module ietf-mpls-ldp-extended { namespace "urn:ietf:params:xml:ns:yang:ietf-mpls-ldp-extended"; prefix "ldp-ext"; import ietf-inet-types { prefix "inet"; } import ietf-routing { prefix "rt"; } import ietf-key-chain { prefix "key-chain"; } import ietf-mpls-ldp { prefix "ldp"; } import ietf-interfaces { prefix "if"; } organization "IETF MPLS Working Group"; contact "WG Web: WG List: WG Chair: Loa Andersson WG Chair: Ross Callon WG Chair: George Swallow Editor: Kamran Raza Editor: Rajiv Asati Editor: Xufeng Liu Editor: Santosh Esale Editor: Xia Chen Editor: Himanshu Shah "; description "This YANG module defines the essential components for the management of Multi-Protocol Label Switching (MPLS) Label Distribution Protocol (LDP). It is also the base model to be augmented for Multipoint LDP (mLDP)."; revision 2017-10-29 { description "Initial revision."; reference "RFC XXXX: YANG Data Model for MPLS LDP."; } /* * Features */ feature capability-end-of-lib { description "This feature indicates that the system allows to configure LDP end-of-lib capability."; } feature capability-typed-wildcard-fec { description "This feature indicates that the system allows to configure LDP typed-wildcard-fec capability."; } feature capability-upstream-label-assignment { description "This feature indicates that the system allows to configure LDP upstream label assignment capability."; } feature forwarding-nexthop-config { description "This feature indicates that the system allows to configure forwarding nexthop on interfaces."; } feature graceful-restart-helper-mode { description "This feature indicates that the system supports graceful restart helper mode."; } feature per-interface-timer-config { description "This feature indicates that the system allows to configure interface hello timers at the per-interface level."; } feature per-peer-graceful-restart-config { description "This feature indicates that the system allows to configure graceful restart at the per-peer level."; } feature per-peer-session-attributes-config { description "This feature indicates that the system allows to configure session attributes at the per-peer level."; } feature policy-label-assignment-config { description "This feature indicates that the system allows to configure policies to assign labels according to certain prefixes."; } feature policy-ordered-label-config { description "This feature indicates that the system allows to configure ordered label policies."; } feature policy-targeted-discovery-config { description "This feature indicates that the system allows to configure policies to control the acceptance of targeted neighbor discovery hello messages."; } feature session-downstream-on-demand-config { description "This feature indicates that the system allows to configure session downstream-on-demand"; } /* * Typedefs */ typedef neighbor-list-ref { type string; description "A type for a reference to a neighbor address list. The string value is the name identifier for uniquely identifying the referenced address list, which contains a list of addresses that a routing policy can applied. The definition of such an address list is outside the scope of this document."; } typedef prefix-list-ref { type string; description "A type for a reference to a prefix list. The string value is the name identifier for uniquely identifying the referenced prefix set, which contains a list of prefixes that a routing policy can applied. The definition of such a prefix set is outside the scope of this document."; } typedef peer-list-ref { type string; description "A type for a reference to a peer address list. The string value is the name identifier for uniquely identifying the referenced address list, which contains a list of addresses that a routing policy can applied. The definition of such an address list is outside the scope of this document."; } /* * Identities */ /* * Groupings */ grouping address-family-ipv4-augment { description "Augmentation to address family IPv4."; uses policy-container; leaf transport-address { type inet:ipv4-address; description "The transport address advertised in LDP Hello messages."; } } // address-family-ipv4-augment grouping authentication-keychain-augment { description "Augmentation to authentication to add keychain."; leaf key-chain { type key-chain:key-chain-ref; description "key-chain name."; } } // authentication-keychain-augment grouping capability-augment { description "Augmentation to capability."; container end-of-lib { if-feature capability-end-of-lib; description "Configure end-of-lib capability."; leaf enable { type boolean; description "Enable end-of-lib capability."; } } container typed-wildcard-fec { if-feature capability-typed-wildcard-fec; description "Configure typed-wildcard-fec capability."; leaf enable { type boolean; description "Enable typed-wildcard-fec capability."; } } container upstream-label-assignment { if-feature capability-upstream-label-assignment; description "Configure upstream label assignment capability."; leaf enable { type boolean; description "Enable upstream label assignment."; } } } // capability-augment grouping global-augment { description "Augmentation to global attributes."; leaf igp-synchronization-delay { type uint16 { range 3..60; } units seconds; description "Sets the interval that the LDP waits before notifying the Interior Gateway Protocol (IGP) that label exchange is completed so that IGP can start advertising the normal metric for the link."; } } // global-augment grouping global-forwarding-nexthop-augment { description "Augmentation to global forwarding nexthop interfaces."; container forwarding-nexthop { if-feature forwarding-nexthop-config; description "Configuration for forwarding nexthop."; container interfaces { description "A list of interfaces on which forwarding is disabled."; list interface { key "name"; description "List of LDP interfaces."; uses ldp:ldp-interface-ref; list address-family { key "afi"; description "Per-vrf per-af params."; leaf afi { type ldp:ldp-address-family; description "Address family type value."; } leaf ldp-disable { type