yang/frr-isisd.yang

   1 module frr-isisd {
   2   yang-version 1.1;
   3   namespace "http://frrouting.org/yang/isisd";
   4   prefix frr-isisd;
   5
   6   import ietf-yang-types {
   7     prefix yang;
   8   }
   9
  10   import ietf-inet-types {
  11     prefix inet;
  12   }
  13
  14   import frr-interface {
  15     prefix frr-interface;
  16   }
  17
  18   import frr-vrf {
  19     prefix frr-vrf;
  20   }
  21
  22   import frr-route-map {
  23     prefix frr-route-map;
  24   }
  25
  26   import frr-route-types {
  27     prefix frr-route-types;
  28   }
  29
  30   organization
  31     "FRRouting";
  32   contact
  33     "FRR Users List: <mailto:frog@lists.frrouting.org> FRR Development
  34      List: <mailto:dev@lists.frrouting.org>";
  35   description
  36     "This module defines a model for managing FRR isisd daemon.
  37
  38      Copyright 2020 FRRouting
  39
  40      Redistribution and use in source and binary forms, with or without
  41      modification, are permitted provided that the following conditions
  42      are met:
  43
  44      1. Redistributions of source code must retain the above copyright notice,
  45      this list of conditions and the following disclaimer.
  46
  47      2. Redistributions in binary form must reproduce the above copyright
  48      notice, this list of conditions and the following disclaimer in the
  49      documentation and/or other materials provided with the distribution.
  50
  51      THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  52      \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  53      LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  54      A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  55      HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  56      SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  57      LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  58      DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  59      THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  60      (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  61      OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.";
  62
  63   revision 2020-04-06 {
  64     description
  65       "Group LSP timers in a container so that they can be displayed and
  66        configured together";
  67   }
  68   revision 2019-12-17 {
  69     description
  70       "Changed default area is-type to level-1-2";
  71   }
  72   revision 2019-09-09 {
  73     description
  74       "Changed interface references to use
  75        frr-interface:interface-ref typedef";
  76   }
  77   revision 2018-07-26 {
  78     description
  79       "Initial revision.";
  80     reference
  81       "ISO/IEC 10589:2002.";
  82   }
  83
  84   typedef level {
  85     type enumeration {
  86       enum "level-1" {
  87         value 1;
  88         description
  89           "This enum indicates L1-only capability.";
  90       }
  91       enum "level-2" {
  92         value 2;
  93         description
  94           "This enum indicates L2-only capability.";
  95       }
  96       enum "level-1-2" {
  97         value 3;
  98         description
  99           "This enum indicates capability for both levels.";
 100       }
 101     }
 102     description
 103       "This type defines IS-IS level of an object.";
 104   }
 105
 106   typedef extended-circuit-id {
 107     type uint32;
 108     description
 109       "This type defines the extended circuit ID
 110        associated with an interface.";
 111   }
 112
 113   typedef network-type {
 114     type enumeration {
 115       enum "unknown" {
 116         value 0;
 117         description
 118           "Unknown network type. Only valid as a state.";
 119       }
 120       enum "broadcast" {
 121         value 1;
 122         description
 123           "Broadcast circuit network-type.";
 124       }
 125       enum "point-to-point" {
 126         value 2;
 127         description
 128           "Point-to-point circuit network-type.";
 129       }
 130       enum "loopback" {
 131         value 3;
 132         description
 133           "Loopback circuit network-type. Only valid as a state.";
 134       }
 135     }
 136   }
 137
 138   typedef lsp-id {
 139     type string {
 140       pattern "[0-9A-Fa-f]{4}\\.[0-9A-Fa-f]{4}\\.[0-9A-Fa-f]{4}\\.[0-9][0-9]-[0-9][0-9]";
 141     }
 142     description
 143       "This type defines the IS-IS LSP ID format using a
 144        pattern, An example LSP ID is 0143.0438.AeF0.02-01";
 145   }
 146
 147   typedef snpa {
 148     type string {
 149       length "0 .. 20";
 150     }
 151     description
 152       "This type defines the Subnetwork Point
 153        of Attachment (SNPA) format.
 154        The SNPA should be encoded according to the rules
 155        specified for the particular type of subnetwork
 156        being used. As an example, for an ethernet subnetwork,
 157        the SNPA is encoded as a MAC address like
 158        '00aa.bbcc.ddee'.";
 159   }
 160
 161   typedef system-id {
 162     type string {
 163       pattern "[0-9A-Fa-f]{4}\\.[0-9A-Fa-f]{4}\\.[0-9A-Fa-f]{4}";
 164     }
 165     description
 166       "This type defines IS-IS system-id using a pattern,
 167        An example system-id is 0143.0438.AeF0";
 168   }
 169
 170   typedef net-address {
 171     type string {
 172       pattern "[a-fA-F0-9]{2}(\\.[a-fA-F0-9]{4}){3,9}\\.[a-fA-F0-9]{2}";
 173     }
 174     description
 175       "This type defines an OSI NET address using a pattern,
 176        An example net-address is 49.0123.6452.1972.00";
 177   }
 178
 179   typedef if-state-type {
 180     type enumeration {
 181       enum "up" {
 182         value 0;
 183         description
 184           "Up state.";
 185       }
 186       enum "down" {
 187         value 1;
 188         description
 189           "Down state";
 190       }
 191     }
 192     description
 193       "This type defines the state of an interface";
 194   }
 195
 196   typedef adj-state-type {
 197     type enumeration {
 198       enum "up" {
 199         value 0;
 200         description
 201           "State indicates the adjacency is established.";
 202       }
 203       enum "down" {
 204         value 1;
 205         description
 206           "State indicates the adjacency is NOT established.";
 207       }
 208       enum "init" {
 209         value 2;
 210         description
 211           "State indicates the adjacency is establishing.";
 212       }
 213       enum "failed" {
 214         value 3;
 215         description
 216           "State indicates the adjacency is failed.";
 217       }
 218     }
 219     description
 220       "This type defines states of an adjacency";
 221   }
 222
 223   typedef metric-style-type {
 224     type enumeration {
 225       enum "narrow" {
 226         value 0;
 227         description
 228           "This enum describes narrow metric style";
 229         reference
 230           "RFC1195";
 231       }
 232       enum "wide" {
 233         value 1;
 234         description
 235           "This enum describes wide metric style";
 236         reference
 237           "RFC5305";
 238       }
 239       enum "transition" {
 240         value 2;
 241         description
 242           "This enum describes transition metric style";
 243       }
 244     }
 245   }
 246
 247   typedef access-list-ref {
 248     type string;
 249   }
 250
 251   typedef prefix-list-ref {
 252     type string;
 253   }
 254
 255   grouping redistribute-attributes {
 256     description
 257       "Common optional attributes of any redistribute entry.";
 258     leaf route-map {
