rfc9617xml2.original.xml   rfc9617.xml 
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<rfc category="std" docName="draft-ietf-ippm-ioam-yang-13" ipr="trust200902">
<front>
<title abbrev="YANG Model for IOAM">A YANG Data Model for In-Situ
OAM</title>
<author fullname="Tianran Zhou" initials="T." surname="Zhou, Ed."> <!DOCTYPE rfc [
<organization>Huawei</organization> <!ENTITY nbsp "&#160;">
<!ENTITY zwsp "&#8203;">
<!ENTITY nbhy "&#8209;">
<!ENTITY wj "&#8288;">
]>
<rfc xmlns:xi="http://www.w3.org/2001/XInclude" category="std" docName="draft-ie
tf-ippm-ioam-yang-13" number="9617" ipr="trust200902" obsoletes="" updates="" su
bmissionType="IETF" consensus="true" xml:lang="en" tocInclude="true" tocDepth="3
" symRefs="true" sortRefs="true" version="3">
<front>
<title abbrev="YANG Data Model for IOAM">A YANG Data Model for In Situ
Operations, Administration, and Maintenance (IOAM)</title>
<seriesInfo name="RFC" value="9617"/>
<author fullname="Tianran Zhou" initials="T." surname="Zhou" role="editor">
<organization>Huawei</organization>
<address> <address>
<postal> <postal>
<street>156 Beiqing Rd.</street> <street>156 Beiqing Rd.</street>
<city>Beijing</city> <city>Beijing</city>
<code>100095</code> <code>100095</code>
<region/>
<country>China</country> <country>China</country>
</postal> </postal>
<email>zhoutianran@huawei.com</email> <email>zhoutianran@huawei.com</email>
</address> </address>
</author> </author>
<author fullname="Jim Guichard" initials="J." surname="Guichard"> <author fullname="Jim Guichard" initials="J." surname="Guichard">
<organization>Futurewei</organization> <organization>Futurewei</organization>
<address> <address>
<postal> <postal>
<street/>
<city/>
<code/>
<region/>
<country>United States of America</country> <country>United States of America</country>
</postal> </postal>
<email>james.n.guichard@futurewei.com</email> <email>james.n.guichard@futurewei.com</email>
</address> </address>
</author> </author>
<author fullname="Frank Brockners" initials="F." surname="Brockners"> <author fullname="Frank Brockners" initials="F." surname="Brockners">
<organization>Cisco Systems</organization> <organization>Cisco Systems</organization>
<address> <address>
<postal> <postal>
<street>Hansaallee 249, 3rd Floor</street> <street>Hansaallee 249, 3rd Floor</street>
<city>Düsseldorf, Nordrhein-Westfalen</city>
<city>Duesseldorf</city>
<region>Nordrhein-Westfalen</region>
<code>40549</code> <code>40549</code>
<country>Germany</country> <country>Germany</country>
</postal> </postal>
<phone/>
<facsimile/>
<email>fbrockne@cisco.com</email> <email>fbrockne@cisco.com</email>
<uri/>
</address> </address>
</author> </author>
<author fullname="Srihari Raghavan" initials="S." surname="Raghavan"> <author fullname="Srihari Raghavan" initials="S." surname="Raghavan">
<organization>Cisco Systems</organization> <organization>Cisco Systems</organization>
<address> <address>
<postal> <postal>
<street>Tril Infopark Sez, Ramanujan IT City</street> <street>Tril Infopark Sez, Ramanujan IT City</street>
<street>Neville Block, 2nd floor, Old Mahabalipuram Road</street> <street>Neville Block, 2nd floor, Old Mahabalipuram Road</street>
<city>Chennai</city> <city>Chennai</city>
<region>Tamil Nadu</region> <region>Tamil Nadu</region>
<code>600113</code> <code>600113</code>
<country>India</country> <country>India</country>
</postal> </postal>
<phone/>
<facsimile/>
<email>srihari@cisco.com</email> <email>srihari@cisco.com</email>
<uri/>
</address> </address>
</author> </author>
<date month="August" year="2024"/>
<area>OPS</area>
<workgroup>ippm</workgroup>
<date day="01" month="March" year="2024"/> <keyword>OAM</keyword>
<keyword>Configuration</keyword>
<workgroup>IPPM</workgroup>
<abstract> <abstract>
<t>In-situ Operations, Administration, and Maintenance (IOAM) is an <t>In situ Operations, Administration, and Maintenance (IOAM) is an
example of an on-path hybrid measurement method. IOAM defines a method example of an on-path hybrid measurement method. IOAM defines a method
to produce operational and telemetry information that may be exported for producing operational and telemetry information that may be exported
using the in-band or out-of-band method. RFC9197 and RFC9326 discuss the using the in-band or out-of-band method. RFCs 9197 and 9326 discuss the
data fields and associated data types for IOAM. This document defines a data fields and associated data types for IOAM. This document defines a
YANG module for the configuration of IOAM functions.</t> YANG module for the configuration of IOAM functions.</t>
</abstract> </abstract>
</front> </front>
<middle> <middle>
<section title="Introduction"> <section numbered="true" toc="default">
<t>In-situ Operations, Administration, and Maintenance (IOAM) is an <name>Introduction</name>
<t>In situ Operations, Administration, and Maintenance (IOAM) is an
example of an on-path hybrid measurement method. IOAM defines a method example of an on-path hybrid measurement method. IOAM defines a method
to produce operational and telemetry information that may be exported for producing operational and telemetry information that may be exported
using the in-band or out-of-band method. The data types and data formats using the in-band or out-of-band method. The data types and data formats
for IOAM data records have been defined in <xref target="RFC9197"/> and for IOAM data records have been defined in <xref target="RFC9197" format="
<xref target="RFC9326"/>. The IOAM data can be embedded in many protocol default"/> and
encapsulations such as Network Services Header (NSH) and IPv6.</t> <xref target="RFC9326" format="default"/>. The IOAM data can be embedded i
n many protocol
encapsulations, such as the Network Service Header (NSH) <xref target="RFC
9452"/> and IPv6.</t>
<t>This document defines a data model for the configuration of IOAM <t>This document defines a data model for the configuration of IOAM
capabilities using the <xref target="RFC7950">YANG data modeling capabilities using the <xref target="RFC7950" format="default">YANG data m
language</xref>. This YANG model supports five IOAM options, which odeling
are:</t> language</xref>. This YANG data model supports five IOAM options, which
are as follows:</t>
<t><list style="symbols"> <ul spacing="normal">
<t><xref target="RFC9197">Incremental Tracing Option </xref></t> <li>
<t><xref target="RFC9197" format="default">Incremental Trace-Option </
<t><xref target="RFC9197">Pre-allocated Tracing Option</xref></t> xref></t>
</li>
<t><xref target="RFC9326">Direct Export Option</xref></t> <li>
<t><xref target="RFC9197" format="default">Pre-allocated Trace-Option<
<t><xref target="RFC9197">Proof of Transit (PoT) Option</xref></t> /xref></t>
</li>
<t><xref target="RFC9197">Edge-to-Edge Option</xref></t> <li>
</list></t> <t><xref target="RFC9326" format="default">Direct Export Option</xref>
</t>
</li>
<li>
<t><xref target="RFC9197" format="default">Proof of Transit (POT) Opti
on</xref></t>
</li>
<li>
<t><xref target="RFC9197" format="default">Edge-to-Edge Option</xref><
/t>
</li>
</ul>
</section> </section>
<section numbered="true" toc="default">
<section title="Conventions used in this document"> <name>Conventions Used in This Document</name>
<t>The keywords "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", <t>The key words "<bcp14>MUST</bcp14>", "<bcp14>MUST NOT</bcp14>",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "<bcp14>REQUIRED</bcp14>", "<bcp14>SHALL</bcp14>",
"OPTIONAL" in this document are to be interpreted as described in BCP14, "<bcp14>SHALL NOT</bcp14>", "<bcp14>SHOULD</bcp14>",
<xref target="RFC2119"/>, <xref target="RFC8174"/> when, and only when, "<bcp14>SHOULD NOT</bcp14>",
they appear in all capitals, as shown here.</t> "<bcp14>RECOMMENDED</bcp14>", "<bcp14>NOT RECOMMENDED</bcp14>",
"<bcp14>MAY</bcp14>", and "<bcp14>OPTIONAL</bcp14>" in this document
<t>The following terms are defined in <xref target="RFC7950"/> and are are to be interpreted as described in BCP&nbsp;14
used in this specification: <list style="symbols"> <xref target="RFC2119"/> <xref target="RFC8174"/> when, and only
when, they appear in all capitals, as shown here.</t>
<t>The following terms are defined in <xref target="RFC7950" format="defau
lt"/> and are
used in this specification: </t>
<ul spacing="normal">
<li>
<t>augment</t> <t>augment</t>
</li>
<li>
<t>data model</t> <t>data model</t>
</li>
<li>
<t>data node</t> <t>data node</t>
</list>The terminology for describing YANG data models is found in </li>
<xref target="RFC7950"/>.</t> </ul>
<t>The terminology for describing YANG data models is found in
<section anchor="tree-diagrams" title="Tree Diagrams"> <xref target="RFC7950" format="default"/>.</t>
<section anchor="tree-diagrams" numbered="true" toc="default">
<name>Tree Diagrams</name>
<t>Tree diagrams used in this document follow the notation defined in <t>Tree diagrams used in this document follow the notation defined in
<xref target="RFC8340"/>.</t> <xref target="RFC8340" format="default"/>.</t>
</section> </section>
</section> </section>
<section numbered="true" toc="default">
<section title="Design of the IOAM YANG Data Model"> <name>Design of the IOAM YANG Data Model</name>
<t/> <section numbered="true" toc="default">
<name>Overview</name>
<section title="Overview"> <t>The IOAM model is organized as a list of profiles, as shown in the
<t>The IOAM model is organized as list of profiles as shown in the
following figure. Each profile associates with one flow and the following figure. Each profile associates with one flow and the
corresponding IOAM information.</t> corresponding IOAM information.</t>
<sourcecode type="yangtree"><![CDATA[module: ietf-ioam
<t><figure> +--rw ioam
<artwork><![CDATA[module: ietf-ioam +--ro info
+--rw ioam | +--ro timestamp-type? identityref
+--ro info | +--ro available-interface* [if-name]
| +--ro timestamp-type? identityref | +--ro if-name if:interface-ref
| +--ro available-interface* [if-name] +--rw admin-config
| +--ro if-name if:interface-ref | +--rw enabled? boolean
+--rw admin-config +--rw profiles
| +--rw enabled? boolean +--rw profile* [profile-name]
+--rw profiles +--rw profile-name string
+--rw profile* [profile-name] +--rw filter
+--rw profile-name string | +--rw filter-type? ioam-filter-type
+--rw filter | +--rw ace-name? -> /acl:acls/acl/aces/ace/name
| +--rw filter-type? ioam-filter-type +--rw protocol-type? ioam-protocol-type
| +--rw ace-name? -> /acl:acls/acl/aces/ace/name +--rw incremental-tracing-profile {incremental-trace}?