boolean; description "Disable LDP forwarding on the interface."; } } // address-family } // list interface } // interfaces } // forwarding-nexthop } // global-forwarding-nexthop-augment grouping graceful-restart-augment { description "Augmentation to graceful restart."; leaf helper-enable { if-feature graceful-restart-helper-mode; type boolean; description "Enable or disable graceful restart helper mode."; } } // graceful-restart-augment grouping interface-address-family-ipv4-augment { description "Augmentation to interface address family IPv4."; leaf transport-address { type union { type enumeration { enum "use-interface-address" { description "Use interface address as the transport address."; } } type inet:ipv4-address; } description "IP address to be advertised as the LDP transport address."; } } // interface-address-family-ipv4-augment grouping interface-address-family-ipv6-augment { description "Augmentation to interface address family IPv6."; leaf transport-address { type union { type enumeration { enum "use-interface-address" { description "Use interface address as the transport address."; } } type inet:ipv6-address; } description "IP address to be advertised as the LDP transport address."; } } // interface-address-family-ipv6-augment grouping interface-augment { description "Augmentation to interface."; uses ldp:basic-discovery-timers { if-feature per-interface-timer-config; } leaf igp-synchronization-delay { if-feature per-interface-timer-config; type uint16 { range 3..60; } units seconds; description "Sets the interval that the LDP waits before notifying the Interior Gateway Protocol (IGP) that label exchange is completed so that IGP can start advertising the normal metric for the link."; } } // interface-augment grouping peer-af-policy-container { description "LDP policy attribute container under peer address-family."; container label-policy { description "Label policy attributes."; container advertise { description "Label advertising policies."; leaf prefix-list { type prefix-list-ref; description "Applies the prefix list to outgoing label advertisements."; } } container accept { description "Label advertisement acceptance policies."; leaf prefix-list { type prefix-list-ref; description "Applies the prefix list to incoming label advertisements."; } } // accept } // label-policy } // peer-af-policy-container grouping peer-augment { description "Augmentation to each peer list entry."; leaf admin-down { type boolean; default false; description "'true' to disable the peer."; } uses ldp:graceful-restart-attributes-per-peer { if-feature per-peer-graceful-restart-config; } uses ldp:peer-attributes { if-feature per-peer-session-attributes-config; } } // peer-augment grouping peers-augment { description "Augmentation to peers container."; container session-downstream-on-demand { if-feature session-downstream-on-demand-config; description "Session downstream-on-demand attributes."; leaf enable { type boolean; description "'true' if session downstream-on-demand is enabled."; } leaf peer-list { type peer-list-ref; description "The name of a peer ACL."; } } } // peers-augment grouping policy-container { description "LDP policy attributes."; container label-policy { description "Label policy attributes."; container advertise { description "Label advertising policies."; container egress-explicit-null { description "Enables an egress router to advertise an explicit null label (value 0) in place of an implicit null label (value 3) to the penultimate hop router."; leaf enable { type boolean; description "'true' to enable explicit null."; } } leaf prefix-list { type prefix-list-ref; description "Applies the prefix list to outgoing label advertisements."; } } // advertise container accept { description "Label advertisement acceptance policies."; leaf prefix-list { type prefix-list-ref; description "Applies the prefix list to incoming label advertisements."; } } // accept container assign { if-feature policy-label-assignment-config; description "Label assignment policies"; container independent-mode { description "Independent label policy attributes."; leaf prefix-list { type prefix-list-ref; description "Assign labels according to certain prefixes."; } } // independent-mode container ordered-mode { if-feature policy-ordered-label-config; description "Ordered label policy attributes."; leaf egress-prefix-list { type prefix-list-ref; description "Assign labels according to certain prefixes for egress LSR."; } } // ordered-mode } // assign } // label-policy } // policy-container /* * Configuration and state data nodes */ // Forwarding nexthop augmentation to the global tree augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:global" { description "Graceful forwarding nexthop augmentation."; uses global-forwarding-nexthop-augment; } // global/address-families/ipv6 augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:global/ldp:address-families" { description "Global IPv6 augmentation."; container ipv6 { presence "Present if IPv6 is enabled, unless the 'enable' leaf is set to 'false'"; description "IPv6 address family."; leaf enable { type boolean; default true; description "'true' to enable the address family."; } uses policy-container; leaf transport-address { type inet:ipv6-address; mandatory true; description "The transport address advertised in LDP Hello messages."; } leaf label-distribution-controlmode { type enumeration { enum independent { description "Independent label distribution control."; } enum ordered { description "Ordered Label Distribution Control."; } } config false; description "Label distribution control mode."; reference "RFC5036: LDP Specification. Sec 2.6."; } // ipv6 bindings container bindings { config false; description "LDP address and label binding information."; list address { key "address"; description "List of address bindings."; leaf address { type inet:ipv6-address; description "Binding address."; } uses ldp:binding-address-state-attributes; } // binding-address list fec-label { key "fec"; description "List of label bindings."; leaf fec { type