<!doctypehtml PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns=http://www.w3.org/1999/xhtml xmlns:iana=http://www.iana.org/assignments><meta content="text/html; charset=utf-8"http-equiv=Content-Type><link href=../_support/iana-registry.css rel=stylesheet><script src=../_support/jquery.js></script><script src=../_support/sort.js></script><title>
   Border Gateway Protocol (BGP) Parameters
  </title><body><h1>Border Gateway Protocol (BGP) Parameters</h1><dl><dt>Last Updated<dd>2021-10-19<dt>Available Formats<dd><a class=altformat href=bgp-parameters.xml> <img src=/_img/icons/text-xml.png> <br> XML </a> <a class=altformat href=bgp-parameters.xhtml> <img src=/_img/icons/text-html.png> <br> HTML </a> <a class=altformat href=bgp-parameters.txt> <img src=/_img/icons/text-plain.png> <br> Plain text </a></dl><p><b> Registries included below </b><ul><li><a href=#bgp-parameters-1> BGP Message Types </a><li><a href=#bgp-parameters-2> BGP Path Attributes </a><li><a href=#bgp-parameters-3> BGP Error (Notification) Codes </a><li><a href=#bgp-parameters-4> BGP Error Subcodes </a> <ul><li><a href=#bgp-parameters-5> Message Header Error subcodes </a><li><a href=#bgp-parameters-6> OPEN Message Error subcodes </a><li><a href=#bgp-parameters-7> UPDATE Message Error subcodes </a><li><a href=#bgp-finite-state-machine-error-subcodes> BGP Finite State Machine Error Subcodes </a><li><a href=#bgp-parameters-8> BGP Cease NOTIFICATION message subcodes </a><li><a href=#route-refresh-error-subcodes> BGP ROUTE-REFRESH Message Error subcodes </a></ul><li><a href=#bgp-parameters-10> BGP Outbound Route Filtering (ORF) Types </a><li><a href=#bgp-parameters-11> BGP OPEN Optional Parameter Types </a><li><a href=#tunnel-types> BGP Tunnel Encapsulation Attribute Tunnel Types </a><li><a href=#tunnel-sub-tlvs> BGP Tunnel Encapsulation Attribute Sub-TLVs </a><li><a href=#bgp-l2-encapsulation-types-registry> BGP Layer 2 Encapsulation Types </a><li><a href=#bgp-l2-tlv-types-registry> BGP Layer 2 TLV Types </a><li><a href=#bgp-aigp> BGP AIGP Attribute Types </a><li><a href=#route-refresh-subcodes> BGP Route Refresh Subcodes </a><li><a href=#pmsi-tunnel-types> P-Multicast Service Interface Tunnel (PMSI Tunnel) Tunnel Types </a><li><a href=#pmsi-tunnel-attributes> P-Multicast Service Interface (PMSI) Tunnel Attribute Flags </a><li><a href=#mcast-vpn-route-types> BGP MCAST-VPN Route Types </a><li><a href=#bgp-prefix-sid-tlv-types> BGP Prefix-SID TLV Types </a><li><a href=#bgp-prefix-sid-label-index-tlv-flags> BGP Prefix-SID Label-Index TLV Flags </a><li><a href=#bgp-prefix-sid-originator-srgb-tlv-flags> BGP Prefix-SID Originator SRGB TLV Flags </a><li><a href=#bgp-graceful-restart-flags> BGP Graceful Restart Flags </a><li><a href=#bgp-graceful-restart-flags-for-address-family> BGP Graceful Restart Flags for Address Family </a><li><a href=#sfp-attribute-tlvs> SFP Attribute TLVs </a><li><a href=#sfp-association-type> SFP Association Type </a><li><a href=#sfc-spi-si-representation-flags> SFC SPI/SI Representation Flags </a><li><a href=#bfd-mode> BFD Mode </a><li><a href=#bfd-discriminator-optional-tlv-type> BFD Discriminator Optional TLV Type </a></ul><h2><a id=bgp-parameters-1 name=bgp-parameters-1> </a> BGP Message Types</h2><dl><dt>Registration Procedure(s)<dd><pre>Standards Action</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-parameters-1.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-parameters-1><thead><tr><th>Value<th>Name<th>Reference<tbody><tr><td align=center>0<td>Reserved<td><tr><td align=center>1<td>OPEN<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>2<td>UPDATE<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>3<td>NOTIFICATION<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>4<td>KEEPALIVE<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>5<td>ROUTE-REFRESH<td>[ <a href=https://www.iana.org/go/rfc2918> RFC2918 </a> ]<tr><td align=center>6-255<td>Unassigned<td></table><h2><a id=bgp-parameters-2 name=bgp-parameters-2> </a> BGP Path Attributes</h2><dl><dt>Registration Procedure(s)<dd><pre>Standards Action</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-parameters-2.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-parameters-2><thead><tr><th>Value<th>Code<th>Reference<tbody><tr><td align=center>0<td>Reserved<td><tr><td align=center>1<td>ORIGIN<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>2<td>AS_PATH<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>3<td>NEXT_HOP<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>4<td>MULTI_EXIT_DISC<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>5<td>LOCAL_PREF<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>6<td>ATOMIC_AGGREGATE<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>7<td>AGGREGATOR<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>8<td>COMMUNITY<td>[ <a href=https://www.iana.org/go/rfc1997> RFC1997 </a> ]<tr><td align=center>9<td>ORIGINATOR_ID<td>[ <a href=https://www.iana.org/go/rfc4456> RFC4456 </a> ]<tr><td align=center>10<td>CLUSTER_LIST<td>[ <a href=https://www.iana.org/go/rfc4456> RFC4456 </a> ]<tr><td align=center>11<td>DPA (deprecated)<td>[Chen, E., Bates, T., "Destination Preference Attribute for BGP", Work in progress, March 1996.][ <a href=https://www.iana.org/go/rfc6938> RFC6938 </a> ]<tr><td align=center>12<td>ADVERTISER (historic) (deprecated)<td>[ <a href=https://www.iana.org/go/rfc1863> RFC1863 </a> ][ <a href=https://www.iana.org/go/rfc4223> RFC4223 </a> ][ <a href=https://www.iana.org/go/rfc6938> RFC6938 </a> ]<tr><td align=center>13<td>RCID_PATH / CLUSTER_ID (Historic) (deprecated)<td>[ <a href=https://www.iana.org/go/rfc1863> RFC1863 </a> ][ <a href=https://www.iana.org/go/rfc4223> RFC4223 </a> ][ <a href=https://www.iana.org/go/rfc6938> RFC6938 </a> ]<tr><td align=center>14<td>MP_REACH_NLRI<td>[ <a href=https://www.iana.org/go/rfc4760> RFC4760 </a> ]<tr><td align=center>15<td>MP_UNREACH_NLRI<td>[ <a href=https://www.iana.org/go/rfc4760> RFC4760 </a> ]<tr><td align=center>16<td>EXTENDED COMMUNITIES<td>[ <a href=#Eric_Rosen> Eric_Rosen </a> ][ <a href=https://www.iana.org/go/draft-ramachandra-bgp-ext-communities-00> draft-ramachandra-bgp-ext-communities-00 </a> ][ <a href=https://www.iana.org/go/rfc4360> RFC4360 </a> ]<tr><td align=center>17<td>AS4_PATH<td>[ <a href=https://www.iana.org/go/rfc6793> RFC6793 </a> ]<tr><td align=center>18<td>AS4_AGGREGATOR<td>[ <a href=https://www.iana.org/go/rfc6793> RFC6793 </a> ]<tr><td align=center>19<td>SAFI Specific Attribute (SSA) (deprecated)<td>[ <a href=#Gargi_Nalawade> Gargi_Nalawade </a> ][ <a href=https://www.iana.org/go/draft-kapoor-nalawade-idr-bgp-ssa-00> draft-kapoor-nalawade-idr-bgp-ssa-00 </a> ][ <a href=https://www.iana.org/go/draft-nalawade-idr-mdt-safi-00> draft-nalawade-idr-mdt-safi-00 </a> ][ <a href=https://www.iana.org/go/draft-wijnands-mt-discovery-00> draft-wijnands-mt-discovery-00 </a> ]<tr><td align=center>20<td>Connector Attribute (deprecated)<td>[ <a href=https://www.iana.org/go/rfc6037> RFC6037 </a> ]<tr><td align=center>21<td>AS_PATHLIMIT (deprecated)<td>[ <a href=https://www.iana.org/go/draft-ietf-idr-as-pathlimit> draft-ietf-idr-as-pathlimit </a> ]<tr><td align=center>22<td>PMSI_TUNNEL<td>[ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>23<td>Tunnel Encapsulation<td>[ <a href=https://www.iana.org/go/rfc9012> RFC9012 </a> ]<tr><td align=center>24<td>Traffic Engineering<td>[ <a href=https://www.iana.org/go/rfc5543> RFC5543 </a> ]<tr><td align=center>25<td>IPv6 Address Specific Extended Community<td>[ <a href=https://www.iana.org/go/rfc5701> RFC5701 </a> ]<tr><td align=center>26<td>AIGP<td>[ <a href=https://www.iana.org/go/rfc7311> RFC7311 </a> ]<tr><td align=center>27<td>PE Distinguisher Labels<td>[ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>28<td>BGP Entropy Label Capability Attribute (deprecated)<td>[ <a href=https://www.iana.org/go/rfc6790> RFC6790 </a> ][ <a href=https://www.iana.org/go/rfc7447> RFC7447 </a> ]<tr><td align=center>29<td>BGP-LS Attribute<td>[ <a href=https://www.iana.org/go/rfc7752> RFC7752 </a> ]<tr><td align=center>30<td>Deprecated<td>[ <a href=https://www.iana.org/go/rfc8093> RFC8093 </a> ]<tr><td align=center>31<td>Deprecated<td>[ <a href=https://www.iana.org/go/rfc8093> RFC8093 </a> ]<tr><td align=center>32<td>LARGE_COMMUNITY<td>[ <a href=https://www.iana.org/go/rfc8092> RFC8092 </a> ]<tr><td align=center>33<td>BGPsec_Path<td>[ <a href=https://www.iana.org/go/rfc8205> RFC8205 </a> ]<tr><td align=center>34<td>BGP Community Container Attribute (TEMPORARY - registered 2017-07-28, extension registered 2018-08-10, expires 2019-07-28)<td>[ <a href=https://www.iana.org/go/draft-ietf-idr-wide-bgp-communities> draft-ietf-idr-wide-bgp-communities </a> ]<tr><td align=center>35<td>Only to Customer (OTC) (TEMPORARY - registered 2018-03-29, extension registered 2021-02-19, expires 2022-03-29)<td>[ <a href=https://www.iana.org/go/draft-ietf-idr-bgp-open-policy> draft-ietf-idr-bgp-open-policy </a> ]<tr><td align=center>36<td>BGP Domain Path (D-PATH) (TEMPORARY - registered 2019-07-08, extension registered 2021-06-18, expires 2022-07-08)<td>[ <a href=https://www.iana.org/go/draft-ietf-bess-evpn-ipvpn-interworking> draft-ietf-bess-evpn-ipvpn-interworking </a> ]<tr><td align=center>37<td>SFP attribute<td>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<tr><td align=center>38<td>BFD Discriminator<td>[ <a href=https://www.iana.org/go/rfc9026> RFC9026 </a> ]<tr><td align=center>39<td>Unassigned<td><tr><td align=center>40<td>BGP Prefix-SID<td>[ <a href=https://www.iana.org/go/rfc8669> RFC8669 </a> ]<tr><td align=center>41-127<td>Unassigned<td><tr><td align=center>128<td>ATTR_SET<td>[ <a href=https://www.iana.org/go/rfc6368> RFC6368 </a> ]<tr><td align=center>129<td>Deprecated<td>[ <a href=https://www.iana.org/go/rfc8093> RFC8093 </a> ]<tr><td align=center>130-240<td>Unassigned<td><tr><td align=center>241<td>Deprecated<td>[ <a href=https://www.iana.org/go/rfc8093> RFC8093 </a> ]<tr><td align=center>242<td>Deprecated<td>[ <a href=https://www.iana.org/go/rfc8093> RFC8093 </a> ]<tr><td align=center>243<td>Deprecated<td>[ <a href=https://www.iana.org/go/rfc8093> RFC8093 </a> ]<tr><td align=center>244-254<td>Unassigned<td><tr><td align=center>255<td>Reserved for development<td>[ <a href=https://www.iana.org/go/rfc2042> RFC2042 </a> ]</table><h2><a id=bgp-parameters-3 name=bgp-parameters-3> </a> BGP Error (Notification) Codes</h2><dl><dt>Registration Procedure(s)<dd><pre>Standards Action</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ][ <a href=https://www.iana.org/go/rfc7313> RFC7313 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-parameters-3.