 259       type frr-route-map:route-map-ref;
 260       description
 261         "Applies the conditions of the specified route-map to routes that
 262          are redistributed into this routing instance.";
 263     }
 264
 265     leaf metric {
 266       type uint32 {
 267         range "0..16777215";
 268       }
 269       default "0";
 270       description
 271         "Metric used for the redistributed route. If 0,
 272          the default-metric attribute is used instead.";
 273     }
 274   }
 275
 276   grouping redistribute-default {
 277     description
 278       "Redistribution of default route within a level.";
 279     leaf always {
 280       type boolean;
 281       default "false";
 282       description
 283         "Always advertise default route.";
 284     }
 285
 286     uses redistribute-attributes;
 287   }
 288
 289   grouping isis-password {
 290     description
 291       "Authentication attributes or an IS-IS area or domain.";
 292     leaf password {
 293       type string {
 294         length "1..254";
 295       }
 296       mandatory true;
 297       description
 298         "Actual password.";
 299     }
 300
 301     leaf password-type {
 302       type enumeration {
 303         enum "clear" {
 304           value 1;
 305           description
 306             "Clear-text password type.";
 307         }
 308         enum "md5" {
 309           value 54;
 310           description
 311             "MD5 password type.";
 312         }
 313       }
 314       mandatory true;
 315       description
 316         "Type of password used.";
 317     }
 318   }
 319
 320   grouping isis-area-password {
 321     uses isis-password;
 322
 323     leaf authenticate-snp {
 324       type enumeration {
 325         enum "none" {
 326           value 0;
 327           description
 328             "No SNP authentication.";
 329         }
 330         enum "send-only" {
 331           value 1;
 332           description
 333             "Send authenticated PDUs but do not check on receiving.";
 334         }
 335         enum "validate" {
 336           value 3;
 337           description
 338             "Send authenticated PDUs and check on receiving.";
 339         }
 340       }
 341       default "none";
 342       description
 343         "SNP PDUs authentication.";
 344     }
 345   }
 346
 347   grouping global-config-lfa {
 348     container lfa {
 349       description
 350         "LFA configuration.";
 351
 352       leaf load-sharing {
 353         type boolean;
 354         default "true";
 355         description
 356           "Load share prefixes across multiple backups.";
 357       }
 358       leaf priority-limit {
 359         type enumeration {
 360           enum "critical" {
 361             value 0;
 362             description
 363               "Compute for critical priority prefixes only.";
 364           }
 365           enum "high" {
 366             value 1;
 367             description
 368               "Compute for critical & high priority prefixes.";
 369           }
 370           enum "medium" {
 371             value 2;
 372             description
 373               "Compute for critical, high & medium priority prefixes.";
 374           }
 375         }
 376         description
 377           "Limit backup computation up to the prefix priority.";
 378       }
 379       list tiebreaker {
 380         key "index";
 381         unique "type";
 382         description
 383           "Configure tiebreaker for multiple backups.";
 384         leaf index {
 385           type uint8 {
 386             range "1..255";
 387           }
 388           description
 389             "Preference order among tiebreakers.";
 390         }
 391         leaf type {
 392           type enumeration {
 393             enum "downstream" {
 394               value 0;
 395               description
 396                 "Prefer backup path via downstream node.";
 397             }
 398             enum "lowest-backup-metric" {
 399               value 1;
 400               description
 401                 "Prefer backup path with lowest total metric.";
 402             }
 403             enum "node-protecting" {
 404               value 2;
 405               description
 406                 "Prefer node protecting backup path.";
 407             }
 408           }
 409           mandatory true;
 410           description
 411             "Tiebreaker type.";
 412         }
 413       }
 414     }
 415   }
 416
 417   grouping global-config-remote-lfa {
 418     container remote-lfa {
 419       description
 420         "Remote LFA configuration.";
 421
 422       leaf prefix-list {
 423         type prefix-list-ref;
 424         description
 425           "Filter PQ node router ID based on prefix list.";
 426       }
 427     }
 428   }
 429
 430   grouping interface-config-lfa {
 431     container lfa {
 432       description
 433         "LFA configuration.";
 434       leaf enable {
 435         type boolean;
 436         default false;
 437         description
 438           "Enables LFA computation.";
 439       }
 440       leaf-list exclude-interface {
 441         type frr-interface:interface-ref;
 442         description
 443           "Exclude an interface from computation.";
 444       }
 445     }
 446   }
 447
 448   grouping interface-config-remote-lfa {
 449     container remote-lfa {
 450       description
 451         "Remote LFA configuration.";
 452
 453       leaf enable {
 454         type boolean;
 455         default false;
 456         description
 457           "Enables remote LFA computation using LDP tunnels.";
 458         must ". = 'false' or ../../lfa/enable = 'true'" {
 459           error-message
 460             "Remote LFA depends on classic LFA being configured in the interface.";
 461         }
 462
 463       }
 464       leaf maximum-metric {
 465         type uint32 {
 466           range "1..16777215";
 467         }
 468         description
 469           "Limit remote LFA node selection within the metric.";
 470       }
 471     }
 472   }
 473
 474   grouping interface-config-ti-lfa {
 475     container ti-lfa {
 476       description
 477         "TI-LFA configuration.";
 478       leaf enable {
 479         type boolean;
 480         default false;
 481         description
 482           "Enables TI-LFA computation.";
 483       }
 484       leaf node-protection {
 485         type boolean;
 486         must ". = 'false' or ../enable = 'true'";
 487         default false;
 488         description
 489           "Node protection is provided by the alternate.";
 490       }
 491     }
 492   }
 493
 494   grouping interface-config {
 495     description
 496       "Interface configuration grouping";
 497     leaf area-tag {
 498       type string;
 499       mandatory true;
 500       description
 501         "Area-tag associated to this circuit.";
 502     }
 503
 504     leaf vrf {
 505       type frr-vrf:vrf-ref;
 506       default "default";
 507       description
 508         "VRF NAME.";
 509     }
 510
 511     leaf ipv4-routing {
 512       type boolean;
 513       default "false";
 514       description
 515         "Routing IS-IS IPv4 traffic over this circuit.";
 516     }
 517
 518     leaf ipv6-routing {
 519       type boolean;
 520       default "false";
 521       description
 522         "Routing IS-IS IPv6 traffic over this circuit.";
 523     }
 524
 525     leaf circuit-type {
 526       type level;
 527       default "level-1-2";
 528       description
 529         "IS-type of this circuit.";
 530     }
 531
 532     container bfd-monitoring {
 533       leaf enabled {