+--rw protocol-type? ioam-protocol-type | ...
+--rw incremental-tracing-profile {incremental-trace}? +--rw preallocated-tracing-profile {preallocated-trace}?
| ... | ...
+--rw preallocated-tracing-profile {preallocated-trace}? +--rw direct-export-profile {direct-export}?
| ... | ...
+--rw direct-export-profile {direct-export}? +--rw pot-profile {proof-of-transit}?
| ... | ...
+--rw pot-profile {proof-of-transit}? +--rw e2e-profile {edge-to-edge}?
| ... ]]></sourcecode>
+--rw e2e-profile {edge-to-edge}? <t>The "info" parameter is a container for all the read-only information
...]]></artwork> that
</figure></t>
<t>The "info" is a container for all the read-only information that
assists monitoring systems in the interpretation of the IOAM data.</t> assists monitoring systems in the interpretation of the IOAM data.</t>
<t>The "enabled" parameter is an administrative configuration. When it i
<t>The "enabled" is an administrative configuration. When it is set to s set to
true, IOAM configuration is enabled for the system. Meanwhile, the "true", IOAM configuration is enabled for the system. Meanwhile, the
IOAM data-plane functionality is enabled.</t> IOAM data plane functionality is enabled.</t>
<t>The "filter" parameter is used to identify a flow, where the IOAM pro
<t>The "filter" is used to identify a flow, where the IOAM profile can file can
apply. There may be multiple filter types. <xref apply. There may be multiple filter types. <xref target="RFC8519" format
target="RFC8519">ACL</xref> is a common way to specify a flow. Each ="default">Access Control Lists (ACLs)</xref> provide a common way to specify a
IOAM profile can associate with an ACE(Access Control Entry). IOAM flow. Each
actions MUST be driven by the accepted packets, when the matched ACE IOAM profile can associate with an ACE (Access Control Entry). When the
"forwarding" action is "accept".</t> matched ACE "forwarding" action is "accept", IOAM actions <bcp14>MUST</bcp14> be
driven by the accepted packets.</t>
<t>The IOAM data can be encapsulated into multiple protocols, e.g., <t>The IOAM data can be encapsulated into multiple protocols, e.g.,
<xref target="RFC9486">IPv6</xref> and <xref <xref target="RFC9486" format="default">IPv6</xref> and <xref target="RF
target="RFC9452">NSH</xref>. The "protocol-type" is used to indicate C9452" format="default">the NSH</xref>. The "protocol-type" parameter is used to
where the IOAM is applied. For example, if the "protocol-type" is indicate
IPv6, the IOAM ingress node will encapsulate the associated flow with where IOAM is applied. For example, if "protocol-type" is set to
the <xref target="RFC9486">IPv6-IOAM</xref> format.</t> "ipv6", the IOAM ingress node will encapsulate the associated flow
according to <xref target="RFC9486" format="default"/>.</t>
<t>In this document, IOAM data includes five encapsulation types, <t>In this document, IOAM data includes five encapsulation types,
i.e., incremental tracing data, preallocated tracing data, direct i.e., incremental tracing data, pre-allocated tracing data, direct
export data, proof of transit data and end to end data. In practice, export data, proof of transit data, and end-to-end data. In practice,
multiple IOAM data types can be encapsulated into the same IOAM multiple IOAM data types can be encapsulated into the same IOAM
header. The "profile" contains a set of sub-profiles, each of which header. The "profile" parameter contains a set of sub-profiles, each of which
relates to one encapsulation type. The configured object may not relates to one encapsulation type. The configured object may not
support all the sub-profiles. The supported sub-profiles are indicated support all the sub-profiles. The supported sub-profiles are indicated
by 5 defined features, i.e., "incremental-trace", by five defined features, i.e., "incremental-trace",
"preallocated-trace", "direct-export", "proof-of-transit" and "preallocated-trace", "direct-export", "proof-of-transit", and
"edge-to-edge".</t> "edge-to-edge".</t>
<t>This document uses the <xref target="RFC8519" format="default">"ietf-
<t>This document uses the <xref target="RFC8519">Access Control List access-control-list" YANG module</xref>, the <xref target="RFC8343" format="defa
YANG module</xref>, the <xref target="RFC8343">Interfaces YANG ult">"ietf-interfaces" YANG
module</xref> and the <xref target="RFC8532">LIME Time Types YANG module</xref>, and the <xref target="RFC8532" format="default">"ietf-lim
module</xref>.</t> e-time-types" YANG module</xref>.</t>
<t>The YANG data model in this document conforms to the Network
<t>The YANG data model in this document conform to the Network Management Datastore Architecture (NMDA) defined in <xref target="RFC834
Management Datastore Architecture (NMDA) defined in <xref 2" format="default"/>.</t>
target="RFC8342"/>.</t>
</section> </section>
<section numbered="true" toc="default" anchor="prealloc-tracing">
<section title="Preallocated Tracing Profile"> <name>Pre-allocated Tracing Profile</name>
<t>The IOAM tracing data is expected to be collected at every node <t>To ensure visibility into the entire path that a packet takes within
that a packet traverses to ensure visibility into the entire path a an IOAM domain, the IOAM tracing data is expected to be collected at every node
packet takes within an IOAM domain. The preallocated tracing option that a packet traverses. The Pre-allocated Trace-Option
will create pre-allocated space for each node to populate its will create pre-allocated space for each node to populate its
information . The "preallocated-tracing-profile" contains the detailed information. The "preallocated-tracing-profile" parameter contains the d
information for the preallocated tracing data. The information etailed
information for the pre-allocated tracing data. This information
includes:</t> includes:</t>
<dl spacing="normal">
<t><list style="symbols"> <dt>node-action:</dt><dd>indicates the operation (e.g., encapsulate th
<t>node-action: indicates the operation (e.g., encapsulate IOAM e IOAM
header, transit the IOAM data, or decapsulate IOAM header) applied header, transit the IOAM data, or decapsulate the IOAM header) appli
to the dedicated flow.</t> ed
to the dedicated flow.</dd>
<t>use-namespace: indicates the namespace used for the trace <dt>use-namespace:</dt><dd>indicates the namespace used for the trace
types.</t> types.</dd>
<dt>trace-type:</dt><dd>indicates the per-hop data to be captured by
<t>trace-type: indicates the per-hop data to be captured by the IOAM-enabled nodes and included in the node data list.</dd>
IOAM enabled nodes and included in the node data list.</t> <dt>max-length:</dt><dd>specifies the maximum length of the node data
list
<t>max-length: specifies the maximum length of the node data list in octets. &nbsp;"max-length" is only defined at the encapsulation
in octets. The max-length is only defined at the encapsulation node.</dd>
node.</t> </dl>
</list><figure align="center"> <sourcecode type="yangtree"><![CDATA[+--rw preallocated-tracing-profile
<artwork><![CDATA[+--rw preallocated-tracing-profile {preallocated-t {preallocated-trace}?
race}?
+--rw node-action? ioam-node-action +--rw node-action? ioam-node-action
+--rw trace-types +--rw trace-types
| +--rw use-namespace? ioam-namespace | +--rw use-namespace? ioam-namespace
| +--rw trace-type* ioam-trace-type | +--rw trace-type* ioam-trace-type
+--rw max-length? uint32]]></artwork> +--rw max-length? uint32
</figure></t> ]]></sourcecode>
</section> </section>
<section numbered="true" toc="default">
<section title="Incremental Tracing Profile"> <name>Incremental Tracing Profile</name>
<t>The incremental tracing option contains a variable node data fields <t>The Incremental Trace-Option contains a variable-length list of node
data fields,
where each node allocates and pushes its node data immediately where each node allocates and pushes its node data immediately
following the option header. The "incremental-tracing-profile" following the option header. The "incremental-tracing-profile" parameter
contains the detailed information for the incremental tracing data. contains the detailed information for the incremental tracing data.