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-parameters-3><thead><tr><th>Value<th>Name<th>Reference<tbody><tr><td align=center>0<td>Reserved<td><tr><td align=center>1<td>Message Header Error<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>2<td>OPEN Message Error<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>3<td>UPDATE Message Error<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>4<td>Hold Timer Expired<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>5<td>Finite State Machine Error<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>6<td>Cease<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>7<td>ROUTE-REFRESH Message Error<td>[ <a href=https://www.iana.org/go/rfc7313> RFC7313 </a> ]<tr><td align=center>8-255<td>Unassigned<td></table><h2><a id=bgp-parameters-4 name=bgp-parameters-4> </a> BGP Error Subcodes</h2><dl><dt>Registration Procedure(s)<dd><pre>Standards Action</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]</dl><div class="registry level2"><h3><a id=bgp-parameters-5 name=bgp-parameters-5> </a> Message Header Error subcodes</h3><dl><dt>Registration Procedure(s)<dd><pre>Standards Action</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-parameters-5.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-parameters-5><thead><tr><th>Value<th>Name<th>Reference<tbody><tr><td align=center>0<td>Unspecific<td>[ <a href=http://www.rfc-editor.org/errata_search.php?eid=4493> RFC Errata 4493 </a> ]<tr><td align=center>1<td>Connection Not Synchronized<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>2<td>Bad Message Length<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>3<td>Bad Message Type<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>4-255<td>Unassigned<td></table><h3><a id=bgp-parameters-6 name=bgp-parameters-6> </a> OPEN Message Error subcodes</h3><dl><dt>Registration Procedure(s)<dd><pre>Standards Action</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-parameters-6.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-parameters-6><thead><tr><th>Value<th>Name<th>Reference<tbody><tr><td align=center>0<td>Unspecific<td>[ <a href=http://www.rfc-editor.org/errata_search.php?eid=4493> RFC Errata 4493 </a> ]<tr><td align=center>1<td>Unsupported Version Number<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>2<td>Bad Peer AS<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>3<td>Bad BGP Identifier<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>4<td>Unsupported Optional Parameter<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>5<td>[Deprecated]<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>6<td>Unacceptable Hold Time<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>7<td>Unsupported Capability<td>[ <a href=https://www.iana.org/go/rfc5492> RFC5492 </a> ]<tr><td align=center>8<td>Role Mismatch (TEMPORARY - registered 2018-03-29, extension registered 2021-02-19, expires 2022-03-29)<td>[ <a href=https://www.iana.org/go/draft-ietf-idr-bgp-open-policy> draft-ietf-idr-bgp-open-policy </a> ]<tr><td align=center>9-255<td>Unassigned<td></table><h3><a id=bgp-parameters-7 name=bgp-parameters-7> </a> UPDATE Message Error subcodes</h3><dl><dt>Registration Procedure(s)<dd><pre>Standards Action</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-parameters-7.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-parameters-7><thead><tr><th>Value<th>Name<th>Reference<tbody><tr><td align=center>0<td>Unspecific<td>[ <a href=http://www.rfc-editor.org/errata_search.php?eid=4493> RFC Errata 4493 </a> ]<tr><td align=center>1<td>Malformed Attribute List<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>2<td>Unrecognized Well-known Attribute<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>3<td>Missing Well-known Attribute<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>4<td>Attribute Flags Error<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>5<td>Attribute Length Error<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>6<td>Invalid ORIGIN Attribute<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>7<td>[Deprecated]<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>8<td>Invalid NEXT_HOP Attribute<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>9<td>Optional Attribute Error<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>10<td>Invalid Network Field<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>11<td>Malformed AS_PATH<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ]<tr><td align=center>12-255<td>Unassigned<td></table><h3><a id=bgp-finite-state-machine-error-subcodes name=bgp-finite-state-machine-error-subcodes> </a> BGP Finite State Machine Error Subcodes</h3><dl><dt>Registration Procedure(s)<dd><pre>Standards Action</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc6608> RFC6608 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-finite-state-machine-error-subcodes.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-finite-state-machine-error-subcodes><thead><tr><th>Value<th>Name<th>Reference<tbody><tr><td align=center>0<td>Unspecified Error<td>[ <a href=https://www.iana.org/go/rfc6608> RFC6608 </a> ]<tr><td align=center>1<td>Receive Unexpected Message in OpenSent State<td>[ <a href=https://www.iana.org/go/rfc6608> RFC6608 </a> ]<tr><td align=center>2<td>Receive Unexpected Message in OpenConfirm State<td>[ <a href=https://www.iana.org/go/rfc6608> RFC6608 </a> ]<tr><td align=center>3<td>Receive Unexpected Message in Established State<td>[ <a href=https://www.iana.org/go/rfc6608> RFC6608 </a> ]<tr><td align=center>4-255<td>Unassigned<td></table><h3><a id=bgp-parameters-8 name=bgp-parameters-8> </a> BGP Cease NOTIFICATION message subcodes</h3><dl><dt>Registration Procedure(s)<dd><pre>Standards Action or Early IANA Allocation process</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc4486> RFC4486 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-parameters-8.