 534         type boolean;
 535         default "false";
 536         description
 537           "Monitor IS-IS peers on this circuit.";
 538       }
 539       leaf profile {
 540         type string;
 541         description
 542           "Let BFD use a pre-configured profile.";
 543       }
 544     }
 545
 546     container csnp-interval {
 547       description
 548         "Complete Sequence Number PDU (CSNP) generation interval.";
 549       leaf level-1 {
 550         type uint16 {
 551           range "1..600";
 552         }
 553         units "seconds";
 554         default "10";
 555         description
 556           "CNSP interval for level-1";
 557       }
 558
 559       leaf level-2 {
 560         type uint16 {
 561           range "1..600";
 562         }
 563         units "seconds";
 564         default "10";
 565         description
 566           "CNSP interval for level-2";
 567       }
 568     }
 569
 570     container psnp-interval {
 571       description
 572         "Partial Sequence Number PDU (PSNP) generation interval.";
 573       leaf level-1 {
 574         type uint16 {
 575           range "1..120";
 576         }
 577         units "seconds";
 578         default "2";
 579         description
 580           "PNSP interval for level-1";
 581       }
 582
 583       leaf level-2 {
 584         type uint16 {
 585           range "1..120";
 586         }
 587         units "seconds";
 588         default "2";
 589         description
 590           "PCNSP interval for level-2";
 591       }
 592     }
 593
 594     container hello {
 595       description
 596         "Parameters related to IS-IS hello PDUs.";
 597       leaf padding {
 598         type boolean;
 599         default "true";
 600         description
 601           "Add padding to IS-IS hello PDUs.";
 602       }
 603
 604       container interval {
 605         description
 606           "Interval between consecutive hello messages.";
 607         leaf level-1 {
 608           type uint32 {
 609             range "1..600";
 610           }
 611           units "seconds";
 612           default "3";
 613           description
 614             "Holding time for level-1; interval will depend on multiplier.";
 615         }
 616
 617         leaf level-2 {
 618           type uint32 {
 619             range "1..600";
 620           }
 621           units "seconds";
 622           default "3";
 623           description
 624             "Holding time for level-2; interval will depend on multiplier.";
 625         }
 626       }
 627
 628       container multiplier {
 629         description
 630           "Multiplier for the hello messages holding time.";
 631         leaf level-1 {
 632           type uint16 {
 633             range "2..100";
 634           }
 635           default "10";
 636           description
 637             "Multiplier for the hello holding time.";
 638         }
 639
 640         leaf level-2 {
 641           type uint16 {
 642             range "2..100";
 643           }
 644           default "10";
 645           description
 646             "Multiplier for the hello holding time.";
 647         }
 648       }
 649     }
 650
 651     container metric {
 652       description
 653         "Default metric for this IS-IS circuit.";
 654       leaf level-1 {
 655         type uint32 {
 656           range "0..16777215";
 657         }
 658         must ". < 64 or /frr-isisd:isis/instance[area-tag = current()/../../area-tag]/metric-style = 'wide'";
 659         default "10";
 660         description
 661           "Default level-1 metric for this IS-IS circuit.";
 662       }
 663
 664       leaf level-2 {
 665         type uint32 {
 666           range "0..16777215";
 667         }
 668         must ". < 64 or /frr-isisd:isis/instance[area-tag = current()/../../area-tag]/metric-style = 'wide'";
 669         default "10";
 670         description
 671           "Default level-2 metric for this IS-IS circuit.";
 672       }
 673     }
 674
 675     container priority {
 676       description
 677         "Priority for Designated Router election.";
 678       leaf level-1 {
 679         type uint8 {
 680           range "0..127";
 681         }
 682         default "64";
 683         description
 684           "Level-1 priority for this IS-IS circuit.";
 685       }
 686
 687       leaf level-2 {
 688         type uint8 {
 689           range "0..127";
 690         }
 691         default "64";
 692         description
 693           "Level-2 priority for this IS-IS circuit.";
 694       }
 695     }
 696
 697     leaf network-type {
 698       type network-type;
 699       must "(. = \"point-to-point\") or (. = \"broadcast\")";
 700       default "broadcast";
 701       description
 702         "Explicitly configured type of IS-IS circuit (broadcast or point-to-point).";
 703     }
 704
 705     leaf passive {
 706       type boolean;
 707       default "false";
 708       description
 709         "Interface is in passive mode.";
 710     }
 711
 712     container password {
 713       presence "Present if a password is set for this IS interface.";
 714       uses isis-password;
 715     }
 716
 717     leaf disable-three-way-handshake {
 718       type boolean;
 719       default "false";
 720       description
 721         "Disables three-way handshake when creating new adjacencies.";
 722     }
 723
 724     container multi-topology {
 725       description
 726         "IS-IS topologies configured on this circuit.";
 727       leaf ipv4-unicast {
 728         type boolean;
 729         default "true";
 730         description
 731           "IPv4 unicast topology.";
 732       }
 733
 734       leaf ipv4-multicast {
 735         type boolean;
 736         default "true";
 737         description
 738           "IPv4 multicast topology.";
 739       }
 740
 741       leaf ipv4-management {
 742         type boolean;
 743         default "true";
 744         description
 745           "IPv4 management topology.";
 746       }
 747
 748       leaf ipv6-unicast {
 749         type boolean;
 750         default "true";
 751         description
 752           "IPv6 unicast topology.";
 753       }
 754
 755       leaf ipv6-multicast {
 756         type boolean;
 757         default "true";
 758         description
 759           "IPv6 multicast topology.";
 760       }
 761
 762       leaf ipv6-management {
 763         type boolean;
 764         default "true";
 765         description
 766           "IPv6 management topology.";
 767       }
 768
 769       leaf ipv6-dstsrc {
 770         type boolean;
 771         default "true";
 772         description
 773           "IPv6 destination-source topology.";
 774       }
 775     }
 776
 777     container mpls {
 778       description
 779         "Configuration of MPLS parameters";
 780       leaf ldp-sync {
 781         type boolean;
 782         default "true";
 783         description
 784           "Enable MPLS LDP-Sync functionality on this circuit.";
 785       }
 786       leaf holddown {
 787         type uint16 {
 788           range "0..10000";
 789       }
 790       units "seconds";
 791       description
 792         "Time to wait for LDP-Sync to occur before restoring interface metric.";
 793       }
 794     }
 795
 796     container fast-reroute {
 797       description
 798         "Interface IP Fast-reroute configuration.";
 799       container level-1 {
 800         description
 801           "Level-1 IP Fast-reroute configuration.";
 802         must "./lfa/enable = 'false' or ./ti-lfa/enable = 'false'" {
 803           error-message
 804             "Can't enable both classic LFA and TI-LFA in the same interface.";