The detailed information is the same as the Preallocated Tracing This information is the same as that for the Pre-allocated Tracing
Profile.</t> Profile; see <xref target="prealloc-tracing"/>.</t>
<sourcecode type="yangtree"><![CDATA[+--rw incremental-tracing-profile {
<t><figure align="center"> incremental-trace}?
<artwork><![CDATA[+--rw incremental-tracing-profile {incremental-tra
ce}?
+--rw node-action? ioam-node-action +--rw node-action? ioam-node-action
+--rw trace-types +--rw trace-types
| +--rw use-namespace? ioam-namespace | +--rw use-namespace? ioam-namespace
| +--rw trace-type* ioam-trace-type | +--rw trace-type* ioam-trace-type
+--rw max-length? uint32]]></artwork> +--rw max-length? uint32
</figure></t> ]]></sourcecode>
</section> </section>
<section numbered="true" toc="default">
<section title="Direct Export Profile"> <name>Direct Export Profile</name>
<t>The direct export option is used as a trigger for IOAM data to be <t>The Direct Export Option is used as a trigger for IOAM data to be
directly exported or locally aggregated without being pushed into directly exported or locally aggregated without being pushed into
in-flight data packets. The "direct-export-profile" contains the in-flight data packets. The "direct-export-profile" parameter contains t
detailed information for the direct export data. The detailed he
information is the same as the Preallocated Tracing Profile, but with detailed information for the direct export data. This
information is the same as that for the Pre-allocated Tracing Profile (<
xref target="prealloc-tracing"/>), but with
two more optional variables:</t> two more optional variables:</t>
<dl spacing="normal">
<t><list style="symbols"> <dt>flow-id:</dt><dd>used to correlate the exported data of the same
<t>flow-id: is used to correlate the exported data of the same flow from multiple nodes and from multiple packets.</dd>
flow from multiple nodes and from multiple packets.</t> <dt>enable-sequence-number:</dt><dd>indicates whether the sequence num
ber
<t>enable-sequence-number: indicates whether the sequence number is used in the Direct Export Option.</dd>
is used in the direct export option.</t> </dl>
</list><figure> <sourcecode type="yangtree"><![CDATA[+--rw direct-export-profile {direct
<artwork><![CDATA[+--rw direct-export-profile {direct-export}? -export}?
+--rw node-action? ioam-node-action +--rw node-action? ioam-node-action
+--rw trace-types +--rw trace-types
| +--rw use-namespace? ioam-namespace | +--rw use-namespace? ioam-namespace
| +--rw trace-type* ioam-trace-type | +--rw trace-type* ioam-trace-type
+--rw flow-id? uint32 +--rw flow-id? uint32
+--rw enable-sequence-number? boolean]]></artwork> +--rw enable-sequence-number? boolean
</figure></t> ]]></sourcecode>
</section> </section>
<section numbered="true" toc="default">
<section title="Proof of Transit Profile"> <name>Proof of Transit Profile</name>
<t>The IOAM Proof of Transit data is to support the path or service <t>The IOAM proof of transit data is used to support the path or service
function chain verification use cases. The "pot-profile" is intended function chain verification use cases. The "pot-profile" parameter is in
to contain the detailed information for the proof of transit data. tended
"use-namespace" indicates the namespace used for the POT types. to contain the detailed information for the proof of transit data. The
"pot-type" indicates a particular POT variant that specifies the POT "use-namespace" parameter indicates the namespace used for the POT types
data that is included. There may be several POT types, which have .
different configuration data. To align with <xref target="RFC9197"/>, The "pot-type" parameter indicates a particular POT variant that specifi
this document only defines IOAM POT type 0. User need to augment this es the POT
module for the configuration of a specifc POT type.</t> data that is included. There may be several POT types, each having
different configuration data. To align with <xref target="RFC9197" forma
<t><figure align="center"> t="default"/>,
<artwork><![CDATA[+--rw pot-profile {proof-of-transit}? this document only defines IOAM POT type 0. Users need to augment this
module for the configuration of a specific POT type.</t>
<sourcecode type="yangtree"><![CDATA[+--rw pot-profile {proof-of-transit
}?
+--rw use-namespace? ioam-namespace +--rw use-namespace? ioam-namespace
+--rw pot-type? ioam-pot-type]]></artwork> +--rw pot-type? ioam-pot-type
</figure></t> ]]></sourcecode>
</section> </section>
<section numbered="true" toc="default">
<section title="Edge-to-Edge Profile"> <name>Edge-to-Edge Profile</name>
<t>The IOAM edge-to-edge option is to carry data that is added by the <t>The IOAM Edge-to-Edge Option is used to carry data that is added by t
IOAM encapsulating node and interpreted by IOAM decapsulating node. he
The "e2e-profile" contains the detailed information for the IOAM encapsulating node and interpreted by the IOAM decapsulating node.
edge-to-edge data. The detailed information includes:</t> The "e2e-profile" parameter contains the detailed information for the
edge-to-edge data. This information includes:</t>
<t><list style="symbols"> <dl spacing="normal">
<t>node-action is the same semantic as in Section 3.2.</t> <dt>node-action:</dt><dd>the same semantic as that provided in <xref t
arget="prealloc-tracing"/>.</dd>
<t>use-namespace: indicate the namespace used for the edge-to-edge <dt>use-namespace:</dt><dd>indicates the namespace used for the edge-t
types.</t> o-edge
types.</dd>
<t>e2e-type: indicates data to be carried from the ingress IOAM <dt>e2e-type:</dt><dd>indicates data to be carried from the ingress IO
node to the egress IOAM node.</t> AM
</list><figure align="center"> node to the egress IOAM node.</dd>
<artwork><![CDATA[+--rw e2e-profile {edge-to-edge}? </dl>
<sourcecode type="yangtree"><![CDATA[+--rw e2e-profile {edge-to-edge}?
+--rw node-action? ioam-node-action +--rw node-action? ioam-node-action
+--rw e2e-types +--rw e2e-types
+--rw use-namespace? ioam-namespace +--rw use-namespace? ioam-namespace
+--rw e2e-type* ioam-e2e-type]]></artwork> +--rw e2e-type* ioam-e2e-type
</figure></t> ]]></sourcecode>
</section> </section>
</section> </section>
<section numbered="true" toc="default">
<name>IOAM YANG Module</name>
<section title="IOAM YANG Module"> <t>The "ietf-ioam" module defined in this document imports typedefs from <xref
<t/> target="RFC8519"/>, <xref target="RFC8343"/>, and <xref target="RFC8532"/>. Thi
s document also references <xref target="RFC9197"/>, <xref target="RFC9326"/>, <
<t><figure> xref target="RFC9486"/>, and <xref target="RFC9452"/>.</t>
<artwork><![CDATA[<CODE BEGINS> file "ietf-ioam@2024-03-01.yang" <sourcecode name="ietf-ioam@2024-07-12.yang" type="yang" markers="true"><!
[CDATA[
module ietf-ioam { module ietf-ioam {
yang-version 1.1; yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-ioam"; namespace "urn:ietf:params:xml:ns:yang:ietf-ioam";
prefix "ioam"; prefix ioam;
import ietf-access-control-list { import ietf-access-control-list {
prefix "acl"; prefix acl;
reference reference
"RFC 8519: YANG Data Model for Network Access Control "RFC 8519: YANG Data Model for Network Access Control
Lists (ACLs)"; Lists (ACLs)";
} }
import ietf-interfaces { import ietf-interfaces {
prefix "if"; prefix if;
reference reference
"RFC 8343: A YANG Data Model for Interface Management"; "RFC 8343: A YANG Data Model for Interface Management";
} }
import ietf-lime-time-types { import ietf-lime-time-types {
prefix "lime"; prefix lime;
reference reference
"RFC 8532: Generic YANG Data Model for the Management of "RFC 8532: Generic YANG Data Model for the Management of
Operations, Administration, and Maintenance (OAM) Protocols Operations, Administration, and Maintenance (OAM) Protocols
That Use Connectionless Communications"; That Use Connectionless Communications";
} }
organization organization
"IETF IPPM (IP Performance Metrics) Working Group"; "IETF IPPM (IP Performance Measurement) Working Group";
contact contact
"WG Web: <https://datatracker.ietf.org/wg/ippm> "WG Web: <https://datatracker.ietf.org/wg/ippm>
WG List: <ippm@ietf.org> WG List: <mailto:ippm@ietf.org>
Editor: zhoutianran@huawei.com Editor: Tianran Zhou
Editor: james.n.guichard@futurewei.com <mailto:zhoutianran@huawei.com>
Editor: fbrockne@cisco.com Author: Jim Guichard
Editor: srihari@cisco.com"; <mailto:james.n.guichard@futurewei.com>
Author: Frank Brockners
<mailto:fbrockne@cisco.com>
Author: Srihari Raghavan
<mailto:srihari@cisco.com>";
description description
"This YANG module specifies a vendor-independent data "This YANG module specifies a vendor-independent data model
model for the In Situ OAM (IOAM). for In Situ Operations, Administration, and Maintenance
(IOAM).
