module ietf-keyed-v6-tunnel { yang-version 1.1; namespace "urn:ietf:params:xml:ns:yang:ietf-keyed-v6-tunnel"; prefix k6tun; import ietf-interfaces { prefix if; } import ietf-inet-types { prefix inet; } import ietf-yang-types { prefix yang; } organization "IETF l2tpext Working Group"; contact "sunqi_ietf@163.com ian.farrer@telekom.de leo.liubing@huawei.com giheron@cisco.com "; description "Keyed IPv6 L2TPv3 Tunnel"; revision 2016-10-24 { description "Update of model for -03"; reference "draft-ietf-lwtpext-keyed-v6-tunnel-yang-03"; } revision 2016-03-21 { description "Added sequencing feature"; reference "draft-ietf-l2tpext-keyed-v6-tunnel-yang-02"; } revision 2015-07-06 { description "General clean-up" ; reference "draft-sun-l2tpext-keyed-v6-tunnel-yang-01"; } revision 2015-03-09 { description "Initial version. "; reference "draft-sun-l2tpext-keyed-v6-tunnel-yang-00"; } /* * features */ feature fcs-retention { description "Device supports the retention of frame check sequence (FCS) as per Section 4.7 of RFC4720"; } feature vccv { description "Device supports the Pseudowire Virtual Circuit Connectivity Verification (VCCV) as per RFC5085"; } feature bfd { description "Device supports multihop BFD between tunnel endpoints as per RFC5883"; } feature vccv-bfd { description "Device supports BFD over VCCV as per RFC5885"; } feature l2tpv3-fragmentation { description "Device supports L2TPv3 fragmentation as per RFC4623"; } feature l2tpv3-sequencing { description "Device supports frame sequencing as per section 4.6.1 of RFC3931"; } /* * typedefs */ /* * groupings */ /* * config parameters */ container tunnel-configurations { list tunnel-configuration { key "tunnel-name"; unique "src-interface remote-ipv6"; unique "local-ipv6 remote-ipv6"; leaf tunnel-name { type string; description "Name for this keyed tunnel."; } leaf src-interface { type if:interface-ref; mandatory true; description "Source interface that identifies the L2 circuit endpoint."; } leaf local-ipv6 { type inet:ipv6-address; mandatory true; description "IPv6 address for local end of keyed tunnel."; } leaf remote-ipv6 { type inet:ipv6-address; mandatory true; description "IPv6 address for remote end of keyed tunnel."; } leaf local-session-id { type uint32; default "4294967295"; description "As the IPv6 address is used to determine the tunnel and there is a single session per tunnel, the Session ID can be ignored upon receipt. For compatibility with other tunnel termination platforms supporting two-stage resolution (IPv6 address + Session ID), the Session ID is configured with a random value other than all zeros. If both ends support one-stage (IPv6 address), then the Session ID is recommended to be set to all ones."; } leaf remote-session-id { type uint32; default "4294967295"; description "Since IPv6 address is used to determine the tunnel and there is one session per tunnel, the Session ID can be ignored upon receipt. For compatibility with other tunnel termination platforms supporting two-stage resolution (IPv6 address + Session ID) the Session ID is configured with a random value other than all zeros. If both ends support one-stage (IPv6 address), then the Session ID is recommended to be set to all ones."; } container local-cookies { description "The length of cookie MUST be 64-bit. It MUST be possible to change the cookie value at any time in a manner that does not drop any legitimate tunneled packets - i.e. the receiver must accept a received cookie matching either value during a change of cookie value."; list local-cookie { key "cookie-name"; leaf cookie-name { type string; description "Name identifying this cookie."; } min-elements 2; max-elements 2; leaf cookie-value { type uint64; mandatory true; description "value of this cookie"; } description "List of local cookies - to allow for cookie rollover without traffic loss, must be configured with two entries."; } } leaf remote-cookie { type uint64; mandatory true; description "The length of cookie MUST be 64-bit. A single remote cookie is used for sending packets."; } leaf retain-fcs { if-feature fcs-retention; type empty; description "If this parameter is present, the router is configued to retain the Frame Check Sequence (FCS). Any such router MUST retain the FCS for all frames sent over that tunnel."; } container enable-vccv { if-feature vccv; presence "Enable VCCV [RFC5085]"; leaf enable-bfd { if-feature vccv-bfd; type empty; description "Enable VCCV-BFD [RFC5885]."; } description "Enable VCCV [RFC5085]."; } leaf enable-bfd { if-feature bfd; type empty; description "Enable BFD between the tunnel endpoints[RFC5883]."; } leaf disable-pmtu { type empty; description "Disable IPv6 PMTU discovery [RFC1981]."; } container enable-fragmentation { if-feature l2tpv3-fragmentation; presence "Enable L2TPv3 fragmentation [RFC4623]"; leaf fragment-mru { type uint16; description "Explicit override for fragmentation MRU."; } description "Default is to fragment to PMTU (or 1500 if PMTU is disabled) minus 52 octets for the encapsulation overhead."; } leaf enable-sequencing { if-feature l2tpv3-sequencing; type empty; description "Enable L2TPv3 sequencing [RFC3931 section 4.6.1]."; } description "A keyed-v6-tunnel typically supports one l2tpv3 session per tunnel. The src-interface and local-ipv6 both uniquely identify a tunnel endpoint. If a virtual interface is used, the local-ipv6 and remote-ipv6 as a pair MUST also be unique."; } description "Container for list of keyed-v6-tunnel entries"; } container tunnel-states { config false; list tunnel-state { key "tunnel-name"; leaf tunnel-name { type string; description "Name of this keyed tunnel."; } leaf sent-packet { type yang:zero-based-counter64; description "Counter for the number of packets sent over tunnel."; } leaf sent-byte { type yang:zero-based-counter64; description "Counter for total sent bytes (of inner packets)."; } leaf received-packet { type yang:zero-based-counter64; description "Counter for the number of valid packets received from the tunnel."; } leaf received-byte { type yang:zero-based-counter64; description "Counter for total received bytes (of inner packets)."; } leaf dropped-packet { type yang:zero-based-counter64; description "Counter for number of dropped packets matching this tunnel (e.g. due to invalid received cookie, insufficient resources to process)."; } leaf dropped-byte { type yang:zero-based-counter64; description "Counter for total dropped bytes (of inner packets)."; } leaf fragment-counter { type yang:zero-based-counter64; description "Counter for number of received fragments."; } description "Per-tunnel statistics."; } description "Container for list of tunnel statistics."; } }