 805         }
 806         uses interface-config-lfa;
 807         uses interface-config-remote-lfa;
 808         uses interface-config-ti-lfa;
 809       }
 810       container level-2 {
 811         description
 812           "Level-2 IP Fast-reroute configuration.";
 813         must "./lfa/enable = 'false' or ./ti-lfa/enable = 'false'" {
 814           error-message
 815             "Can't enable both classic LFA and TI-LFA in the same interface.";
 816         }
 817         uses interface-config-lfa;
 818         uses interface-config-remote-lfa;
 819         uses interface-config-ti-lfa;
 820       }
 821     }
 822   }
 823
 824   grouping adjacency-state {
 825     description
 826       "Adjacency state";
 827     container adjacencies {
 828       config false;
 829       description
 830         "This container lists the adjacencies of
 831          the local node.";
 832       list adjacency {
 833         description
 834           "List of operational adjacencies.";
 835         leaf neighbor-sys-type {
 836           type level;
 837           description
 838             "Level capability of neighboring system";
 839         }
 840
 841         leaf neighbor-sysid {
 842           type system-id;
 843           description
 844             "The system-id of the neighbor";
 845         }
 846
 847         leaf neighbor-extended-circuit-id {
 848           type extended-circuit-id;
 849           description
 850             "Circuit ID of the neighbor";
 851         }
 852
 853         leaf neighbor-snpa {
 854           type snpa;
 855           description
 856             "SNPA of the neighbor";
 857         }
 858
 859         leaf hold-timer {
 860           type uint16;
 861           units "seconds";
 862           description
 863             "The holding time in seconds for this
 864              adjacency. This value is based on
 865              received hello PDUs and the elapsed
 866              time since receipt.";
 867         }
 868
 869         leaf neighbor-priority {
 870           type uint8 {
 871             range "0 .. 127";
 872           }
 873           description
 874             "Priority of the neighboring IS for becoming
 875              the DIS.";
 876         }
 877
 878         leaf state {
 879           type adj-state-type;
 880           description
 881             "This leaf describes the state of the interface.";
 882         }
 883       }
 884     }
 885   }
 886
 887   grouping event-counters {
 888     description
 889       "Grouping for IS-IS interface event counters";
 890     container event-counters {
 891       config false;
 892       description
 893         "IS-IS interface event counters.";
 894       leaf adjacency-changes {
 895         type uint32;
 896         description
 897           "The number of times an adjacency state change has
 898            occurred on this interface.";
 899       }
 900
 901       leaf adjacency-number {
 902         type uint32;
 903         description
 904           "The number of adjacencies on this interface.";
 905       }
 906
 907       leaf init-fails {
 908         type uint32;
 909         description
 910           "The number of times initialization of this
 911            interface has failed. This counts events such
 912            as PPP NCP failures. Failures to form an
 913            adjacency are counted by adjacency-rejects.";
 914       }
 915
 916       leaf adjacency-rejects {
 917         type uint32;
 918         description
 919           "The number of times an adjacency has been
 920            rejected on this interface.";
 921       }
 922
 923       leaf id-len-mismatch {
 924         type uint32;
 925         description
 926           "The number of times an IS-IS PDU with an ID
 927            field length different from that for this
 928            system has been received on this interface.";
 929       }
 930
 931       leaf max-area-addresses-mismatch {
 932         type uint32;
 933         description
 934           "The number of times an IS-IS PDU has been
 935            received on this interface with the
 936            max area address field differing from that of
 937            this system.";
 938       }
 939
 940       leaf authentication-type-fails {
 941         type uint32;
 942         description
 943           "Number of authentication type mismatches.";
 944       }
 945
 946       leaf authentication-fails {
 947         type uint32;
 948         description
 949           "Number of authentication key failures.";
 950       }
 951     }
 952   }
 953
 954   grouping interface-state {
 955     description
 956       "IS-IS interface operational state.";
 957     uses adjacency-state;
 958
 959     uses event-counters;
 960   }
 961
 962   grouping notification-instance-hdr {
 963     description
 964       "Instance specific IS-IS notification data grouping";
 965     leaf routing-instance {
 966       type string;
 967       description
 968         "Name of the routing-instance instance.";
 969     }
 970
 971     leaf routing-protocol-name {
 972       type string;
 973       description
 974         "Name of the IS-IS instance.";
 975     }
 976
 977     leaf isis-level {
 978       type level;
 979       description
 980         "IS-IS level of the instance.";
 981     }
 982   }
 983
 984   grouping notification-interface-hdr {
 985     description
 986       "Interface specific IS-IS notification data grouping";
 987     leaf interface-name {
 988       type frr-interface:interface-ref;
 989       description
 990         "IS-IS interface name";
 991     }
 992
 993     leaf interface-level {
 994       type level;
 995       description
 996         "IS-IS level of the interface.";
 997     }
 998
 999     leaf extended-circuit-id {
1000       type extended-circuit-id;
1001       description
1002         "Eextended circuit-id of the interface.";
1003     }
1004   }
1005
1006   container isis {
1007     description
1008       "Configuration of the IS-IS routing daemon.";
1009     list instance {
1010       key "area-tag vrf";
1011       description
1012         "IS-IS routing instance.";
1013       leaf area-tag {
1014         type string;
1015         description
1016           "Area-tag associated to this routing instance.";
1017       }
1018
1019       leaf vrf {
1020         type frr-vrf:vrf-ref;
1021         description
1022           "VRF NAME.";
1023       }
1024
1025       leaf is-type {
1026         type level;
1027         default "level-1-2";
1028         description
1029           "Level of the IS-IS routing instance (OSI only).";
1030       }
1031
1032       leaf-list area-address {
1033         type net-address;
1034         max-elements 3;
1035         description
1036           "List of OSI NET addresses for this protocol instance.";
1037       }
1038
1039       leaf dynamic-hostname {
1040         type boolean;
1041         default "true";
1042         description
1043           "Dynamic hostname support for IS-IS.";
1044       }
1045
1046       leaf attach-send {
1047         type boolean;
1048         default "true";
1049         description
1050           "If true, attached bits are sent in LSP if L1/L2 router for inter-area traffic.";
1051       }
1052
1053       leaf attach-receive-ignore {
1054         type boolean;
1055         default "false";
1056         description
1057           "If false, attached bits received in LSP, cause default route add, if L1 router for inter-area traffic.";
1058       }
1059
1060       leaf attached {
1061         type boolean;
1062         default "false";
1063         status deprecated;
1064         description