The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL', 'SHALL The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL', 'SHALL
NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED', 'NOT RECOMMENDED', NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED', 'NOT RECOMMENDED',
'MAY', and 'OPTIONAL' in this document are to be interpreted as 'MAY', and 'OPTIONAL' in this document are to be interpreted as
described in BCP 14 (RFC 2119) (RFC 8174) when, and only when, described in BCP 14 (RFC 2119) (RFC 8174) when, and only when,
they appear in all capitals, as shown here. they appear in all capitals, as shown here.
Copyright (c) 2024 IETF Trust and the persons identified as Copyright (c) 2024 IETF Trust and the persons identified as
authors of the code. All rights reserved. authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject to without modification, is permitted pursuant to, and subject to
the license terms contained in, the Revised BSD License set the license terms contained in, the Revised BSD License set
forth in Section 4.c of the IETF Trust's Legal Provisions forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents Relating to IETF Documents
(https://trustee.ietf.org/license-info). (https://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC XXXX This version of this YANG module is part of RFC 9617; see the
(https://www.rfc-editor.org/info/rfcXXXX); see the RFC itself RFC itself for full legal notices.";
for full legal notices.";
revision 2024-03-01 { revision 2024-07-12 {
description "Initial revision."; description
reference "RFC XXXX: A YANG Data Model for In-Situ OAM"; "Initial revision.";
reference
"RFC 9617: A YANG Data Model for In Situ Operations,
Administration, and Maintenance (IOAM)";
} }
/* /*
* FEATURES * FEATURES
*/ */
feature incremental-trace feature incremental-trace {
{
description description
"This feature indicated that the incremental tracing option is "This feature indicates that the Incremental Trace-Option is
supported."; supported.";
reference "RFC 9197: Data Fields for In-situ OAM"; reference
"RFC 9197: Data Fields for In Situ Operations,
Administration, and Maintenance (IOAM)";
} }
feature preallocated-trace feature preallocated-trace {
{
description description
"This feature indicated that the preallocated tracing option is "This feature indicates that the Pre-allocated Trace-Option
supported."; is supported.";
reference "RFC 9197: Data Fields for In-situ OAM"; reference
"RFC 9197: Data Fields for In Situ Operations,
Administration, and Maintenance (IOAM)";
} }
feature direct-export feature direct-export {
{
description description
"This feature indicated that the direct export option is "This feature indicates that the Direct Export Option is
supported."; supported.";
reference "RFC 9326: In-situ OAM Direct Exporting"; reference
"RFC 9326: In Situ Operations, Administration, and
Maintenance (IOAM) Direct Exporting";
} }
feature proof-of-transit feature proof-of-transit {
{
description description
"This feature indicated that the proof of transit option is "This feature indicates that the Proof of Transit Option is
supported"; supported.";
reference "RFC 9197: Data Fields for In-situ OAM"; reference
"RFC 9197: Data Fields for In Situ Operations,
Administration, and Maintenance (IOAM)";
} }
feature edge-to-edge feature edge-to-edge {
{
description description
"This feature indicated that the edge-to-edge option is "This feature indicates that the Edge-to-Edge Option is
supported."; supported.";
reference "RFC 9197: Data Fields for In-situ OAM"; reference
"RFC 9197: Data Fields for In Situ Operations,
Administration, and Maintenance (IOAM)";
} }
/* /*
* IDENTITIES * IDENTITIES
*/ */
identity filter { identity filter {
description description
"Base identity to represent a filter. A filter is used to "Base identity to represent a filter. A filter is used to
specify the flow to apply the IOAM profile. "; specify the flow to apply the IOAM profile.";
} }
identity acl-filter { identity acl-filter {
base filter; base filter;
description description
"Apply ACL rules to specify the flow."; "Apply Access Control List (ACL) rules to specify the
flow.";
} }
identity protocol { identity protocol {
description description
"Base identity to represent the carrier protocol. It's used to "Base identity to represent the carrier protocol. It is
indicate what layer and protocol the IOAM data is embedded."; used to indicate in what layer and protocol the IOAM data
is embedded.";
} }
identity ipv6 { identity ipv6 {
base protocol; base protocol;
description description
"The described IOAM data is embedded in IPv6 protocol."; "The described IOAM data is embedded in IPv6.";
reference reference
"RFC 9486: In-situ OAM IPv6 Options"; "RFC 9486: IPv6 Options for In Situ Operations,
Administration, and Maintenance (IOAM)";
} }
identity nsh { identity nsh {
base protocol; base protocol;
description description
"The described IOAM data is embedded in NSH."; "The described IOAM data is embedded in the Network Service
Header (NSH).";
reference reference
"RFC 9452: Network Service Header (NSH) "RFC 9452: Network Service Header (NSH) Encapsulation for
Encapsulation for In-situ OAM (IOAM) Data"; In Situ OAM (IOAM) Data";
} }
identity node-action { identity node-action {
description description
"Base identity to represent the node actions. It's used to "Base identity to represent the node actions. It is used to
indicate what action the node will take."; indicate what action the node will take.";
} }
identity action-encapsulate { identity action-encapsulate {
base node-action; base node-action;
description description
"It indicates the node is to encapsulate the IOAM packet"; "This identity indicates that the node is used to
encapsulate the IOAM packet.";
} }
identity action-decapsulate { identity action-decapsulate {
base node-action; base node-action;
description description
"It indicates the node is to decapsulate the IOAM packet"; "This identity indicates that the node is used to
decapsulate the IOAM packet.";
} }
identity action-transit { identity action-transit {
base node-action; base node-action;
description description
"It indicates the node is to transit the IOAM packet"; "This identity indicates that the node is used to transit
the IOAM packet.";
} }
identity trace-type { identity trace-type {
description description
"Base identity to represent trace types."; "Base identity to represent trace types.";
} }
identity trace-hop-lim-node-id { identity trace-hop-lim-node-id {
base trace-type; base trace-type;
description description
"It indicates the presence of Hop_Lim and node_id in the "This identity indicates the presence of 'Hop_Lim' and
node data."; 'node_id' in the node data.";
reference
"RFC 9197: Data Fields for In Situ Operations,
Administration, and Maintenance (IOAM)";
} }
identity trace-if-id { identity trace-if-id {
base trace-type; base trace-type;
description description
"It indicates presence of ingress_if_id and egress_if_id "This identity indicates the presence of 'ingress_if_id' and
(short format) in the node data."; 'egress_if_id' (short format) in the node data.";
reference
"RFC 9197: Data Fields for In Situ Operations,
Administration, and Maintenance (IOAM)";
} }
identity trace-timestamp-seconds { identity trace-timestamp-seconds {
base trace-type; base trace-type;
description description
"It indicates presence of timestamp seconds in the node data."; "This identity indicates the presence of timestamp seconds
in the node data.";
} }
identity trace-timestamp-fraction { identity trace-timestamp-fraction {
base trace-type; base trace-type;
description description
"It indicates presence of timestamp fraction in the node "This identity indicates the presence of a timestamp
data."; fraction in the node data.";
} }
identity trace-transit-delay { identity trace-transit-delay {
base trace-type; base trace-type;
description description
"It indicates presence of transit delay in the node data."; "This identity indicates the presence of transit delay in
the node data.";
} }
identity trace-namespace-data { identity trace-namespace-data {
base trace-type; base trace-type;
description description
"It indicates presence of name space specific data (short "This identity indicates the presence of namespace-specific
format) in the node data."; data (short format) in the node data.";
} }
identity trace-queue-depth { identity trace-queue-depth {
base trace-type; base trace-type;
description description
"It indicates presence of queue depth in the node data."; "This identity indicates the presence of queue depth in the
node data.";
} }
identity trace-checksum-complement { identity trace-checksum-complement {
base trace-type; base trace-type;
description description
"It indicates presence of the Checksum Complement node data."; "This identity indicates the presence of the Checksum
Complement in the node data.";
reference
"RFC 9197: Data Fields for In Situ Operations,
Administration, and Maintenance (IOAM)";
} }
identity trace-hop-lim-node-id-wide { identity trace-hop-lim-node-id-wide {
base trace-type; base trace-type;
description description
"It indicates presence of Hop_Lim and node_id in wide format "This identity indicates the presence of 'Hop_Lim' and
in the node data."; 'node_id' (wide format) in the node data.";
} }
identity trace-if-id-wide { identity trace-if-id-wide {
base trace-type; base trace-type;
description description
"It indicates presence of ingress_if_id and egress_if_id in "This identity indicates the presence of 'ingress_if_id' and
wide format in the node data."; 'egress_if_id' (wide format) in the node data.";
} }
identity trace-namespace-data-wide { identity trace-namespace-data-wide {
base trace-type; base trace-type;
description description
"It indicates presence of IOAM-Namespace specific data in wide "This identity indicates the presence of
format in the node data."; IOAM-namespace-specific data (wide format) in the
node data.";
} }
identity trace-buffer-occupancy { identity trace-buffer-occupancy {
base trace-type; base trace-type;
description description
"It indicates presence of buffer occupancy in the node data."; "This identity indicates the presence of buffer occupancy
in the node data.";
} }
identity trace-opaque-state-snapshot { identity trace-opaque-state-snapshot {
base trace-type; base trace-type;
description description
"It indicates presence of variable length Opaque State Snapshot "This identity indicates the presence of the variable-length
field."; Opaque State Snapshot field.";
} }
identity pot-type { identity pot-type {
description description
"Base identity to represent Proof of Transit (PoT) types."; "Base identity to represent Proof of Transit (POT) types.";
} }
identity pot-type-0 { identity pot-type-0 {
base pot-type; base pot-type;
description description
"The IOAM POT Type field value is 0, and POT data is a 16 "The IOAM field value for the POT type is 0, and POT data is
Octet field to carry data associated to POT procedures."; a 16-octet field to carry data associated with POT
procedures.";
} }
identity e2e-type { identity e2e-type {
description description
"Base identity to represent edge-to-edge types."; "Base identity to represent edge-to-edge types.";
} }
identity e2e-seq-num-64 { identity e2e-seq-num-64 {
base e2e-type; base e2e-type;
description description
"It indicates presence of a 64-bit sequence number."; "This identity indicates the presence of a 64-bit
sequence number.";
} }
identity e2e-seq-num-32 { identity e2e-seq-num-32 {