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-parameters-8><thead><tr><th>Value<th>Name<th>Reference<tbody><tr><td align=center>0<td>Reserved<td><tr><td align=center>1<td>Maximum Number of Prefixes Reached<td>[ <a href=https://www.iana.org/go/rfc4486> RFC4486 </a> ]<tr><td align=center>2<td>Administrative Shutdown<td>[ <a href=https://www.iana.org/go/rfc4486> RFC4486 </a> ][ <a href=https://www.iana.org/go/rfc9003> RFC9003 </a> ]<tr><td align=center>3<td>Peer De-configured<td>[ <a href=https://www.iana.org/go/rfc4486> RFC4486 </a> ]<tr><td align=center>4<td>Administrative Reset<td>[ <a href=https://www.iana.org/go/rfc4486> RFC4486 </a> ][ <a href=https://www.iana.org/go/rfc9003> RFC9003 </a> ]<tr><td align=center>5<td>Connection Rejected<td>[ <a href=https://www.iana.org/go/rfc4486> RFC4486 </a> ]<tr><td align=center>6<td>Other Configuration Change<td>[ <a href=https://www.iana.org/go/rfc4486> RFC4486 </a> ]<tr><td align=center>7<td>Connection Collision Resolution<td>[ <a href=https://www.iana.org/go/rfc4486> RFC4486 </a> ]<tr><td align=center>8<td>Out of Resources<td>[ <a href=https://www.iana.org/go/rfc4486> RFC4486 </a> ]<tr><td align=center>9<td>Hard Reset<td>[ <a href=https://www.iana.org/go/rfc8538> RFC8538 </a> ]<tr><td align=center>10-255<td>Unassigned<td></table><h3><a id=route-refresh-error-subcodes name=route-refresh-error-subcodes> </a> BGP ROUTE-REFRESH Message Error subcodes</h3><dl><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc7313> RFC7313 </a> ]<dt>Available Formats<dd><a class=altformat href=route-refresh-error-subcodes.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-route-refresh-error-subcodes-range><thead><tr><th>Range<th>Registration Procedures<tbody><tr><td>0-127<td>Standards Action<tr><td>128-255<td>First Come First Served</table><table class=sortable id=table-route-refresh-error-subcodes><thead><tr><th>Value<th>Name<th>Reference<tbody><tr><td align=center>0<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc7313> RFC7313 </a> ]<tr><td align=center>1<td>Invalid Message Length<td>[ <a href=https://www.iana.org/go/rfc7313> RFC7313 </a> ]<tr><td align=center>2-255<td>Unassigned<td></table></div><h2><a id=bgp-parameters-10 name=bgp-parameters-10> </a> BGP Outbound Route Filtering (ORF) Types</h2><dl><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc5291> RFC5291 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-parameters-10.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-parameters-10-range><thead><tr><th>Range<th>Registration Procedures<th>Note<tbody><tr><td>0-63<td>Standards Action<td><tr><td>64-127<td>First Come First Served<td><tr><td>128-255<td>Vendor-Specific<td>IANA does not assign</table><table class=sortable id=table-bgp-parameters-10><thead><tr><th>Value<th>Description<th>Reference<tbody><tr><td align=center>0<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc5291> RFC5291 </a> ]<tr><td align=center>1-63<td>Unassigned<td><tr><td align=center>64<td>Address Prefix ORF<td>[ <a href=https://www.iana.org/go/rfc5292> RFC5292 </a> ]<tr><td align=center>65<td>CP-ORF<td>[ <a href=https://www.iana.org/go/rfc7543> RFC7543 </a> ]<tr><td align=center>66-127<td>Unassigned<td><tr><td align=center>128-255<td>Reserved for Vendor-Specific<td>[ <a href=https://www.iana.org/go/rfc5291> RFC5291 </a> ]</table><h2><a id=bgp-parameters-11 name=bgp-parameters-11> </a> BGP OPEN Optional Parameter Types</h2><dl><dt>Registration Procedure(s)<dd><pre>IETF Review</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc5492> RFC5492 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-parameters-11.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-parameters-11><thead><tr><th>Value<th>Name<th>Reference<tbody><tr><td align=center>0<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc5492> RFC5492 </a> ]<tr><td align=center>1<td>Authentication (deprecated)<td>[ <a href=https://www.iana.org/go/rfc4271> RFC4271 </a> ][ <a href=https://www.iana.org/go/rfc5492> RFC5492 </a> ]<tr><td align=center>2<td>Capabilities<td>[ <a href=https://www.iana.org/go/rfc5492> RFC5492 </a> ]<tr><td align=center>3-254<td>Unassigned<td><tr><td align=center>255<td>Extended Length<td>[ <a href=https://www.iana.org/go/rfc9072> RFC9072 </a> ]</table><h2><a id=tunnel-types name=tunnel-types> </a> BGP Tunnel Encapsulation Attribute Tunnel Types</h2><dl><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc9012> RFC9012 </a> ]<dt>Note<dd><pre>Moved to [<a href=http://www.iana.org/assignments/bgp-tunnel-encapsulation>http://www.iana.org/assignments/bgp-tunnel-encapsulation</a>] per [<a href=https://www.iana.org/go/rfc9012>RFC9012</a>].
    </pre></dl><h2><a id=tunnel-sub-tlvs name=tunnel-sub-tlvs> </a> BGP Tunnel Encapsulation Attribute Sub-TLVs</h2><dl><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc9012> RFC9012 </a> ]<dt>Note<dd><pre>Moved to [<a href=http://www.iana.org/assignments/bgp-tunnel-encapsulation>http://www.iana.org/assignments/bgp-tunnel-encapsulation</a>] per [<a href=https://www.iana.org/go/rfc9012>RFC9012</a>].