1065           "If true, identify as L1/L2 router for inter-area traffic.";
1066       }
1067
1068       leaf overload {
1069         type boolean;
1070         default "false";
1071         description
1072           "If true, avoid any transit traffic.";
1073       }
1074
1075       leaf metric-style {
1076         type metric-style-type;
1077         must ". = 'wide' or count(../multi-topology/*) = 0";
1078         default "wide";
1079         description
1080           "Define the style of TLVs metric supported.";
1081       }
1082
1083       leaf purge-originator {
1084         type boolean;
1085         default "false";
1086         description
1087           "Use the RFC 6232 purge-originator.";
1088         reference
1089           "RFC6232";
1090       }
1091
1092       container lsp {
1093         description
1094           "Configuration of Link-State Packets (LSP) parameters";
1095         leaf mtu {
1096           type uint16 {
1097             range "128..4352";
1098           }
1099           default "1497";
1100           description
1101             "MTU of an LSP.";
1102         }
1103
1104         container timers {
1105           description
1106             "LSP-related timers";
1107           container level-1 {
1108             description
1109               "Level-1 LSP-related timers";
1110             leaf refresh-interval {
1111               type uint16;
1112               units "seconds";
1113               default "900";
1114               description
1115                 "LSP refresh interval for level-1.";
1116             }
1117
1118             leaf maximum-lifetime {
1119               type uint16 {
1120                 range "350..65535";
1121               }
1122               units "seconds";
1123               must ". >= ../refresh-interval + 300";
1124               default "1200";
1125               description
1126                 "Maximum LSP lifetime for level-1.";
1127             }
1128
1129             leaf generation-interval {
1130               type uint16 {
1131                 range "1..120";
1132               }
1133               units "seconds";
1134               must ". < ../refresh-interval";
1135               default "30";
1136               description
1137                 "Minimum time allowed before level-1 LSP retransmissions.";
1138             }
1139           }
1140
1141           container level-2 {
1142             description
1143               "Level-2 LSP-related timers";
1144             leaf refresh-interval {
1145               type uint16;
1146               units "seconds";
1147               default "900";
1148               description
1149                 "LSP refresh interval for level-2.";
1150             }
1151
1152             leaf maximum-lifetime {
1153               type uint16 {
1154                 range "350..65535";
1155               }
1156               units "seconds";
1157               must ". >= ../refresh-interval + 300";
1158               default "1200";
1159               description
1160                 "Maximum LSP lifetime for level-2.";
1161             }
1162
1163             leaf generation-interval {
1164               type uint16 {
1165                 range "1..120";
1166               }
1167               units "seconds";
1168               must ". < ../refresh-interval";
1169               default "30";
1170               description
1171                 "Minimum time allowed before level-2 LSP retransmissions.";
1172             }
1173           }
1174         }
1175       }
1176
1177       container spf {
1178         description
1179           "Parameters related to the Shortest Path First algorithm.";
1180         container ietf-backoff-delay {
1181           presence "Present if IETF SPF back-off delay is enabled.";
1182           description
1183             "SPF back-off delay algorithm parameters (see RFC 8405).";
1184           leaf init-delay {
1185             type uint16 {
1186               range "0..60000";
1187             }
1188             units "msec";
1189             mandatory true;
1190             description
1191               "Delay used while in QUIET state";
1192           }
1193
1194           leaf short-delay {
1195             type uint16 {
1196               range "0..60000";
1197             }
1198             units "msec";
1199             mandatory true;
1200             description
1201               "Delay used while in SHORT_WAIT state";
1202           }
1203
1204           leaf long-delay {
1205             type uint16 {
1206               range "0..60000";
1207             }
1208             units "msec";
1209             mandatory true;
1210             description
1211               "Delay used while in LONG_WAIT state";
1212           }
1213
1214           leaf hold-down {
1215             type uint16 {
1216               range "0..60000";
1217             }
1218             units "msec";
1219             mandatory true;
1220             description
1221               "Time with no received IGP events before considering IGP stable";
1222           }
1223
1224           leaf time-to-learn {
1225             type uint16 {
1226               range "0..60000";
1227             }
1228             units "msec";
1229             mandatory true;
1230             description
1231               "Maximum duration needed to learn all the events related to a
1232                single failure";
1233           }
1234         }
1235
1236         container minimum-interval {
1237           description
1238             "Minimum interval between consecutive executions of the
1239              SPF algorithm.";
1240           leaf level-1 {
1241             type uint16 {
1242               range "1..120";
1243             }
1244             units "seconds";
1245             default "1";
1246             description
1247               "Minimum time between consecutive level-1 SPFs.";
1248           }
1249
1250           leaf level-2 {
1251             type uint16 {
1252               range "1..120";
1253             }
1254             units "seconds";
1255             default "1";
1256             description
1257               "Minimum time between consecutive level-2 SPFs.";
1258           }
1259         }
1260
1261         container prefix-priorities {
1262           description
1263             "SPF Prefix Priority configuration";
1264
1265           container critical {
1266             description
1267               "Critical prefix priority";
1268             leaf access-list-name {
1269               type access-list-ref;
1270               description
1271                 "Access List to determine prefixes for
1272                  this priority";
1273             }
1274           }
1275           container high {
1276             description
1277               "High prefix priority";
1278             leaf access-list-name {
1279               type access-list-ref;
1280               description
1281                 "Access List to determine prefixes for
1282                  this priority";
1283             }
1284           }
1285           container medium {
1286             description
1287               "Medium prefix priority";
1288             leaf access-list-name {
1289               type access-list-ref;
1290               description
1291                 "Access List to determine prefixes for
1292                  this priority";
1293             }
1294           }
1295         }
1296       }
1297
1298       container area-password {
1299         presence "Present if authentication is required for IS level-1.";
1300         description
1301           "Authentication password for an IS-IS area.";
1302         uses isis-area-password;
