ospf6d/ospf6_top.c

   1 /*
   2  * Copyright (C) 2003 Yasuhiro Ohara
   3  *
   4  * This file is part of GNU Zebra.
   5  *
   6  * GNU Zebra is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2, or (at your option) any
   9  * later version.
  10  *
  11  * GNU Zebra is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with GNU Zebra; see the file COPYING.  If not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21
  22 #include <zebra.h>
  23
  24 #include "log.h"
  25 #include "memory.h"
  26 #include "vty.h"
  27 #include "linklist.h"
  28 #include "prefix.h"
  29 #include "table.h"
  30 #include "thread.h"
  31 #include "command.h"
  32
  33 #include "ospf6_proto.h"
  34 #include "ospf6_message.h"
  35 #include "ospf6_lsa.h"
  36 #include "ospf6_lsdb.h"
  37 #include "ospf6_route.h"
  38 #include "ospf6_zebra.h"
  39
  40 #include "ospf6_top.h"
  41 #include "ospf6_area.h"
  42 #include "ospf6_interface.h"
  43 #include "ospf6_neighbor.h"
  44
  45 #include "ospf6_flood.h"
  46 #include "ospf6_asbr.h"
  47 #include "ospf6_abr.h"
  48 #include "ospf6_intra.h"
  49 #include "ospf6d.h"
  50
  51 /* global ospf6d variable */
  52 struct ospf6 *ospf6;
  53
  54 static void
  55 ospf6_top_lsdb_hook_add (struct ospf6_lsa *lsa)
  56 {
  57   switch (ntohs (lsa->header->type))
  58     {
  59       case OSPF6_LSTYPE_AS_EXTERNAL:
  60         ospf6_asbr_lsa_add (lsa);
  61         break;
  62
  63       default:
  64         break;
  65     }
  66 }
  67
  68 static void
  69 ospf6_top_lsdb_hook_remove (struct ospf6_lsa *lsa)
  70 {
  71   switch (ntohs (lsa->header->type))
  72     {
  73       case OSPF6_LSTYPE_AS_EXTERNAL:
  74         ospf6_asbr_lsa_remove (lsa);
  75         break;
  76
  77       default:
  78         break;
  79     }
  80 }
  81
  82 static void
  83 ospf6_top_route_hook_add (struct ospf6_route *route)
  84 {
  85   ospf6_abr_originate_summary (route);
  86   ospf6_zebra_route_update_add (route);
  87 }
  88
  89 static void
  90 ospf6_top_route_hook_remove (struct ospf6_route *route)
  91 {
  92   ospf6_abr_originate_summary (route);
  93   ospf6_zebra_route_update_remove (route);
  94 }
  95
  96 static void
  97 ospf6_top_brouter_hook_add (struct ospf6_route *route)
  98 {
  99   ospf6_abr_examin_brouter (ADV_ROUTER_IN_PREFIX (&route->prefix));
 100   ospf6_asbr_lsentry_add (route);
 101   ospf6_abr_originate_summary (route);
 102 }
 103
 104 static void
 105 ospf6_top_brouter_hook_remove (struct ospf6_route *route)
 106 {
 107   ospf6_abr_examin_brouter (ADV_ROUTER_IN_PREFIX (&route->prefix));
 108   ospf6_asbr_lsentry_remove (route);
 109   ospf6_abr_originate_summary (route);
 110 }
 111
 112 static struct ospf6 *
 113 ospf6_create (void)
 114 {
 115   struct ospf6 *o;
 116
 117   o = XCALLOC (MTYPE_OSPF6_TOP, sizeof (struct ospf6));
 118
 119   /* initialize */
 120   quagga_gettime (QUAGGA_CLK_MONOTONIC, &o->starttime);
 121   o->area_list = list_new ();
 122   o->area_list->cmp = ospf6_area_cmp;
 123   o->lsdb = ospf6_lsdb_create (o);
 124   o->lsdb_self = ospf6_lsdb_create (o);
 125   o->lsdb->hook_add = ospf6_top_lsdb_hook_add;
 126   o->lsdb->hook_remove = ospf6_top_lsdb_hook_remove;
 127
 128   o->route_table = OSPF6_ROUTE_TABLE_CREATE (GLOBAL, ROUTES);