      </pre></dl><h2><a id=bgp-l2-encapsulation-types-registry name=bgp-l2-encapsulation-types-registry> </a> BGP Layer 2 Encapsulation Types</h2><dl><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc6624> RFC6624 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-l2-encapsulation-types-registry.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-l2-encapsulation-types-registry-range><thead><tr><th>Range<th>Registration Procedures<tbody><tr><td>0-127<td>Expert Review<tr><td>128-251<td>First Come First Served<tr><td>252-255<td>Experimental Use</table><table class=sortable id=table-bgp-l2-encapsulation-types-registry><thead><tr><th>Value<th>Description<th>Reference<tbody><tr><td align=center>0<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc6624> RFC6624 </a> ]<tr><td align=center>1<td>Frame Relay<td>[ <a href=https://www.iana.org/go/rfc4446> RFC4446 </a> ]<tr><td align=center>2<td>ATM AAL5 SDU VCC transport<td>[ <a href=https://www.iana.org/go/rfc4446> RFC4446 </a> ]<tr><td align=center>3<td>ATM transparent cell transport<td>[ <a href=https://www.iana.org/go/rfc4816> RFC4816 </a> ]<tr><td align=center>4<td>Ethernet (VLAN) Tagged Mode<td>[ <a href=https://www.iana.org/go/rfc4448> RFC4448 </a> ]<tr><td align=center>5<td>Ethernet Raw Mode<td>[ <a href=https://www.iana.org/go/rfc4448> RFC4448 </a> ]<tr><td align=center>6<td>Cisco HDLC<td>[ <a href=https://www.iana.org/go/rfc4618> RFC4618 </a> ]<tr><td align=center>7<td>PPP<td>[ <a href=https://www.iana.org/go/rfc4618> RFC4618 </a> ]<tr><td align=center>8<td>SONET/SDH Circuit Emulation Service<td>[ <a href=https://www.iana.org/go/rfc4842> RFC4842 </a> ]<tr><td align=center>9<td>ATM n-to-one VCC cell transport<td>[ <a href=https://www.iana.org/go/rfc4717> RFC4717 </a> ]<tr><td align=center>10<td>ATM n-to-one VPC cell transport<td>[ <a href=https://www.iana.org/go/rfc4717> RFC4717 </a> ]<tr><td align=center>11<td>IP Layer 2 Transport<td>[ <a href=https://www.iana.org/go/rfc3032> RFC3032 </a> ]<tr><td align=center>12-14<td>Unassigned<td><tr><td align=center>15<td>Frame Relay Port mode<td>[ <a href=https://www.iana.org/go/rfc4619> RFC4619 </a> ]<tr><td align=center>16<td>Unassigned<td><tr><td align=center>17<td>Structure-agnostic E1 over packet<td>[ <a href=https://www.iana.org/go/rfc4553> RFC4553 </a> ]<tr><td align=center>18<td>Structure-agnostic T1 (DS1) over packet<td>[ <a href=https://www.iana.org/go/rfc4553> RFC4553 </a> ]<tr><td align=center>19<td>VPLS<td>[ <a href=https://www.iana.org/go/rfc4761> RFC4761 </a> ]<tr><td align=center>20<td>Structure-agnostic T3 (DS3) over packet<td>[ <a href=https://www.iana.org/go/rfc4553> RFC4553 </a> ]<tr><td align=center>21<td>Nx64kbit/s Basic Service using Structure-aware<td>[ <a href=https://www.iana.org/go/rfc5086> RFC5086 </a> ]<tr><td align=center>22-24<td>Unassigned<td><tr><td align=center>25<td>Frame Relay DLCI<td>[ <a href=https://www.iana.org/go/rfc4619> RFC4619 </a> ]<tr><td align=center>25-39<td>Unassigned<td><tr><td align=center>40<td>Structure-agnostic E3 over packet<td>[ <a href=https://www.iana.org/go/rfc4553> RFC4553 </a> ]<tr><td align=center>41<td>Octet-aligned payload for Structure-agnostic DS1 circuits<td>[ <a href=https://www.iana.org/go/rfc4553> RFC4553 </a> ]<tr><td align=center>42<td>E1 Nx64kbit/s with CAS using Structure-aware<td>[ <a href=https://www.iana.org/go/rfc5086> RFC5086 </a> ]<tr><td align=center>43<td>DS1 (ESF) Nx64kbit/s with CAS using Structure-aware<td>[ <a href=https://www.iana.org/go/rfc5086> RFC5086 </a> ]<tr><td align=center>44<td>DS1 (SF) Nx64kbit/s with CAS using Structure-aware<td>[ <a href=https://www.iana.org/go/rfc5086> RFC5086 </a> ]<tr><td align=center>45-127<td>Unassigned<td><tr><td align=center>128-251<td>Unassigned<td><tr><td align=center>252-255<td>Experimental Use<td>[ <a href=https://www.iana.org/go/rfc6624> RFC6624 </a> ]</table><h2><a id=bgp-l2-tlv-types-registry name=bgp-l2-tlv-types-registry> </a> BGP Layer 2 TLV Types</h2><dl><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc6624> RFC6624 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-l2-tlv-types-registry.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-l2-tlv-types-registry-range><thead><tr><th>Range<th>Registration Procedures<tbody><tr><td>0-127<td>Expert Review<tr><td>128-251<td>First Come First Served<tr><td>252-255<td>Experimental Use</table><table class=sortable id=table-bgp-l2-tlv-types-registry><thead><tr><th>Value<th>Description<th>Reference<tbody><tr><td align=center>0<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc6624> RFC6624 </a> ]<tr><td align=center>1<td>Circuit Status Vector<td>[ <a href=https://www.iana.org/go/rfc6624> RFC6624 </a> ]<tr><td align=center>2-127<td>Unassigned<td><tr><td align=center>128-251<td>Unassigned<td><tr><td align=center>252-255<td>Experimental Use<td>[ <a href=https://www.iana.org/go/rfc6624> RFC6624 </a> ]</table><h2><a id=bgp-aigp name=bgp-aigp> </a> BGP AIGP Attribute Types</h2><dl><dt>Registration Procedure(s)<dd><pre>Standards Action</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc7311> RFC7311 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-aigp.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-aigp><thead><tr><th>Value<th>Description<th>Reference<tbody><tr><td align=center>0<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc7311> RFC7311 </a> ]<tr><td align=center>1<td>AIGP<td>[ <a href=https://www.iana.org/go/rfc7311> RFC7311 </a> ]<tr><td align=center>2-255<td>Unassigned<td></table><h2><a id=route-refresh-subcodes name=route-refresh-subcodes> </a> BGP Route Refresh Subcodes</h2><dl><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc7313> RFC7313 </a> ]<dt>Available Formats<dd><a class=altformat href=route-refresh-subcodes.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-route-refresh-subcodes-range><thead><tr><th>Range<th>Registration Procedures<tbody><tr><td>0-127<td>Standards Action<tr><td>128-254<td>First Come First Served</table><table class=sortable id=table-route-refresh-subcodes><thead><tr><th>Value<th>Code<th>Reference<tbody><tr><td align=center>0<td>Route-Refresh<td>[ <a href=https://www.iana.org/go/rfc2918> RFC2918 </a> ][ <a href=https://www.iana.org/go/rfc5291> RFC5291 </a> ]<tr><td align=center>1<td>BoRR<td>[ <a href=https://www.iana.org/go/rfc7313> RFC7313 </a> ]<tr><td align=center>2<td>EoRR<td>[ <a href=https://www.iana.org/go/rfc7313> RFC7313 </a> ]<tr><td align=center>3-254<td>Unassigned<td><tr><td align=center>255<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc7313> RFC7313 </a> ]</table><h2><a id=pmsi-tunnel-types name=pmsi-tunnel-types> </a> P-Multicast Service Interface Tunnel (PMSI Tunnel) Tunnel Types</h2><dl><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc7385> RFC7385 </a> ][ <a href=https://www.iana.org/go/rfc8317> RFC8317 </a> ]<dt>Note<dd><pre>The status of value 0xFF may only be changed through Standards Action [<a href=https://www.iana.org/go/rfc8126>RFC8126</a>].