1303       }
1304
1305       container domain-password {
1306         presence "Present if authentication is required for IS level-2.";
1307         description
1308           "Authentication password for an IS-IS domain.";
1309         uses isis-area-password;
1310       }
1311
1312       container default-information-originate {
1313         description
1314           "Distribution of default information.";
1315         list ipv4 {
1316           key "level";
1317           description
1318             "Distribute default route for IPv4.";
1319           leaf level {
1320             type level;
1321             must "(. != \"level-1-2\") and ((../../../is-type = \"level-1-2\") or (. = ../../../is-type))";
1322           }
1323
1324           uses redistribute-default;
1325         }
1326
1327         list ipv6 {
1328           key "level";
1329           description
1330             "Distribute default route for IPv6.";
1331           leaf level {
1332             type level;
1333             must "(. != \"level-1-2\") and ((../../../is-type = \"level-1-2\") or (. = ../../../is-type))";
1334           }
1335
1336           uses redistribute-default;
1337         }
1338       }
1339
1340       container redistribute {
1341         description
1342           "Redistributes routes learned from other routing protocols.";
1343         list ipv4 {
1344           key "protocol level";
1345           description
1346             "IPv4 route redistribution.";
1347           leaf protocol {
1348             type frr-route-types:frr-route-types-v4;
1349             must ". != \"isis\"";
1350             description
1351               "Originating routing protocol for the IPv4 routes.";
1352           }
1353
1354           leaf level {
1355             type level;
1356             must "(. != \"level-1-2\") and ((../../../is-type = \"level-1-2\") or (. = ../../../is-type))";
1357             description
1358               "IS-IS level into which the routes should be redistributed.";
1359           }
1360
1361           uses redistribute-attributes;
1362         }
1363
1364         list ipv6 {
1365           key "protocol level";
1366           description
1367             "IPv6 route redistribution.";
1368           leaf protocol {
1369             type frr-route-types:frr-route-types-v6;
1370             must ". != \"isis\"";
1371             description
1372               "Originating routing protocol for the IPv6 routes.";
1373           }
1374
1375           leaf level {
1376             type level;
1377             must "(. != \"level-1-2\") and ((../../../is-type = \"level-1-2\") or (. = ../../../is-type))";
1378             description
1379               "IS-IS level into which the routes should be redistributed.";
1380           }
1381
1382           uses redistribute-attributes;
1383         }
1384       }
1385
1386       container multi-topology {
1387         description
1388           "IS-IS topologies configured for this area.";
1389         container ipv4-multicast {
1390           presence "Present if a separate IPv4-multicast topology is configured for this area.";
1391           description
1392             "IPv4 multicast topology.";
1393           leaf overload {
1394             type boolean;
1395             default "false";
1396           }
1397         }
1398
1399         container ipv4-management {
1400           presence "Present if a separate IPv4-management topology is configured for this area.";
1401           description
1402             "IPv4 management topology.";
1403           leaf overload {
1404             type boolean;
1405             default "false";
1406           }
1407         }
1408
1409         container ipv6-unicast {
1410           presence "Present if a separate IPv6-unicast topology is configured for this area.";
1411           description
1412             "IPv6 unicast topology.";
1413           leaf overload {
1414             type boolean;
1415             default "false";
1416           }
1417         }
1418
1419         container ipv6-multicast {
1420           presence "Present if a separate IPv6-multicast topology is configured for this area.";
1421           description
1422             "IPv6 multicast topology.";
1423           leaf overload {
1424             type boolean;
1425             default "false";
1426           }
1427         }
1428
1429         container ipv6-management {
1430           presence "Present if a separate IPv6-management topology is configured for this area.";
1431           description
1432             "IPv6 management topology.";
1433           leaf overload {
1434             type boolean;
1435             default "false";
1436           }
1437         }
1438
1439         container ipv6-dstsrc {
1440           presence "Present if a separate IPv6 destination-source topology is configured for this area.";
1441           description
1442             "IPv6 destination-source topology.";
1443           leaf overload {
1444             type boolean;
1445             default "false";
1446           }
1447         }
1448       }
1449
1450       container fast-reroute {
1451         description
1452           "IP Fast-reroute configuration.";
1453         container level-1 {
1454           description
1455             "Level-1 IP Fast-reroute configuration.";
1456           uses global-config-lfa;
1457           uses global-config-remote-lfa;
1458         }
1459         container level-2 {
1460           description
1461             "Level-2 IP Fast-reroute configuration.";
1462           uses global-config-lfa;
1463           uses global-config-remote-lfa;
1464         }
1465       }
1466
1467       leaf log-adjacency-changes {
1468         type boolean;
1469         default "false";
1470         description
1471           "Log changes to the IS-IS adjacencies in this area.";
1472       }
1473
1474       container mpls-te {
1475         presence "Present if MPLS-TE is enabled.";
1476         description
1477           "Enable MPLS-TE functionality.";
1478         leaf router-address {
1479           type inet:ipv4-address;
1480           description
1481             "Stable IP address of the advertising router.";
1482         }
1483       }
1484
1485       container segment-routing {
1486         description
1487           "Segment Routing global configuration.";
1488         leaf enabled {
1489           type boolean;
1490           default "false";
1491           description
1492             "Enables segment-routing protocol extensions.";
1493         }
1494         container srgb {
1495           description
1496             "Global blocks to be advertised.";
1497           must "./upper-bound > ./lower-bound";
1498           leaf lower-bound {
1499               type uint32;
1500               default "16000";
1501               description
1502                 "Lower value in the label range.";
1503           }
1504           leaf upper-bound {
1505               type uint32;
1506               default "23999";
1507               description
1508                 "Upper value in the label range.";
1509           }
1510         }
1511         container srlb {
1512           description
1513             "Local blocks to be advertised.";
1514           must "./upper-bound > ./lower-bound";
1515           leaf lower-bound {
1516               type uint32;
1517               default "15000";
1518               description
1519                 "Lower value in the label range.";
1520           }
1521           leaf upper-bound {
1522               type uint32;
1523               default "15999";
1524               description
1525                 "Upper value in the label range.";
1526           }
1527         }