base e2e-type; base e2e-type;
description description
"It indicates the presence of a 32-bit sequence number."; "This identity indicates the presence of a 32-bit
sequence number.";
} }
identity e2e-timestamp-seconds { identity e2e-timestamp-seconds {
base e2e-type; base e2e-type;
description description
"It indicates the presence of timestamp seconds representing "This identity indicates the presence of timestamp seconds
the time at which the packet entered the IOAM-domain."; representing the time at which the packet entered the
IOAM domain.";
} }
identity e2e-timestamp-fraction { identity e2e-timestamp-fraction {
base e2e-type; base e2e-type;
description description
"It indicates the presence of timestamp fraction representing "This identity indicates the presence of a timestamp
the time at which the packet entered the IOAM-domain."; fraction representing the time at which the packet entered
the IOAM domain.";
} }
identity namespace { identity namespace {
description description
"Base identity to represent the Namespace-ID."; "Base identity to represent the Namespace-ID.";
} }
identity default-namespace { identity default-namespace {
base namespace; base namespace;
description description
"The Namespace-ID value of 0x0000 is defined as the "The Namespace-ID value of 0x0000 is defined as the
Default-Namespace-ID and MUST be known to all the nodes Default-Namespace-ID and MUST be known to all the nodes
implementing IOAM."; implementing IOAM.";
} }
/* /*
* TYPE DEFINITIONS * TYPE DEFINITIONS
*/ */
typedef ioam-filter-type { typedef ioam-filter-type {
type identityref { type identityref {
base filter; base filter;
} }
description description
"It specifies a known type of filter."; "This type specifies a known type of filter.";
} }
typedef ioam-protocol-type { typedef ioam-protocol-type {
type identityref { type identityref {
base protocol; base protocol;
} }
description description
"It specifies a known type of carrier protocol for the IOAM "This type specifies a known type of carrier protocol for
data."; the IOAM data.";
} }
typedef ioam-node-action { typedef ioam-node-action {
type identityref { type identityref {
base node-action; base node-action;
} }
description description
"It specifies a known type of node action."; "This type specifies a known type of node action.";
} }
typedef ioam-trace-type { typedef ioam-trace-type {
type identityref { type identityref {
base trace-type; base trace-type;
} }
description description
"It specifies a known trace type."; "This type specifies a known trace type.";
} }
typedef ioam-pot-type { typedef ioam-pot-type {
type identityref { type identityref {
base pot-type; base pot-type;
} }
description description
"It specifies a known pot type."; "This type specifies a known POT type.";
} }
typedef ioam-e2e-type { typedef ioam-e2e-type {
type identityref { type identityref {
base e2e-type; base e2e-type;
} }
description description
"It specifies a known edge-to-edge type."; "This type specifies a known edge-to-edge type.";
} }
typedef ioam-namespace { typedef ioam-namespace {
type identityref { type identityref {
base namespace; base namespace;
} }
description description
"It specifies the supported namespace."; "This type specifies the supported namespace.";
} }
/* /*
* GROUP DEFINITIONS * GROUP DEFINITIONS
*/ */
grouping ioam-filter { grouping ioam-filter {
description "A grouping for IOAM filter definition"; description
"A grouping for IOAM filter definitions.";
leaf filter-type { leaf filter-type {
type ioam-filter-type; type ioam-filter-type;
description "filter type"; description
"Filter type.";
} }
leaf ace-name { leaf ace-name {
when "derived-from-or-self(../filter-type, 'ioam:acl-filter')"; when "derived-from-or-self(../filter-type, 'ioam:acl-filter')";
type leafref { type leafref {
path "/acl:acls/acl:acl/acl:aces/acl:ace/acl:name"; path "/acl:acls/acl:acl/acl:aces/acl:ace/acl:name";
} }
description "The Access Control Entry name is used to description
refer to an ACL specification."; "The Access Control Entry name is used to refer to an ACL
specification.";
} }
} }
grouping encap-tracing { grouping encap-tracing {
description description
"A grouping for the generic configuration for "A grouping for the generic configuration for the
tracing profile."; tracing profile.";
container trace-types { container trace-types {
description description
"It indicates the list of trace types for encapsulation."; "This container provides the list of trace types for
encapsulation.";
leaf use-namespace { leaf use-namespace {
type ioam-namespace; type ioam-namespace;
default default-namespace; default "default-namespace";
description description
"It indicates the name space used for encapsulation."; "This object indicates the namespace used for
encapsulation.";
} }
leaf-list trace-type { leaf-list trace-type {
type ioam-trace-type; type ioam-trace-type;
description description
"The trace type is only defined at the encapsulation "The trace type is only defined at the encapsulation
node."; node.";
} }
} }
leaf max-length { leaf max-length {
when "derived-from-or-self(../node-action, when "derived-from-or-self(../node-action,
'ioam:action-encapsulate')"; 'ioam:action-encapsulate')";
type uint32; type uint32;
units bytes; units "bytes";
description description
"This field specifies the maximum length of the node data "This field specifies the maximum length of the node data
list in octets. The max-length is only defined at the list in octets. 'max-length' is only defined at the
encapsulation node."; encapsulation node.";
} }
} }
grouping ioam-incremental-tracing-profile { grouping ioam-incremental-tracing-profile {
description description
"A grouping for incremental tracing profile."; "A grouping for the Incremental Tracing Profile.";
leaf node-action { leaf node-action {
type ioam-node-action; type ioam-node-action;
default action-transit; default "action-transit";
description description
"This object indicates the action the node need to "This object indicates the action the node needs to
take, e.g. encapsulation."; take, e.g., encapsulation.";
} }
uses encap-tracing { uses encap-tracing {
when "derived-from-or-self(node-action, when "derived-from-or-self(node-action,
'ioam:action-encapsulate')"; 'ioam:action-encapsulate')";
} }
} }
grouping ioam-preallocated-tracing-profile { grouping ioam-preallocated-tracing-profile {
description description
"A grouping for pre-allocated tracing profile."; "A grouping for the Pre-allocated Tracing Profile.";
leaf node-action { leaf node-action {
type ioam-node-action; type ioam-node-action;
default action-transit; default "action-transit";
description description
"This object indicates the action the node need to "This object indicates the action the node needs to
take, e.g. encapsulation."; take, e.g., encapsulation.";
} }
uses encap-tracing { uses encap-tracing {
when "derived-from-or-self(node-action, when "derived-from-or-self(node-action,
'ioam:action-encapsulate')"; 'ioam:action-encapsulate')";
} }
} }
grouping ioam-direct-export-profile { grouping ioam-direct-export-profile {
description description
"A grouping for direct export profile."; "A grouping for the Direct Export Profile.";
leaf node-action { leaf node-action {
type ioam-node-action; type ioam-node-action;
default action-transit; default "action-transit";
description description
"This object indicates the action the node need to "This object indicates the action the node needs to
take, e.g. encapsulation."; take, e.g., encapsulation.";
} }
uses encap-tracing { uses encap-tracing {
when "derived-from-or-self(node-action, when "derived-from-or-self(node-action,
'ioam:action-encapsulate')"; 'ioam:action-encapsulate')";
} }
leaf flow-id { leaf flow-id {
when "derived-from-or-self(../node-action, when "derived-from-or-self(../node-action,
'ioam:action-encapsulate')"; 'ioam:action-encapsulate')";
type uint32; type uint32;
description description
"A 32-bit flow identifier. The field is set at the "A 32-bit flow identifier. The field is set at the
encapsulating node. The Flow ID can be uniformly assigned encapsulating node. The Flow ID can be uniformly
by a central controller or algorithmically generated by the assigned by a central controller or algorithmically
encapsulating node. The latter approach cannot guarantee generated by the encapsulating node. The latter approach
the uniqueness of Flow ID, yet the conflict probability is cannot guarantee the uniqueness of the Flow ID, yet the
small due to the large Flow ID space. flow-id is used to probability of conflict is small due to the large Flow ID
correlate the exported data of the same flow from multiple space. 'flow-id' is used to correlate the exported data
nodes and from multiple packets."; of the same flow from multiple nodes and from multiple
packets.";
} }
leaf enable-sequence-number { leaf enable-sequence-number {
when "derived-from-or-self(../node-action, when "derived-from-or-self(../node-action,
'ioam:action-encapsulate')"; 'ioam:action-encapsulate')";
type boolean; type boolean;
default false; default "false";
description description
"This boolean value indicates whether the sequence number is "This boolean value indicates whether the sequence number
used in the direct export option 32-bit flow identifier. If is used in the Direct Export Option's 32-bit flow
this value is true, the sequence number is used. By default, identifier. If this value is set to 'true', the sequence
it's turned off."; number is used. It is turned off by default.";
} }
} }
grouping ioam-e2e-profile { grouping ioam-e2e-profile {
description description
"A grouping for edge-to-edge profile."; "A grouping for the Edge-to-Edge Profile.";
leaf node-action { leaf node-action {
type ioam-node-action; type ioam-node-action;
default action-transit; default "action-transit";
description description
"This object indicates the action the node need to "This object indicates the action the node needs to
take, e.g. encapsulation."; take, e.g., encapsulation.";
} }
container e2e-types { container e2e-types {
when "derived-from-or-self(../node-action, when "derived-from-or-self(../node-action,
'ioam:action-encapsulate')"; 'ioam:action-encapsulate')";
description description
"It indicates the list of edge-to-edge types for "This container provides the list of edge-to-edge types
encapsulation."; for encapsulation.";
leaf use-namespace { leaf use-namespace {
type ioam-namespace; type ioam-namespace;
default default-namespace; default "default-namespace";
description description
"It indicates the name space used for encapsulation."; "This object indicates the namespace used for
encapsulation.";
} }
leaf-list e2e-type { leaf-list e2e-type {
type ioam-e2e-type; type ioam-e2e-type;
description description
"The edge-to-edge type is only defined at the encapsulation "The edge-to-edge type is only defined at the
node."; encapsulation node.";
} }
} }
} }
grouping ioam-admin-config { grouping ioam-admin-config {
description description
"IOAM top-level administrative configuration."; "IOAM top-level administrative configuration.";
leaf enabled { leaf enabled {
type boolean; type boolean;
default false; default "false";
description description
"This object is to control the availability of configuration. "This object is used to control the availability of
It MUST be true before anything in the configuration. It MUST be set to 'true' before anything
/ioam/profiles/profile subtree can be edited. in the /ioam/profiles/profile subtree can be edited.