   </pre><dt>Available Formats<dd><a class=altformat href=pmsi-tunnel-types.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-pmsi-tunnel-types-range><thead><tr><th>Range<th>Registration Procedures<tbody><tr><td>0x00-0x7A<td>IETF Review<tr><td>0x7B-0x7E<td>Experimental Use<tr><td>0x80-0xFA<td>Composite Tunnel<tr><td>0xFB-0xFE<td>Experimental Use<tr><td>0xFF<td>Standards Action</table><table class=sortable id=table-pmsi-tunnel-types><thead><tr><th>Value<th>Meaning<th>Reference<tbody><tr><td align=center>0x00<td>no tunnel information present<td>[ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x01<td>RSVP-TE P2MP LSP<td>[ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x02<td>mLDP P2MP LSP<td>[ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x03<td>PIM-SSM Tree<td>[ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x04<td>PIM-SM Tree<td>[ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x05<td>BIDIR-PIM Tree<td>[ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x06<td>Ingress Replication<td>[ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x07<td>mLDP MP2MP LSP<td>[ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x08<td>Transport Tunnel<td>[ <a href=https://www.iana.org/go/rfc7524> RFC7524 </a> ]<tr><td align=center>0x09<td>Unassigned<td><tr><td align=center>0x0A<td>Assisted-Replication Tunnel (TEMPORARY - registered 2016-06-30, extension registered 2021-06-18, expires 2022-06-30)<td>[ <a href=https://www.iana.org/go/draft-ietf-bess-evpn-optimized-ir> draft-ietf-bess-evpn-optimized-ir </a> ]<tr><td align=center>0x0B<td>BIER<td>[ <a href=https://www.iana.org/go/rfc8556> RFC8556 </a> ]<tr><td align=center>0x0C<td>SR-MPLS P2MP Tree (TEMPORARY - registered 2020-12-09, extension registered 2021-10-19, expires 2022-12-09)<td>[ <a href=https://www.iana.org/go/draft-ietf-bess-mvpn-evpn-sr-p2mp-01> draft-ietf-bess-mvpn-evpn-sr-p2mp-01 </a> ]<tr><td align=center>0x0D-0x7A<td>Unassigned<td><tr><td align=center>0x7B-0x7E<td>Reserved for Experimental Use<td>[ <a href=https://www.iana.org/go/rfc8317> RFC8317 </a> ]<tr><td align=center>0x7F<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc8317> RFC8317 </a> ]<tr><td align=center>0x80-0xFA<td>Reserved for Composite Tunnel<td>[ <a href=https://www.iana.org/go/rfc8317> RFC8317 </a> ]<tr><td align=center>0xFB-0xFE<td>Reserved for Experimental Use<td>[ <a href=https://www.iana.org/go/rfc7385> RFC7385 </a> ]<tr><td align=center>0xFF<td>wildcard transport tunnel type<td>[ <a href=https://www.iana.org/go/rfc8338> RFC8338 </a> ]</table><h2><a id=pmsi-tunnel-attributes name=pmsi-tunnel-attributes> </a> P-Multicast Service Interface (PMSI) Tunnel Attribute Flags</h2><dl><dt>Registration Procedure(s)<dd><pre>Standards Action</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc7902> RFC7902 </a> ]<dt>Available Formats<dd><a class=altformat href=pmsi-tunnel-attributes.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-pmsi-tunnel-attributes><thead><tr><th>Value<th>Name<th>Reference<tbody><tr><td align=center>0<td>Unassigned<td><tr><td align=center>1<td>Extension<td>[ <a href=https://www.iana.org/go/rfc7902> RFC7902 </a> ]<tr><td align=center>2<td>Leaf Information Required per-Flow (LIR-pF)<td>[ <a href=https://www.iana.org/go/rfc8534> RFC8534 </a> ]<tr><td align=center>3-4<td>Assisted-Replication Type (T) (TEMPORARY - registered 2016-06-30, extension registered 2021-06-18, expires 2022-06-30)<td>[ <a href=https://www.iana.org/go/draft-ietf-bess-evpn-optimized-ir> draft-ietf-bess-evpn-optimized-ir </a> ]<tr><td align=center>5<td>Broadcast and Multicast (BM) (TEMPORARY - registered 2016-06-30, extension registered 2021-06-18, expires 2022-06-30)<td>[ <a href=https://www.iana.org/go/draft-ietf-bess-evpn-optimized-ir> draft-ietf-bess-evpn-optimized-ir </a> ]<tr><td align=center>6<td>Unknown (U) (TEMPORARY - registered 2016-06-30, extension registered 2021-06-18, expires 2022-06-30)<td>[ <a href=https://www.iana.org/go/draft-ietf-bess-evpn-optimized-ir> draft-ietf-bess-evpn-optimized-ir </a> ]<tr><td align=center>7<td>Leaf Information Required (L)<td>[ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]</table><h2><a id=mcast-vpn-route-types name=mcast-vpn-route-types> </a> BGP MCAST-VPN Route Types</h2><dl><dt>Registration Procedure(s)<dd><pre>Standards Action</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ][ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<dt>Note<dd><pre>Values may be assigned from one of several ranges:

 - Range 0x01-0x3f: Generic/PIM Range.  Values are assigned from
   this range when the NLRI format associated with the route type
   presupposes that PIM or IGMP is the C-multicast control protocol,
   or when the NLRI format associated with the route type is
   independent of the C-multicast control protocol.