1528         container msd {
1529           description
1530             "MSD configuration.";
1531           leaf node-msd {
1532             type uint8;
1533             description
1534               "Node MSD is the lowest MSD supported by the node.";
1535           }
1536         }
1537         container prefix-sid-map {
1538           description
1539             "Prefix SID configuration.";
1540           list prefix-sid {
1541             key "prefix";
1542             unique "sid-value-type sid-value";
1543             description
1544               "List of prefix SID mapped to IPv4/IPv6
1545                local prefixes.";
1546             leaf prefix {
1547               type inet:ip-prefix;
1548               description
1549                 "Connected prefix sid.";
1550             }
1551             leaf sid-value-type {
1552               type enumeration {
1553                 enum "index" {
1554                   value 0;
1555                   description
1556                     "The value will be interpreted as an index.";
1557                 }
1558                 enum "absolute" {
1559                   value 1;
1560                   description
1561                     "The value will become interpreted as an absolute
1562                      value.";
1563                 }
1564               }
1565               default "index";
1566               description
1567                 "This leaf defines how value must be interpreted.";
1568             }
1569             leaf sid-value {
1570               type uint32;
1571               mandatory true;
1572               description
1573                 "Value associated with prefix. The value must be
1574                  interpreted in the context of sid-value-type.";
1575             }
1576             leaf last-hop-behavior {
1577               type enumeration {
1578                 enum "explicit-null" {
1579                   value 0;
1580                   description
1581                     "Use explicit-null for the SID.";
1582                 }
1583                 enum "no-php" {
1584                   value 1;
1585                   description
1586                     "Do not use Penultimate Hop Popping (PHP)
1587                      for the SID.";
1588                 }
1589                 enum "php" {
1590                   value 2;
1591                   description
1592                     "Use PHP for the SID.";
1593                 }
1594               }
1595               default "php";
1596               description
1597                 "Configure last hop behavior.";
1598             }
1599             leaf n-flag-clear {
1600               type boolean;
1601               default "false";
1602               description
1603                 "Not a node SID";
1604             }
1605           }
1606         }
1607       }
1608
1609       container mpls {
1610         description
1611           "Configuration of MPLS parameters";
1612         container ldp-sync {
1613           presence "Present if MPLS LDP-Sync is enabled.";
1614           description
1615             "Enable MPLS LDP-Sync functionality.";
1616           leaf holddown {
1617             type uint16 {
1618               range "0..10000";
1619             }
1620             units "seconds";
1621             default "0";
1622             description
1623               "Time to wait for LDP-Sync to occur before restoring interface metric.";
1624           }
1625         }
1626       }
1627
1628     }
1629   }
1630
1631   augment "/frr-interface:lib/frr-interface:interface" {
1632     description
1633       "Extends interface model with IS-IS related parameters.";
1634     container isis {
1635       presence "Present if an IS-IS circuit is defined for this interface.";
1636       description
1637         "IS-IS interface parameters.";
1638       uses interface-config;
1639     }
1640   }
1641
1642   augment "/frr-interface:lib/frr-interface:interface/frr-interface:state" {
1643     description
1644       "Extends interface model with IS-IS operational data.";
1645     container isis {
1646       presence "Present if an IS-IS circuit is defined for this interface.";
1647       description
1648         "IS-IS interface operational data.";
1649
1650       uses interface-state;
1651     }
1652   }
1653
1654   notification database-overload {
1655     description
1656       "This notification is sent when an IS-IS instance
1657        overload state changes.";
1658     uses notification-instance-hdr;
1659
1660     leaf overload {
1661       type enumeration {
1662         enum "off" {
1663           value 0;
1664           description
1665             "Indicates IS-IS instance has left overload state";
1666         }
1667         enum "on" {
1668           value 1;
1669           description
1670             "Indicates IS-IS instance has entered overload state";
1671         }
1672       }
1673       description
1674         "New overload state of the IS-IS instance";
1675     }
1676   }
1677
1678   notification lsp-too-large {
1679     description
1680       "This notification is sent when we attempt to propagate
1681        an LSP that is larger than the dataLinkBlockSize for the
1682        circuit.  The notification generation must be throttled
1683        with at least 5 seconds between successive
1684        notifications.";
1685     uses notification-instance-hdr;
1686
1687     uses notification-interface-hdr;
1688
1689     leaf pdu-size {
1690       type uint32;
1691       description
1692         "Size of the LSP PDU";
1693     }
1694
1695     leaf lsp-id {
1696       type lsp-id;
1697       description
1698         "LSP ID";
1699     }
1700   }
1701
1702   notification if-state-change {
1703     description
1704       "This notification is sent when an interface
1705        state change is detected.";
1706     uses notification-instance-hdr;
1707
1708     uses notification-interface-hdr;
1709
1710     leaf state {
1711       type if-state-type;
1712       description
1713         "Interface state.";
1714     }
1715   }
1716
1717   notification corrupted-lsp-detected {
1718     description
1719       "This notification is sent when we find that
1720        an LSP that was stored in memory has become
1721        corrupted.";
1722     uses notification-instance-hdr;
1723
1724     leaf lsp-id {
1725       type lsp-id;
1726       description
1727         "LSP ID";
1728     }
1729   }
1730
1731   notification attempt-to-exceed-max-sequence {
1732     description
1733       "This notification is sent when the system
1734        wraps the 32-bit sequence counter of an LSP.";
1735     uses notification-instance-hdr;
1736
1737     leaf lsp-id {
1738       type lsp-id;
1739       description
1740         "LSP ID";
1741     }
1742   }
1743
1744   notification id-len-mismatch {
1745     description
1746       "This notification is sent when we receive a PDU
1747        with a different value for the System ID length.
1748        The notification generation must be throttled
1749        with at least 5 seconds between successive
1750        notifications.";
1751     uses notification-instance-hdr;
1752
1753     uses notification-interface-hdr;
1754
1755     leaf pdu-field-len {
1756       type uint8;
1757       description
1758         "Size of the ID length in the received PDU";
1759     }
1760
1761     leaf raw-pdu {
1762       type binary;
1763       description
1764         "Received raw PDU.";
1765     }
1766   }
1767
1768   notification max-area-addresses-mismatch {
1769     description
1770       "This notification is sent when we receive a PDU
1771        with a different value for the Maximum Area Addresses.