If false, any configuration in place is not used."; If 'false', any configuration in place is not used.";
} }
} }
/* /*
* DATA NODES * DATA NODES
*/ */
container ioam { container ioam {
description "IOAM top level container"; description
"IOAM top-level container.";
container info { container info {
config false; config false;
description description
"Describes information such as units or timestamp format that "Describes information, such as units or timestamp format,
assists monitoring systems in the interpretation of the IOAM that assists monitoring systems in the interpretation of
data."; the IOAM data.";
leaf timestamp-type { leaf timestamp-type {
type identityref { type identityref {
base lime:timestamp-type; base lime:timestamp-type;
} }
description description
"Type of timestamp, such as Truncated PTP or NTP."; "Type of timestamp, such as Truncated PTP (Precision
Time Protocol) or NTP.";
} }
list available-interface { list available-interface {
key "if-name"; key "if-name";
description description
"A list of available interfaces that support IOAM."; "A list of available interfaces that support IOAM.";
leaf if-name { leaf if-name {
type if:interface-ref; type if:interface-ref;
description "This is a reference to the Interface name."; description
"This is a reference to the interface name.";
} }
} }
} }
container admin-config { container admin-config {
description description
"Contains all the administrative configurations related to "Contains all the administrative configurations related to
the IOAM functionalities and all the IOAM profiles."; the IOAM functionalities and all the IOAM profiles.";
uses ioam-admin-config; uses ioam-admin-config;
} }
container profiles { container profiles {
description description
"Contains a list of IOAM profiles."; "Contains a list of IOAM profiles.";
list profile { list profile {
key "profile-name"; key "profile-name";
description description
"A list of IOAM profiles that configured on the node. "A list of IOAM profiles that are configured on the
There is no mandatory type of profile (e.g., node. There is no mandatory type of profile (e.g.,
incremental-trace, preallocated-trace.) in the list. 'incremental-trace', 'preallocated-trace') in the list.
But at least one profile should be added."; But at least one profile should be added.";
leaf profile-name { leaf profile-name {
type string{ type string {
length "1..300"; length "1..300";
} }
description description
"Unique identifier for each IOAM profile."; "Unique identifier for each IOAM profile.";
} }
container filter { container filter {
uses ioam-filter; uses ioam-filter;
description description
"The filter which is used to indicate the flow to apply "The filter that is used to indicate the flow to apply
IOAM."; IOAM.";
} }
leaf protocol-type { leaf protocol-type {
type ioam-protocol-type; type ioam-protocol-type;
description description
"This item is used to indicate the carrier protocol where "This object is used to indicate the carrier protocol
the IOAM is applied."; where IOAM is applied.";
} }
container incremental-tracing-profile { container incremental-tracing-profile {
if-feature incremental-trace; if-feature "incremental-trace";
presence "Enables incremental tracing option."; presence "Enables the Incremental Trace-Option.";
description description
"It describes the profile for incremental tracing "This container describes the profile for the
option."; Incremental Trace-Option.";
uses ioam-incremental-tracing-profile; uses ioam-incremental-tracing-profile;
} }
container preallocated-tracing-profile { container preallocated-tracing-profile {
if-feature preallocated-trace; if-feature "preallocated-trace";
presence "Enables preallocated tracing option."; presence "Enables the Pre-allocated Trace-Option.";
description description
"It describes the profile for preallocated tracing "This container describes the profile for the
option."; Pre-allocated Trace-Option.";
uses ioam-preallocated-tracing-profile; uses ioam-preallocated-tracing-profile;
} }
container direct-export-profile { container direct-export-profile {
if-feature direct-export; if-feature "direct-export";
presence "Enables direct-export option."; presence "Enables the Direct Export Option.";
description description
"It describes the profile for direct-export option"; "This container describes the profile for the
Direct Export Option.";
uses ioam-direct-export-profile; uses ioam-direct-export-profile;
} }
container pot-profile { container pot-profile {
if-feature proof-of-transit; if-feature "proof-of-transit";
presence "Enables Proof of Transit option."; presence "Enables the Proof of Transit Option.";
description description
"It describes the profile for PoT option."; "This container describes the profile for the
Proof of Transit Option.";
leaf use-namespace { leaf use-namespace {
type ioam-namespace; type ioam-namespace;
default default-namespace; default "default-namespace";
description description
"It indicates the namespace used for the POT types."; "This object indicates the namespace used for the
POT types.";
} }
leaf pot-type { leaf pot-type {
type ioam-pot-type; type ioam-pot-type;
description description
"The type of a particular POT variant that specifies "The type of a particular POT variant that specifies
the POT data that is included."; the POT data that is included.";
} }
} }
container e2e-profile { container e2e-profile {
if-feature edge-to-edge; if-feature "edge-to-edge";
presence "Enables edge-to-edge option."; presence "Enables the Edge-to-Edge Option.";
description description
"It describes the profile for edge-to-edge option."; "This container describes the profile for the
Edge-to-Edge Option.";
uses ioam-e2e-profile; uses ioam-e2e-profile;
} }
} }
} }
} }
} }
<CODE ENDS>]]></artwork> ]]></sourcecode>
</figure></t>
<t/>
</section> </section>
<section anchor="Security" numbered="true" toc="default">
<section anchor="Security" title="Security Considerations"> <name>Security Considerations</name>
<t>The YANG module specified in this document defines a schema for data <t>The YANG module specified in this document defines a schema for data
that is designed to be accessed via network management protocols such as that is designed to be accessed via network management protocols such
<xref target="RFC6241">NETCONF</xref> or <xref as NETCONF <xref target="RFC6241"/> or RESTCONF <xref target="RFC8040"/>.