 - Range 0x43-0x7f: mLDP Range.  Values are assigned from this range
   when the NLRI format associated with the route type presupposes
   that mLDP is the C-multicast control protocol.

 - Range 0x80-0xff: This range is reserved; values should not be
   assigned from this range.

In general, whenever an assignment is requested from this registry,
two codepoints should be requested at the same time: one from the
Generic/PIM range (0x01-0x3f) and one from the mLDP range (0x43-0x7f). 
The two codepoints should have the same low-order 6 bits.  If one of 
the two codepoints is not actually needed, it should be registered 
anyway, and marked as "Reserved."
   </pre><dt>Available Formats<dd><a class=altformat href=mcast-vpn-route-types.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-mcast-vpn-route-types><thead><tr><th>Value<th>Meaning<th>Reference<tbody><tr><td align=center>0x00<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ][ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x01<td>Intra-AS I-PMSI A-D route<td>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ][ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x02<td>Inter-AS I-PMSI A-D route<td>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ][ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x03<td>S-PMSI A-D route<td>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ][ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x04<td>Leaf A-D route<td>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ][ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x05<td>Source Active A-D route<td>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ][ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x06<td>Shared Tree Join route<td>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ][ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x07<td>Source Tree Join route<td>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ][ <a href=https://www.iana.org/go/rfc6514> RFC6514 </a> ]<tr><td align=center>0x08-0x3f<td>Unassigned (Generic/PIM range)<td><tr><td align=center>0x40-0x42<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ]<tr><td align=center>0x43<td>S-PMSI A-D route for C-multicast mLDP<td>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ]<tr><td align=center>0x44<td>Leaf A-D route for C-multicast mLDP<td>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ]<tr><td align=center>0x45-0x46<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ]<tr><td align=center>0x47<td>Source Tree Join route for C-multicast mLDP<td>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ]<tr><td align=center>0x48-0x7f<td>Unassigned (mLDP range)<td><tr><td align=center>0x80-0xff<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc7441> RFC7441 </a> ]</table><h2><a id=bgp-prefix-sid-tlv-types name=bgp-prefix-sid-tlv-types> </a> BGP Prefix-SID TLV Types</h2><dl><dt>Registration Procedure(s)<dd><pre>Expert Review</pre><dt>Expert(s)<dd><pre>Acee Lindem, Hannes Gredler</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc8669> RFC8669 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-prefix-sid-tlv-types.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-prefix-sid-tlv-types><thead><tr><th>Value<th>Type<th>Reference<tbody><tr><td align=center>0<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc8669> RFC8669 </a> ]<tr><td align=center>1<td>Label-Index<td>[ <a href=https://www.iana.org/go/rfc8669> RFC8669 </a> ]<tr><td align=center>2<td>Deprecated<td>[ <a href=https://www.iana.org/go/rfc8669> RFC8669 </a> ]<tr><td align=center>3<td>Originator SRGB<td>[ <a href=https://www.iana.org/go/rfc8669> RFC8669 </a> ]<tr><td align=center>4<td>Deprecated<td>[ <a href=https://www.iana.org/go/draft-ietf-bess-srv6-services-02> draft-ietf-bess-srv6-services-02 </a> ]<tr><td align=center>5<td>SRv6 L3 Service<td>[ <a href=https://www.iana.org/go/draft-ietf-bess-srv6-services-02> draft-ietf-bess-srv6-services-02 </a> ]<tr><td align=center>6<td>SRv6 L2 Service<td>[ <a href=https://www.iana.org/go/draft-ietf-bess-srv6-services-02> draft-ietf-bess-srv6-services-02 </a> ]<tr><td align=center>7-254<td>Unassigned<td><tr><td align=center>255<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc8669> RFC8669 </a> ]</table><h2><a id=bgp-prefix-sid-label-index-tlv-flags name=bgp-prefix-sid-label-index-tlv-flags> </a> BGP Prefix-SID Label-Index TLV Flags</h2><dl><dt>Registration Procedure(s)<dd><pre>Expert Review</pre><dt>Expert(s)<dd><pre>Acee Lindem, Hannes Gredler</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc8669> RFC8669 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-prefix-sid-label-index-tlv-flags.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-prefix-sid-label-index-tlv-flags><thead><tr><th>Value<th>Name<th>Reference<tbody><tr><td align=center>0x0001-0x8000<td>Unassigned<td></table><h2><a id=bgp-prefix-sid-originator-srgb-tlv-flags name=bgp-prefix-sid-originator-srgb-tlv-flags> </a> BGP Prefix-SID Originator SRGB TLV Flags</h2><dl><dt>Registration Procedure(s)<dd><pre>Expert Review</pre><dt>Expert(s)<dd><pre>Acee Lindem, Hannes Gredler</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc8669> RFC8669 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-prefix-sid-originator-srgb-tlv-flags.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-prefix-sid-originator-srgb-tlv-flags><thead><tr><th>Value<th>Name<th>Reference<tbody><tr><td align=center>0x0001-0x8000<td>Unassigned<td></table><h2><a id=bgp-graceful-restart-flags name=bgp-graceful-restart-flags> </a> BGP Graceful Restart Flags</h2><dl><dt>Registration Procedure(s)<dd><pre>Standards Action</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc4724> RFC4724 </a> ][ <a href=https://www.iana.org/go/rfc8538> RFC8538 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-graceful-restart-flags.