1772        The notification generation must be throttled
1773        with at least 5 seconds between successive
1774        notifications.";
1775     uses notification-instance-hdr;
1776
1777     uses notification-interface-hdr;
1778
1779     leaf max-area-addresses {
1780       type uint8;
1781       description
1782         "Received number of supported areas";
1783     }
1784
1785     leaf raw-pdu {
1786       type binary;
1787       description
1788         "Received raw PDU.";
1789     }
1790   }
1791
1792   notification own-lsp-purge {
1793     description
1794       "This notification is sent when the system receives
1795        a PDU with its own system ID and zero age.";
1796     uses notification-instance-hdr;
1797
1798     uses notification-interface-hdr;
1799
1800     leaf lsp-id {
1801       type lsp-id;
1802       description
1803         "LSP ID";
1804     }
1805   }
1806
1807   notification sequence-number-skipped {
1808     description
1809       "This notification is sent when the system receives a
1810        PDU with its own system ID and different contents. The
1811        system has to reoriginate the LSP with a higher sequence
1812        number.";
1813     uses notification-instance-hdr;
1814
1815     uses notification-interface-hdr;
1816
1817     leaf lsp-id {
1818       type lsp-id;
1819       description
1820         "LSP ID";
1821     }
1822   }
1823
1824   notification authentication-type-failure {
1825     description
1826       "This notification is sent when the system receives a
1827        PDU with the wrong authentication type field.
1828        The notification generation must be throttled
1829        with at least 5 seconds between successive
1830        notifications.";
1831     uses notification-instance-hdr;
1832
1833     uses notification-interface-hdr;
1834
1835     leaf raw-pdu {
1836       type binary;
1837       description
1838         "Received raw PDU.";
1839     }
1840   }
1841
1842   notification authentication-failure {
1843     description
1844       "This notification is sent when the system receives
1845        a PDU with the wrong authentication information.
1846        The notification generation must be throttled with
1847        with at least 5 seconds between successive
1848        notifications.";
1849     uses notification-instance-hdr;
1850
1851     uses notification-interface-hdr;
1852
1853     leaf raw-pdu {
1854       type binary;
1855       description
1856         "Received raw PDU.";
1857     }
1858   }
1859
1860   notification version-skew {
1861     description
1862       "This notification is sent when the system receives a
1863        PDU with a different protocol version number.
1864        The notification generation must be throttled
1865        with at least 5 seconds between successive
1866        notifications.";
1867     uses notification-instance-hdr;
1868
1869     uses notification-interface-hdr;
1870
1871     leaf protocol-version {
1872       type uint8;
1873       description
1874         "Protocol version received in the PDU.";
1875     }
1876
1877     leaf raw-pdu {
1878       type binary;
1879       description
1880         "Received raw PDU.";
1881     }
1882   }
1883
1884   notification area-mismatch {
1885     description
1886       "This notification is sent when the system receives a
1887        Hello PDU from an IS that does not share any area
1888        address. The notification generation must be throttled
1889        with at least 5 seconds between successive
1890        notifications.";
1891     uses notification-instance-hdr;
1892
1893     uses notification-interface-hdr;
1894
1895     leaf raw-pdu {
1896       type binary;
1897       description
1898         "Received raw PDU.";
1899     }
1900   }
1901
1902   notification rejected-adjacency {
1903     description
1904       "This notification is sent when the system receives a
1905        Hello PDU from an IS but does not establish an adjacency
1906        for some reason. The notification generation must be
1907        throttled with at least 5 seconds between successive
1908        notifications.";
1909     uses notification-instance-hdr;
1910
1911     uses notification-interface-hdr;
1912
1913     leaf raw-pdu {
1914       type binary;
1915       description
1916         "Received raw PDU.";
1917     }
1918
1919     leaf reason {
1920       type string;
1921       description
1922         "The system may provide a reason to reject the
1923          adjacency. If the reason is not available,
1924          an empty string will be returned.";
1925     }
1926   }
1927
1928   notification lsp-error-detected {
1929     description
1930       "This notification is sent when the system  receives an
1931        LSP with a parse error. The notification generation must
1932        be throttled with at least 5 seconds between successive
1933        notifications.";
1934     uses notification-instance-hdr;
1935
1936     uses notification-interface-hdr;
1937
1938     leaf lsp-id {
1939       type lsp-id;
1940       description
1941         "LSP ID.";
1942     }
1943
1944     leaf raw-pdu {
1945       type binary;
1946       description
1947         "Received raw PDU.";
1948     }
1949
1950     leaf error-offset {
1951       type uint32;
1952       description
1953         "If the problem is a malformed TLV, the error-offset
1954          points to the start of the TLV. If the problem is with
1955          the LSP header, the error-offset points to the errant
1956          byte";
1957     }
1958
1959     leaf tlv-type {
1960       type uint8;
1961       description
1962         "If the problem is a malformed TLV, the tlv-type is set
1963          to the type value of the suspicious TLV. Otherwise,
1964          this leaf is not present.";
1965     }
1966   }
1967
1968   notification adjacency-state-change {
1969     description
1970       "This notification is sent when an IS-IS adjacency
1971        moves to Up state or to Down state.";
1972     uses notification-instance-hdr;
1973
1974     uses notification-interface-hdr;
1975
1976     leaf neighbor {
1977       type string;
1978       description
1979         "Name of the neighbor. If the name of the neighbor is
1980          not available, it is not returned.";
1981     }
1982
1983     leaf neighbor-system-id {
1984       type system-id;
1985       description
1986         "Neighbor system-id";
1987     }
1988
1989     leaf state {
1990       type adj-state-type;
1991       description
1992         "New state of the IS-IS adjacency.";
1993     }
1994
1995     leaf reason {
1996       type string;
1997       description
1998         "If the adjacency is going to DOWN,  this leaf provides
1999          a reason for the adjacency going down. The reason is
2000          provided as a text. If the adjacency is going to UP, no
2001          reason is provided.";
2002     }
2003   }
2004
2005   notification lsp-received {
2006     description
2007       "This notification is sent when an LSP is received.
2008        The notification generation must be throttled with at
2009        least 5 seconds between successive notifications.";
2010     uses notification-instance-hdr;
2011
2012     uses notification-interface-hdr;
2013
2014     leaf lsp-id {
2015       type lsp-id;
2016       description
2017         "LSP ID";
2018     }
2019
2020     leaf sequence {
2021       type uint32;
2022       description
2023         "Sequence number of the received LSP.";
2024     }
2025
2026     leaf received-timestamp {
2027       type yang:timestamp;
2028       description
2029         "Timestamp when the LSP was received.";
2030     }
2031
2032     leaf neighbor-system-id {
2033       type system-id;
2034       description
2035         "Neighbor system-id of LSP sender";
2036     }
2037   }
2038
2039   notification lsp-generation {
2040     description
2041       "This notification is sent when an LSP is regenerated.
2042        The notification generation must be throttled with at
2043        least 5 seconds between successive notifications.";
2044     uses notification-instance-hdr;
2045
2046     leaf lsp-id {
2047       type lsp-id;
2048       description
2049         "LSP ID";
2050     }
2051
2052     leaf sequence {
2053       type uint32;
2054       description
2055         "Sequence number of the received LSP.";
2056     }
2057
2058     leaf send-timestamp {
2059       type yang:timestamp;
2060       description
2061         "Timestamp when our LSP was regenerated.";
2062     }
2063   }
2064 }