inet:ipv6-prefix; description "Prefix FEC."; } uses ldp:binding-label-state-attributes; } // fec-label } // bindings } // ipv6 } // discovery/interfaces/interface/address-families/ipv6 augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:discovery/ldp:interfaces/ldp:interface/" + "ldp:address-families" { description "Interface IPv6 augmentation."; container ipv6 { presence "Present if IPv6 is enabled, unless the 'enable' leaf is set to 'false'"; description "IPv6 address family."; leaf enable { type boolean; default true; description "Enable the address family on the interface."; } // ipv6 container hello-adjacencies { config false; description "Containing a list of hello adjacencies."; list hello-adjacency { key "adjacent-address"; config false; description "List of hello adjacencies."; leaf adjacent-address { type inet:ipv6-address; description "Neighbor address of the hello adjacency."; } uses ldp:adjacency-state-attributes; leaf peer { type leafref { path "../../../../../../../../ldp:peers/ldp:peer/" + "ldp:lsr-id"; } description "LDP peer from this adjacency."; } } // hello-adjacency } // hello-adjacencies } // ipv6 } // discovery/targeted/address-families/ipv6 augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:discovery/ldp:targeted/ldp:address-families" { description "Targeted discovery IPv6 augmentation."; container ipv6 { presence "Present if IPv6 is enabled."; description "IPv6 address family."; container hello-adjacencies { config false; description "Containing a list of hello adjacencies."; list hello-adjacency { key "local-address adjacent-address"; config false; description "List of hello adjacencies."; leaf local-address { type inet:ipv6-address; description "Local address of the hello adjacency."; } leaf adjacent-address { type inet:ipv6-address; description "Neighbor address of the hello adjacency."; } uses ldp:adjacency-state-attributes; leaf peer { type leafref { path "../../../../../../../ldp:peers/ldp:peer/" + "ldp:lsr-id"; } description "LDP peer from this adjacency."; } } // hello-adjacency } // hello-adjacencies list target { key "adjacent-address"; description "Targeted discovery params."; leaf adjacent-address { type inet:ipv6-address; description "Configures a remote LDP neighbor and enables extended LDP discovery of the specified neighbor."; } leaf enable { type boolean; description "Enable the target."; } leaf local-address { type inet:ipv6-address; description "The local address."; } } // target } // ipv6 } // /peers/peer/state/address-families/ipv6 augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:peers/ldp:peer/ldp:address-families" { description "Peer state IPv6 augmentation."; container ipv6 { presence "Present if IPv6 is enabled."; description "IPv6 address family."; container hello-adjacencies { config false; description "Containing a list of hello adjacencies."; list hello-adjacency { key "local-address adjacent-address"; description "List of hello adjacencies."; leaf local-address { type inet:ipv6-address; description "Local address of the hello adjacency."; } leaf adjacent-address { type inet:ipv6-address; description "Neighbor address of the hello adjacency."; } uses ldp:adjacency-state-attributes; leaf interface { type if:interface-ref; description "Interface for this adjacency."; } } // hello-adjacency } // hello-adjacencies } // ipv6 } /* * Configuration data and operational state data nodes */ augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:global" { description "Graceful restart augmentation."; uses global-augment; } augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:global/ldp:capability" { description "Capability augmentation."; uses capability-augment; } augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:global/ldp:graceful-restart" { description "Graceful restart augmentation."; uses graceful-restart-augment; } augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:global/ldp:address-families/ldp:ipv4" { description "Address family IPv4 augmentation."; uses address-family-ipv4-augment; } augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:discovery/ldp:interfaces/ldp:interface" { description "Interface augmentation."; uses interface-augment; } augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:discovery/ldp:interfaces/ldp:interface/" + "ldp:address-families/ldp:ipv4" { description "Interface address family IPv4 augmentation."; uses interface-address-family-ipv4-augment; } augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:discovery/ldp:interfaces/ldp:interface/" + "ldp:address-families/ldp-ext:ipv6" { description "Interface address family IPv6 augmentation."; uses interface-address-family-ipv6-augment; } augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:discovery/ldp:targeted/ldp:hello-accept" { description "Targeted discovery augmentation."; leaf neighbor-list { if-feature policy-targeted-discovery-config; type neighbor-list-ref; description "The name of a peer ACL."; } } augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:peers" { description "Peers augmentation."; uses peers-augment; } augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:peers/ldp:authentication/ldp:auth-type-selection" { description "Peers authentication augmentation."; case auth-key-chain { uses authentication-keychain-augment; } } augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:peers/ldp:peer" { description "Peer list entry augmentation."; uses peer-augment; } augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:peers/ldp:peer/ldp:authentication/" + "ldp:auth-type-selection" { description "Peer list entry authentication augmentation."; case auth-key-chain { uses authentication-keychain-augment; } } augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:peers/ldp:peer/ldp:address-families/ldp:ipv4" { description "Peer list entry IPv4 augmentation."; uses peer-af-policy-container; } augment "/rt:routing/rt:control-plane-protocols/ldp:mpls-ldp/" + "ldp:peers/ldp:peer/ldp:address-families/ldp-ext:ipv6" { description "Peer list entry IPv6 augmentation."; uses peer-af-policy-container; } }