 129   o->route_table->scope = o;
 130   o->route_table->hook_add = ospf6_top_route_hook_add;
 131   o->route_table->hook_remove = ospf6_top_route_hook_remove;
 132
 133   o->brouter_table = OSPF6_ROUTE_TABLE_CREATE (GLOBAL, BORDER_ROUTERS);
 134   o->brouter_table->scope = o;
 135   o->brouter_table->hook_add = ospf6_top_brouter_hook_add;
 136   o->brouter_table->hook_remove = ospf6_top_brouter_hook_remove;
 137
 138   o->external_table = OSPF6_ROUTE_TABLE_CREATE (GLOBAL, EXTERNAL_ROUTES);
 139   o->external_table->scope = o;
 140
 141   o->external_id_table = route_table_init ();
 142
 143   return o;
 144 }
 145
 146 static void
 147 ospf6_delete (struct ospf6 *o)
 148 {
 149   struct listnode *node, *nnode;
 150   struct ospf6_area *oa;
 151
 152   for (ALL_LIST_ELEMENTS (o->area_list, node, nnode, oa))
 153     ospf6_area_delete (oa);
 154
 155   ospf6_lsdb_delete (o->lsdb);
 156   ospf6_lsdb_delete (o->lsdb_self);
 157
 158   ospf6_route_table_delete (o->route_table);
 159   ospf6_route_table_delete (o->brouter_table);
 160
 161   ospf6_route_table_delete (o->external_table);
 162   route_table_finish (o->external_id_table);
 163
 164   XFREE (MTYPE_OSPF6_TOP, o);
 165 }
 166
 167 static void
 168 ospf6_enable (struct ospf6 *o)
 169 {
 170   struct listnode *node, *nnode;
 171   struct ospf6_area *oa;
 172
 173   if (CHECK_FLAG (o->flag, OSPF6_DISABLED))
 174     {
 175       UNSET_FLAG (o->flag, OSPF6_DISABLED);
 176       for (ALL_LIST_ELEMENTS (o->area_list, node, nnode, oa))
 177         ospf6_area_enable (oa);
 178     }
 179 }
 180
 181 static void
 182 ospf6_disable (struct ospf6 *o)
 183 {
 184   struct listnode *node, *nnode;
 185   struct ospf6_area *oa;
 186
 187   if (! CHECK_FLAG (o->flag, OSPF6_DISABLED))
 188     {
 189       SET_FLAG (o->flag, OSPF6_DISABLED);
 190
 191       for (ALL_LIST_ELEMENTS (o->area_list, node, nnode, oa))
 192         ospf6_area_disable (oa);
 193
 194       ospf6_lsdb_remove_all (o->lsdb);
 195       ospf6_route_remove_all (o->route_table);
 196       ospf6_route_remove_all (o->brouter_table);
 197     }
 198 }
 199
 200 static int
 201 ospf6_maxage_remover (struct thread *thread)
 202 {
 203   struct ospf6 *o = (struct ospf6 *) THREAD_ARG (thread);
 204   struct ospf6_area *oa;
 205   struct ospf6_interface *oi;
 206   struct ospf6_neighbor *on;
 207   struct listnode *i, *j, *k;
 208
 209   o->maxage_remover = (struct thread *) NULL;
 210
 211   for (ALL_LIST_ELEMENTS_RO (o->area_list, i, oa))
 212     {
 213       for (ALL_LIST_ELEMENTS_RO (oa->if_list, j, oi))
 214         {
 215           for (ALL_LIST_ELEMENTS_RO (oi->neighbor_list, k, on))
 216             {
 217               if (on->state != OSPF6_NEIGHBOR_EXCHANGE &&
 218                   on->state != OSPF6_NEIGHBOR_LOADING)
 219                 continue;
 220
 221               return 0;
 222             }
 223         }
 224     }
 225
 226   for (ALL_LIST_ELEMENTS_RO (o->area_list, i, oa))
 227     {
 228       for (ALL_LIST_ELEMENTS_RO (oa->if_list, j, oi))
 229         OSPF6_LSDB_MAXAGE_REMOVER (oi->lsdb);
 230
 231       OSPF6_LSDB_MAXAGE_REMOVER (oa->lsdb);
 232     }
 233   OSPF6_LSDB_MAXAGE_REMOVER (o->lsdb);
 234
 235   return 0;