target="RFC8040">RESTCONF</xref>. The lowest NETCONF layer is the secure The lowest NETCONF layer is the secure transport layer, and the
transport layer, and the mandatory-to-implement secure transport is mandatory-to-implement secure transport is Secure Shell (SSH)
<xref target="RFC6242">Secure Shell (SSH)</xref>. The lowest RESTCONF <xref target="RFC6242"/>. The lowest RESTCONF layer is HTTPS, and the
layer is HTTPS, and the mandatory-to-implement secure transport is <xref mandatory-to-implement secure transport is TLS <xref target="RFC8446"/>.</t
target="RFC8446">TLS</xref>.</t> >
<t>The Network Configuration Access Control Model (NACM) <xref target=
<t>The <xref target="RFC8341">Network Configuration Access Control Model "RFC8341"/>
(NACM)</xref> provides the means to restrict access for particular provides the means to restrict access for particular NETCONF or RESTCONF us
NETCONF or RESTCONF users to a preconfigured subset of all available ers
NETCONF or RESTCONF protocol operations and content.</t> to a preconfigured subset of all available NETCONF or RESTCONF protocol
operations and content.</t>
<t>There are a number of data nodes defined in this YANG module that are <t>There are a number of data nodes defined in this YANG module that are
writable/creatable/deletable (i.e., config true, which is the default). writable/creatable/deletable (i.e., config true, which is the default). The
These data nodes may be considered sensitive or vulnerable in some se
network environments. Write operations (e.g., edit-config) to these data data nodes may be considered sensitive or vulnerable in some network
nodes without proper protection can have a negative effect on network environments. Write operations (e.g., edit-config) to these data nodes with
operations. These are the subtrees and data nodes and their out
sensitivity/vulnerability:</t> proper protection can have a negative effect on network operations. These a
re
<t><list style="symbols"> the subtrees and data nodes and their sensitivity/vulnerability:</t>
<t>/ioam/admin-config: The items in the container above include the <dl spacing="normal">
top level administrative configurations related to the IOAM <dt>/ioam/admin-config:</dt><dd>The items in the "admin-config" containe
r above include the
top-level administrative configurations related to the IOAM
functionalities and all the IOAM profiles. Unexpected changes to functionalities and all the IOAM profiles. Unexpected changes to
these items could lead to the IOAM function disruption and/or these items could lead to disruption of IOAM functions and/or
misbehavior of all the IOAM profiles.</t> misbehaving IOAM profiles.</dd>
</list></t> <dt>/ioam/profiles/profile:</dt><dd>The entries in the "profile" list ab
ove include the
<t><list style="symbols">
<t>/ioam/profiles/profile: The entries in the list above include the
whole IOAM profile configurations. Unexpected changes to these whole IOAM profile configurations. Unexpected changes to these
entries could lead to the mistake of the IOAM behavior for the entries could lead to incorrect IOAM behavior for the
corresponding flows. Consequently, it will impact the performance corresponding flows. Consequently, such changes would impact performan
monitoring, data analytics, and the associated reaction to network ce
services.</t> monitoring, data analytics, and associated interactions with network
</list></t> services.</dd>
</dl>
<t>Some readable data nodes in these YANG modules may be considered <t>Some of the readable data nodes in this YANG module may be considered
sensitive or vulnerable in some network environments. It is thus sensitive or vulnerable in some network environments. It is thus important
important to control read access (e.g., via get, get-config, or to
notification) to these data nodes. These are the subtrees and data nodes control read access (e.g., via get, get-config, or notification) to these d
and their sensitivity/vulnerability:</t> ata
nodes. These are the subtrees and data nodes and their
<t><list style="symbols"> sensitivity/vulnerability:</t>
<t>/ioam/profiles/profile: The information contained in this subtree <dl spacing="normal">
might give information about the services deployed for the <dt>/ioam/profiles/profile:</dt><dd>The information contained in this su
customers.For instance, a customer might be given access to monitor btree
their services status. In that example, the customer access should might reveal information about the services deployed for
customers. For instance, a customer might be given access to monitor
the status of their services. In this scenario, the customer's access
should
be restricted to nodes representing their services so as not to be restricted to nodes representing their services so as not to
divulge information about the underlying network structure or divulge information about the underlying network structure or
services.</t> services.</dd>
</list></t> </dl>
<t/>
</section>
<section anchor="IANA" title="IANA Considerations">
<t>RFC Ed.: In this section, replace all occurrences of 'XXXX' with the
actual RFC number (and remove this note).</t>
<t>IANA is requested to assign a new URI from the <xref
target="RFC3688">IETF XML Registry</xref>. The following URI is
suggested:</t>
<t><figure>
<artwork align="left"><![CDATA[ URI: urn:ietf:params:xml:ns:yan
g:ietf-ioam
Registrant Contact: The IESG.
XML: N/A; the requested URI is an XML namespace.]]></artwork>
</figure></t>
<t>This document also requests a new YANG module name in the <xref
target="RFC7950">YANG Module Names registry</xref> with the following
suggestion:</t>
<t><figure>
<artwork align="left"><![CDATA[ name: ietf-ioam
namespace: urn:ietf:params:xml:ns:yang:ietf-ioam
prefix: ioam
reference: RFC XXXX]]></artwork>
</figure></t>
</section> </section>
<section anchor="Acknowledgements" title="Acknowledgements"> <section anchor="IANA" numbered="true" toc="default">
<t>For their valuable comments, discussions, and feedback, we wish to <name>IANA Considerations</name>
acknowledge Greg Mirsky, Reshad Rahman, Tom Petch, Mickey Spiegel, <t>IANA has registered the following URI in the <xref target="RFC3688" for
Thomas Graf, Alex Huang Feng and Justin Iurman.</t> mat="default">"IETF XML Registry"</xref>:</t>
<dl spacing="compact">
<dt>URI:</dt><dd>urn:ietf:params:xml:ns:yang:ietf-ioam</dd>
<dt>Registrant Contact:</dt><dd>The IESG.</dd>
<dt>XML:</dt><dd>N/A; the requested URI is an XML namespace.</dd>
</dl>
<t>IANA has registered the following YANG module in the <xref target="RFC6
020" format="default">"YANG Module Names" registry</xref>:</t>
<dl spacing="compact">
<dt>Name:</dt><dd>ietf-ioam</dd>
<dt>Namespace:</dt><dd>urn:ietf:params:xml:ns:yang:ietf-ioam</dd>
<dt>Prefix:</dt><dd>ioam</dd>
<dt>Reference:</dt><dd>RFC 9617</dd>
</dl>
</section> </section>
</middle> </middle>
<back> <back>
<references title="Normative References"> <references>
<?rfc include='reference.RFC.2119'?> <name>Normative References</name>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.211
<?rfc include='reference.RFC.8174'?> 9.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.817
<?rfc include='reference.RFC.7950'?> 4.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.795
<?rfc include='reference.RFC.8340'?> 0.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.602
<?rfc include='reference.RFC.8342'?> 0.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.834
<?rfc include='reference.RFC.3688'?> 0.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.834
<?rfc include='reference.RFC.6241'?> 2.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.368
<?rfc include='reference.RFC.8040'?> 8.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.624
<?rfc include='reference.RFC.6242'?> 1.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.804
<?rfc include='reference.RFC.8446'?> 0.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.624
<?rfc include='reference.RFC.8341'?> 2.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.844
<?rfc include='reference.RFC.8343'?> 6.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.834
<?rfc include='reference.RFC.8519'?> 1.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.834
<?rfc include='reference.RFC.8532'?> 3.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.851
<?rfc include='reference.RFC.9197'?> 9.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.853
<?rfc include='reference.RFC.9326'?> 2.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.919
<?rfc include='reference.RFC.9452'?> 7.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.932
6.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.945
2.xml"/>
<xi:include href="https://bib.ietf.org/public/rfc/bibxml/reference.RFC.948
6.xml"/>
<?rfc include='reference.RFC.9486'?> <reference anchor="W3C.REC-xml11-20060816" target="https://www.w3.org/T
R/2006/REC-xml11-20060816">
<front>
<title>Extensible Markup Language (XML) 1.1 (Second Edition) </ti
tle>
<author initials="T." surname="Bray" fullname="Tim Bray">
<organization/>
</author>
<author initials="J." surname="Paoli" fullname="Jean Paoli">
<organization/>
</author>
<author initials="C. M." surname="Sperberg-McQueen" fullname="Mic
hael Sperberg-McQueen">
<organization/>
</author>
<author initials="E." surname="Maler" fullname="Eve Maler">
<organization/>
</author>
<author initials="F." surname="Yergeau" fullname="François Yergeau"
>
<organization/>
</author>
<author initials="J." surname="Cowan" fullname="John Cowan">
<organization/>
</author>
<date month="August" year="2006"/>
</front>
<refcontent>W3C Consortium Recommendation REC-xml11-20060816</refcont
ent>
</reference>
</references> </references>
<section numbered="true" toc="default">
<section title="An Example of Incremental Tracing Profile"> <name>An Example of the Incremental Tracing Profile</name>
<t>An example of incremental tracing profile is depicted in the <t>An XML example (per <xref target="W3C.REC-xml11-20060816"/>) of the Inc
remental Tracing Profile is depicted in the
following figure. This configuration is received by an IOAM ingress following figure. This configuration is received by an IOAM ingress