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-graceful-restart-flags><thead><tr><th>Bit Position<th>Name<th>Short Name<th>Reference<tbody><tr><td align=center>0<td>Restart State<td>R<td>[ <a href=https://www.iana.org/go/rfc4724> RFC4724 </a> ]<tr><td align=center>1<td>Notification<td>N<td>[ <a href=https://www.iana.org/go/rfc8538> RFC8538 </a> ]<tr><td align=center>2-3<td>Unassigned<td><td></table><h2><a id=bgp-graceful-restart-flags-for-address-family name=bgp-graceful-restart-flags-for-address-family> </a> BGP Graceful Restart Flags for Address Family</h2><dl><dt>Registration Procedure(s)<dd><pre>Standards Action</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc4724> RFC4724 </a> ][ <a href=https://www.iana.org/go/rfc8538> RFC8538 </a> ]<dt>Available Formats<dd><a class=altformat href=bgp-graceful-restart-flags-for-address-family.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bgp-graceful-restart-flags-for-address-family><thead><tr><th>Bit Position<th>Name<th>Short Name<th>Reference<tbody><tr><td align=center>0<td>Forwarding State<td>F<td>[ <a href=https://www.iana.org/go/rfc4724> RFC4724 </a> ]<tr><td align=center>1-7<td>Unassigned<td><td></table><h2><a id=sfp-attribute-tlvs name=sfp-attribute-tlvs> </a> SFP Attribute TLVs</h2><dl><dt>Registration Procedure(s)<dd><pre>First Come First Served</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<dt>Available Formats<dd><a class=altformat href=sfp-attribute-tlvs.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-sfp-attribute-tlvs><thead><tr><th>Type<th>Name<th>Reference<th>Registration Date<tbody><tr><td align=center>0<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<td><tr><td align=center>1<td>Association TLV<td>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<td>2020-09-02<tr><td align=center>2<td>Hop TLV<td>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<td>2020-09-02<tr><td align=center>3<td>SFT TLV<td>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<td>2020-09-02<tr><td align=center>4<td>MPLS Swapping/Stacking<td>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<td>2020-09-02<tr><td align=center>5<td>SFP Traversal With MPLS<td>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<td>2020-09-02<tr><td align=center>6-65534<td>Unassigned<td><td><tr><td align=center>65535<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<td></table><h2><a id=sfp-association-type name=sfp-association-type> </a> SFP Association Type</h2><dl><dt>Registration Procedure(s)<dd><pre>First Come First Served</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<dt>Available Formats<dd><a class=altformat href=sfp-association-type.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-sfp-association-type><thead><tr><th>Association Type<th>Name<th>Reference<th>Registration Date<tbody><tr><td align=center>0<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<td><tr><td align=center>1<td>Bidirectional SFP<td>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<td>2020-09-02<tr><td align=center>2-65534<td>Unassigned<td><td><tr><td align=center>65535<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<td></table><h2><a id=sfc-spi-si-representation-flags name=sfc-spi-si-representation-flags> </a> SFC SPI/SI Representation Flags</h2><dl><dt>Registration Procedure(s)<dd><pre>Standards Action</pre><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<dt>Available Formats<dd><a class=altformat href=sfc-spi-si-representation-flags.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-sfc-spi-si-representation-flags><thead><tr><th>Value<th>Name<th>Reference<tbody><tr><td align=center>0<td>NSH data plane<td>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<tr><td align=center>1<td>MPLS data plane<td>[ <a href=https://www.iana.org/go/rfc9015> RFC9015 </a> ]<tr><td align=center>2-15<td>Unassigned<td></table><h2><a id=bfd-mode name=bfd-mode> </a> BFD Mode</h2><dl><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc9026> RFC9026 </a> ]<dt>Available Formats<dd><a class=altformat href=bfd-mode.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bfd-mode-range><thead><tr><th>Range<th>Registration Procedures<tbody><tr><td>0-175<td>IETF Review<tr><td>176-249<td>First Come First Served<tr><td>250-254<td>Experimental Use<tr><td>255<td>IETF Review</table><table class=sortable id=table-bfd-mode><thead><tr><th>Value<th>Description<th>Reference<tbody><tr><td align=center>0<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc9026> RFC9026 </a> ]<tr><td align=center>1<td>P2MP BFD Session<td>[ <a href=https://www.iana.org/go/rfc9026> RFC9026 </a> ]<tr><td align=center>2-175<td>Unassigned<td><tr><td align=center>176-249<td>Unassigned<td><tr><td align=center>250-254<td>Experimental Use<td>[ <a href=https://www.iana.org/go/rfc9026> RFC9026 </a> ]<tr><td align=center>255<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc9026> RFC9026 </a> ]</table><h2><a id=bfd-discriminator-optional-tlv-type name=bfd-discriminator-optional-tlv-type> </a> BFD Discriminator Optional TLV Type</h2><dl><dt>Reference<dd>[ <a href=https://www.iana.org/go/rfc9026> RFC9026 </a> ]<dt>Available Formats<dd><a class=altformat href=bfd-discriminator-optional-tlv-type.csv> <img src=/_img/icons/text-csv.png> <br> CSV </a></dl><table class=sortable id=table-bfd-discriminator-optional-tlv-type-range><thead><tr><th>Range<th>Registration Procedures<tbody><tr><td>0-175<td>IETF Review<tr><td>176-249<td>First Come First Served<tr><td>250-254<td>Experimental Use<tr><td>255<td>IETF Review</table><table class=sortable id=table-bfd-discriminator-optional-tlv-type><thead><tr><th>Value<th>Description<th>Reference<tbody><tr><td align=center>0<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc9026> RFC9026 </a> ]<tr><td align=center>1<td>Source IP Address<td>[ <a href=https://www.iana.org/go/rfc9026> RFC9026 </a> ]<tr><td align=center>2-175<td>Unassigned<td><tr><td align=center>176-249<td>Unassigned<td><tr><td align=center>250-254<td>Experimental Use<td>[ <a href=https://www.iana.org/go/rfc9026> RFC9026 </a> ]<tr><td align=center>255<td>Reserved<td>[ <a href=https://www.iana.org/go/rfc9026> RFC9026 </a> ]</table><h1 class=people>Contact Information</h1><table class=sortable><thead><tr><th>ID<th>Name<th>Contact URI<th>Last Updated<tbody><tr><td><a id=Eric_Rosen name=Eric_Rosen> [Eric_Rosen] </a><td>Eric Rosen<td><a href=mailto:erosen&cisco.com> mailto:erosen&cisco.com </a><td>2010-02-23<tr><td><a id=Gargi_Nalawade name=Gargi_Nalawade> [Gargi_Nalawade] </a><td>Gargi Nalawade<td><a href=mailto:gargi&cisco.com> mailto:gargi&cisco.com </a><td>2004-02</table>