 236 }
 237
 238 void
 239 ospf6_maxage_remove (struct ospf6 *o)
 240 {
 241   if (o && ! o->maxage_remover)
 242     o->maxage_remover = thread_add_event (master, ospf6_maxage_remover, o, 0);
 243 }
 244
 245 /* start ospf6 */
 246 DEFUN (router_ospf6,
 247        router_ospf6_cmd,
 248        "router ospf6",
 249        ROUTER_STR
 250        OSPF6_STR)
 251 {
 252   if (ospf6 == NULL)
 253     ospf6 = ospf6_create ();
 254   if (CHECK_FLAG (ospf6->flag, OSPF6_DISABLED))
 255     ospf6_enable (ospf6);
 256
 257   /* set current ospf point. */
 258   vty->node = OSPF6_NODE;
 259   vty->index = ospf6;
 260
 261   return CMD_SUCCESS;
 262 }
 263
 264 /* stop ospf6 */
 265 DEFUN (no_router_ospf6,
 266        no_router_ospf6_cmd,
 267        "no router ospf6",
 268        NO_STR
 269        OSPF6_ROUTER_STR)
 270 {
 271   if (ospf6 == NULL || CHECK_FLAG (ospf6->flag, OSPF6_DISABLED))
 272     vty_out (vty, "OSPFv3 is not running%s", VNL);
 273   else
 274     ospf6_disable (ospf6);
 275
 276   /* return to config node . */
 277   vty->node = CONFIG_NODE;
 278   vty->index = NULL;
 279
 280   return CMD_SUCCESS;
 281 }
 282
 283 /* change Router_ID commands. */
 284 DEFUN (ospf6_router_id,
 285        ospf6_router_id_cmd,
 286        "router-id A.B.C.D",
 287        "Configure OSPF Router-ID\n"
 288        V4NOTATION_STR)
 289 {
 290   int ret;
 291   u_int32_t router_id;
 292   struct ospf6 *o;
 293
 294   o = (struct ospf6 *) vty->index;
 295
 296   ret = inet_pton (AF_INET, argv[0], &router_id);
 297   if (ret == 0)
 298     {
 299       vty_out (vty, "malformed OSPF Router-ID: %s%s", argv[0], VNL);
 300       return CMD_SUCCESS;
 301     }
 302
 303   o->router_id_static = router_id;
 304   if (o->router_id  == 0)
 305     o->router_id  = router_id;
 306
 307   return CMD_SUCCESS;
 308 }
 309
 310 DEFUN (ospf6_interface_area,
 311        ospf6_interface_area_cmd,
 312        "interface IFNAME area A.B.C.D",
 313        "Enable routing on an IPv6 interface\n"
 314        IFNAME_STR
 315        "Specify the OSPF6 area ID\n"
 316        "OSPF6 area ID in IPv4 address notation\n"
 317       )
 318 {
 319   struct ospf6 *o;
 320   struct ospf6_area *oa;
 321   struct ospf6_interface *oi;
 322   struct interface *ifp;
 323   u_int32_t area_id;
 324
 325   o = (struct ospf6 *) vty->index;
 326
 327   /* find/create ospf6 interface */
 328   ifp = if_get_by_name (argv[0]);
 329   oi = (struct ospf6_interface *) ifp->info;
 330   if (oi == NULL)
 331     oi = ospf6_interface_create (ifp);
 332   if (oi->area)
 333     {
 334       vty_out (vty, "%s already attached to Area %s%s",
 335                oi->interface->name, oi->area->name, VNL);
 336       return CMD_SUCCESS;
 337     }
 338
 339   /* parse Area-ID */
 340   if (inet_pton (AF_INET, argv[1], &area_id) != 1)
 341     {
 342       vty_out (vty, "Invalid Area-ID: %s%s", argv[1], VNL);
 343       return CMD_SUCCESS;
 344     }
 345
 346   /* find/create ospf6 area */
 347   oa = ospf6_area_lookup (area_id, o);
 348   if (oa == NULL)
 349     oa = ospf6_area_create (area_id, o);
 350
 351   /* attach interface to area */
 352   listnode_add (oa->if_list, oi); /* sort ?? */
 353   oi->area = oa;
 354
 355   SET_FLAG (oa->flag, OSPF6_AREA_ENABLE);