node. This node encapsulates the IOAM data in IPv6 Hop-by-Hop option node. This node encapsulates the IOAM data in the IPv6 Hop-by-Hop option
header. The trace type indicates that each on path node need to capture header. The trace type indicates that each on-path node needs to capture
the transit delay, and add to the IOAM node data list. The incremental the transit delay and add the data to the IOAM node data list. The increme
tracing data space is variable, however, the node data list must not ntal
tracing data space is variable; however, the node data list must not
exceed 512 bytes.</t> exceed 512 bytes.</t>
<sourcecode name="" type="xml"><![CDATA[<rpc xmlns="urn:ietf:params:xml:ns:netco
<t><figure> nf:base:1.0"
<artwork><![CDATA[<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="101">
message-id="101">
<edit-config> <edit-config>
<target> <target>
<candidate/> <candidate/>
</target> </target>
<config> <config>
<ioam xmlns="urn:ietf:params:xml:ns:yang:ietf-ioam"> <ioam xmlns="urn:ietf:params:xml:ns:yang:ietf-ioam">
<admin-config> <admin-config>
<enabled>true</enabled> <enabled>true</enabled>
</admin-config> </admin-config>
<profiles> <profiles>
skipping to change at line 1258 skipping to change at line 1183
<use-namespace>default-namespace</use-namespace> <use-namespace>default-namespace</use-namespace>
<trace-type>trace-transit-delay</trace-type> <trace-type>trace-transit-delay</trace-type>
</trace-types> </trace-types>
<max-length>512</max-length> <max-length>512</max-length>
</incremental-tracing-profile> </incremental-tracing-profile>
</profile> </profile>
</profiles> </profiles>
</ioam> </ioam>
</config> </config>
</edit-config> </edit-config>
</rpc>]]></artwork> </rpc>
</figure></t> ]]></sourcecode>
<t/>
</section> </section>
<section numbered="true" toc="default">
<section title="An Example of Pre-allocated Tracing Profile"> <name>An Example of the Pre-allocated Tracing Profile</name>
<t>An example of pre-allocated tracing profile is depicted in the <t>An example of the Pre-allocated Tracing Profile is depicted in the
following figure. This configuration is received by an IOAM ingress following figure. This configuration is received by an IOAM ingress
node. This node firstly identifies the target flow by using ACL node. This node first identifies the target flow by using the ACL
"test-acl", and then encapsulates the IOAM data in the NSH header. The parameter "test-acl" and then encapsulates the IOAM data in the NSH. The
trace type indicates that each on path node need to capture the name trace type indicates that each on-path node needs to capture the
space specific data in the short format, and add to the IOAM node data namespace-specific data in short format and add the data to the IOAM node
list. This node preallocates the node data list in the packect with 512 data
list. This node pre-allocates the node data list in the packet with 512
bytes.</t> bytes.</t>
<sourcecode name="" type="xml"><![CDATA[<rpc xmlns="urn:ietf:params:xml:ns:netco
<t><figure> nf:base:1.0"
<artwork><![CDATA[<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="101">
message-id="101">
<edit-config> <edit-config>
<target> <target>
<candidate/> <candidate/>
</target> </target>
<config> <config>
<ioam xmlns="urn:ietf:params:xml:ns:yang:ietf-ioam"> <ioam xmlns="urn:ietf:params:xml:ns:yang:ietf-ioam">
<admin-config> <admin-config>
<enabled>true</enabled> <enabled>true</enabled>
</admin-config> </admin-config>
<profiles> <profiles>
skipping to change at line 1306 skipping to change at line 1228
<use-namespace>default-namespace</use-namespace> <use-namespace>default-namespace</use-namespace>
<trace-type>trace-namespace-data</trace-type> <trace-type>trace-namespace-data</trace-type>
</trace-types> </trace-types>
<max-length>512</max-length> <max-length>512</max-length>
</preallocated-tracing-profile> </preallocated-tracing-profile>
</profile> </profile>
</profiles> </profiles>
</ioam> </ioam>
</config> </config>
</edit-config> </edit-config>
</rpc>]]></artwork> </rpc>
</figure></t> ]]></sourcecode>
</section> </section>
<section numbered="true" toc="default">
<section title="An Example of Direct Export Profile"> <name>An Example of the Direct Export Profile</name>
<t>An example of direct export profile is depicted in the following <t>An example of the Direct Export Profile is depicted in the following
figure. This configuration is received by an IOAM egress node. This node figure. This configuration is received by an IOAM egress node. This node
detects the IOAM direct export option in the IPv6 extension header, and detects the IOAM Direct Export Option in the IPv6 extension header and
removes the option to clean all the IOAM data.</t> removes the option to clean all the IOAM data.</t>
<sourcecode name="" type="xml"><![CDATA[<rpc xmlns="urn:ietf:params:xml:ns:netco
<t><figure> nf:base:1.0"
<artwork><![CDATA[<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="101">
message-id="101">
<edit-config> <edit-config>
<target> <target>
<candidate/> <candidate/>
</target> </target>
<config> <config>
<ioam xmlns="urn:ietf:params:xml:ns:yang:ietf-ioam"> <ioam xmlns="urn:ietf:params:xml:ns:yang:ietf-ioam">
<admin-config> <admin-config>
<enabled>true</enabled> <enabled>true</enabled>
</admin-config> </admin-config>
<profiles> <profiles>
skipping to change at line 1339 skipping to change at line 1260
<profile-name>ietf-test-profile</profile-name> <profile-name>ietf-test-profile</profile-name>
<protocol-type>ipv6</protocol-type> <protocol-type>ipv6</protocol-type>
<direct-export-profile> <direct-export-profile>
<node-action>action-decapsulate</node-action> <node-action>action-decapsulate</node-action>
</direct-export-profile> </direct-export-profile>
</profile> </profile>
</profiles> </profiles>
</ioam> </ioam>
</config> </config>
</edit-config> </edit-config>
</rpc>]]></artwork> </rpc>
</figure></t> ]]></sourcecode>
</section> </section>
<section numbered="true" toc="default">
<section title="An Example of Proof of Transit Profile"> <name>An Example of the Proof of Transit Profile</name>
<t>The following figure is a simple example of POT option. This <t>A simple example of the Proof of Transit Profile is depicted in
the following figure. This
configuration indicates the node to apply POT type 0 with IPv6 configuration indicates the node to apply POT type 0 with IPv6
encapsulation.</t> encapsulation.</t>
<sourcecode name="" type="xml"><![CDATA[<rpc xmlns="urn:ietf:params:xml:ns:netco
<t><figure> nf:base:1.0"
<artwork><![CDATA[<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="101">
message-id="101">
<edit-config> <edit-config>
<target> <target>
<candidate/> <candidate/>
</target> </target>
<config> <config>
<ioam xmlns="urn:ietf:params:xml:ns:yang:ietf-ioam"> <ioam xmlns="urn:ietf:params:xml:ns:yang:ietf-ioam">
<admin-config> <admin-config>
<enabled>true</enabled> <enabled>true</enabled>
</admin-config> </admin-config>
<profiles> <profiles>
skipping to change at line 1371 skipping to change at line 1292
<profile-name>ietf-test-profile</profile-name> <profile-name>ietf-test-profile</profile-name>
<protocol-type>ipv6</protocol-type> <protocol-type>ipv6</protocol-type>
<pot-profile> <pot-profile>
<pot-type>pot-type-0</pot-type> <pot-type>pot-type-0</pot-type>
</pot-profile> </pot-profile>
</profile> </profile>
</profiles> </profiles>
</ioam> </ioam>
</config> </config>
</edit-config> </edit-config>
</rpc>]]></artwork> </rpc>
</figure></t> ]]></sourcecode>
</section> </section>
<section numbered="true" toc="default">
<section title="An Example of Edge-to-Edge Profile"> <name>An Example of the Edge-to-Edge Profile</name>
<t>The following figure shows an example of edge-to-edge option. This <t>An example of the Edge-to-Edge Profile is depicted in the following fig
ure.
This
configuration is received by an IOAM egress node. This node detects the configuration is received by an IOAM egress node. This node detects the
IOAM edge-to-edge option in the IPv6 extension header, and removes the IOAM Edge-to-Edge Option in the IPv6 extension header and removes the
option to clean all the IOAM data. As the IOAM egress node, it may option to clean all the IOAM data. As the IOAM egress node, it may
collect the edge-to-edge data and deliver to the data exporting collect the edge-to-edge data and deliver it to the data-exporting
process.</t> process.</t>
<sourcecode name="" type="xml"><![CDATA[<rpc xmlns="urn:ietf:params:xml:ns:netco
<t><figure> nf:base:1.0"
<artwork><![CDATA[<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="101">
message-id="101">
<edit-config> <edit-config>
<target> <target>
<candidate/> <candidate/>
</target> </target>
<config> <config>
<ioam xmlns="urn:ietf:params:xml:ns:yang:ietf-ioam"> <ioam xmlns="urn:ietf:params:xml:ns:yang:ietf-ioam">
<admin-config> <admin-config>
<enabled>true</enabled> <enabled>true</enabled>
</admin-config> </admin-config>
<profiles> <profiles>
skipping to change at line 1406 skipping to change at line 1327
<profile-name>ietf-test-profile</profile-name> <profile-name>ietf-test-profile</profile-name>
<protocol-type>ipv6</protocol-type> <protocol-type>ipv6</protocol-type>
<e2e-profile> <e2e-profile>
<node-action>action-decapsulate</node-action> <node-action>action-decapsulate</node-action>
</e2e-profile> </e2e-profile>
</profile> </profile>
</profiles> </profiles>
</ioam> </ioam>
</config> </config>
</edit-config> </edit-config>
</rpc>]]></artwork> </rpc>
</figure></t> ]]></sourcecode>
</section>
<section anchor="Acknowledgements" numbered="false" toc="default">
<name>Acknowledgements</name>
<t>For their valuable comments, discussions, and feedback, we wish to
acknowledge <contact fullname="Greg Mirsky"/>, <contact fullname="Reshad R
ahman"/>, <contact fullname="Tom Petch"/>, <contact fullname="Mickey Spiegel"/>,
<contact fullname="Thomas Graf"/>, <contact fullname="Alex Huang Feng"/>,
and <contact fullname="Justin Iurman"/>.</t>
</section> </section>
</back> </back>
</rfc> </rfc>
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