 356
 357   /* start up */
 358   thread_add_event (master, interface_up, oi, 0);
 359
 360   /* If the router is ABR, originate summary routes */
 361   if (ospf6_is_router_abr (o))
 362     ospf6_abr_enable_area (oa);
 363
 364   return CMD_SUCCESS;
 365 }
 366
 367 DEFUN (no_ospf6_interface_area,
 368        no_ospf6_interface_area_cmd,
 369        "no interface IFNAME area A.B.C.D",
 370        NO_STR
 371        "Disable routing on an IPv6 interface\n"
 372        IFNAME_STR
 373        "Specify the OSPF6 area ID\n"
 374        "OSPF6 area ID in IPv4 address notation\n"
 375        )
 376 {
 377   struct ospf6 *o;
 378   struct ospf6_interface *oi;
 379   struct ospf6_area *oa;
 380   struct interface *ifp;
 381   u_int32_t area_id;
 382
 383   o = (struct ospf6 *) vty->index;
 384
 385   ifp = if_lookup_by_name (argv[0]);
 386   if (ifp == NULL)
 387     {
 388       vty_out (vty, "No such interface %s%s", argv[0], VNL);
 389       return CMD_SUCCESS;
 390     }
 391
 392   oi = (struct ospf6_interface *) ifp->info;
 393   if (oi == NULL)
 394     {
 395       vty_out (vty, "Interface %s not enabled%s", ifp->name, VNL);
 396       return CMD_SUCCESS;
 397     }
 398
 399   /* parse Area-ID */
 400   if (inet_pton (AF_INET, argv[1], &area_id) != 1)
 401     {
 402       vty_out (vty, "Invalid Area-ID: %s%s", argv[1], VNL);
 403       return CMD_SUCCESS;
 404     }
 405
 406   /* Verify Area */
 407   if (oi->area == NULL)
 408     {
 409       vty_out (vty, "No such Area-ID: %s%s", argv[1], VNL);
 410       return CMD_SUCCESS;
 411     }
 412
 413   if (oi->area->area_id != area_id)
 414     {
 415       vty_out (vty, "Wrong Area-ID: %s is attached to area %s%s",
 416                oi->interface->name, oi->area->name, VNL);
 417       return CMD_SUCCESS;
 418     }
 419
 420   thread_execute (master, interface_down, oi, 0);
 421
 422   oa = oi->area;
 423   listnode_delete (oi->area->if_list, oi);
 424   oi->area = (struct ospf6_area *) NULL;
 425
 426   /* Withdraw inter-area routes from this area, if necessary */
 427   if (oa->if_list->count == 0)
 428     {
 429       UNSET_FLAG (oa->flag, OSPF6_AREA_ENABLE);
 430       ospf6_abr_disable_area (oa);
 431     }
 432
 433   return CMD_SUCCESS;
 434 }
 435
 436 static void
 437 ospf6_show (struct vty *vty, struct ospf6 *o)
 438 {
 439   struct listnode *n;
 440   struct ospf6_area *oa;
 441   char router_id[16], duration[32];
 442   struct timeval now, running;
 443
 444   /* process id, router id */
 445   inet_ntop (AF_INET, &o->router_id, router_id, sizeof (router_id));
 446   vty_out (vty, " OSPFv3 Routing Process (0) with Router-ID %s%s",
 447            router_id, VNL);
 448
 449   /* running time */
 450   quagga_gettime (QUAGGA_CLK_MONOTONIC, &now);
 451   timersub (&now, &o->starttime, &running);
 452   timerstring (&running, duration, sizeof (duration));
 453   vty_out (vty, " Running %s%s", duration, VNL);
 454
 455   /* Redistribute configuration */
 456   /* XXX */
 457
 458   /* LSAs */
 459   vty_out (vty, " Number of AS scoped LSAs is %u%s",
 460            o->lsdb->count, VNL);
 461
 462   /* Areas */
 463   vty_out (vty, " Number of areas in this router is %u%s",
 464            listcount (o->area_list), VNL);
 465
 466   for (ALL_LIST_ELEMENTS_RO (o->area_list, n, oa))
 467     ospf6_area_show (vty, oa);
 468 }
 469
 470 /* show top level structures */
 471 DEFUN (show_ipv6_ospf6,
 472        show_ipv6_ospf6_cmd,
 473        "show ipv6 ospf6",
 474        SHOW_STR
 475        IP6_STR
 476        OSPF6_STR)
 477 {
 478   OSPF6_CMD_CHECK_RUNNING ();
 479
 480   ospf6_show (vty, ospf6);
 481   return CMD_SUCCESS;
 482 }
 483
 484 DEFUN (show_ipv6_ospf6_route,
 485        show_ipv6_ospf6_route_cmd,
 486        "show ipv6 ospf6 route",
 487        SHOW_STR
 488        IP6_STR
 489        OSPF6_STR
 490        ROUTE_STR
 491        )
 492 {
 493   ospf6_route_table_show (vty, argc, argv, ospf6->route_table);
 494   return CMD_SUCCESS;
 495 }
 496
 497 ALIAS (show_ipv6_ospf6_route,
 498        show_ipv6_ospf6_route_detail_cmd,
 499        "show ipv6 ospf6 route (X:X::X:X|X:X::X:X/M|detail|summary)",
 500        SHOW_STR
 501        IP6_STR
 502        OSPF6_STR
 503        ROUTE_STR
 504        "Specify IPv6 address\n"
 505        "Specify IPv6 prefix\n"
 506        "Detailed information\n"
 507        "Summary of route table\n"
 508        )
 509
 510 DEFUN (show_ipv6_ospf6_route_match,
 511        show_ipv6_ospf6_route_match_cmd,
 512        "show ipv6 ospf6 route X:X::X:X/M match",
 513        SHOW_STR
 514        IP6_STR
 515        OSPF6_STR
 516        ROUTE_STR
 517        "Specify IPv6 prefix\n"
 518        "Display routes which match the specified route\n"
 519        )
 520 {
 521   const char *sargv[CMD_ARGC_MAX];
 522   int i, sargc;
 523
 524   /* copy argv to sargv and then append "match" */
 525   for (i = 0; i < argc; i++)
 526     sargv[i] = argv[i];
 527   sargc = argc;
 528   sargv[sargc++] = "match";
 529   sargv[sargc] = NULL;
 530
 531   ospf6_route_table_show (vty, sargc, sargv, ospf6->route_table);
 532   return CMD_SUCCESS;
 533 }
 534
 535 DEFUN (show_ipv6_ospf6_route_match_detail,
 536        show_ipv6_ospf6_route_match_detail_cmd,
 537        "show ipv6 ospf6 route X:X::X:X/M match detail",
 538        SHOW_STR
 539        IP6_STR
 540        OSPF6_STR
 541        ROUTE_STR
 542        "Specify IPv6 prefix\n"
 543        "Display routes which match the specified route\n"
 544        "Detailed information\n"
 545        )
 546 {
 547   const char *sargv[CMD_ARGC_MAX];
 548   int i, sargc;
 549
 550   /* copy argv to sargv and then append "match" and "detail" */
 551   for (i = 0; i < argc; i++)
 552     sargv[i] = argv[i];
 553   sargc = argc;
 554   sargv[sargc++] = "match";
 555   sargv[sargc++] = "detail";
 556   sargv[sargc] = NULL;
 557
 558   ospf6_route_table_show (vty, sargc, sargv, ospf6->route_table);
 559   return CMD_SUCCESS;
 560 }
 561
 562 ALIAS (show_ipv6_ospf6_route_match,
 563        show_ipv6_ospf6_route_longer_cmd,
 564        "show ipv6 ospf6 route X:X::X:X/M longer",
 565        SHOW_STR
 566        IP6_STR
 567        OSPF6_STR
 568        ROUTE_STR
 569        "Specify IPv6 prefix\n"
 570        "Display routes longer than the specified route\n"
 571        )
 572
 573 DEFUN (show_ipv6_ospf6_route_match_detail,
 574        show_ipv6_ospf6_route_longer_detail_cmd,
 575        "show ipv6 ospf6 route X:X::X:X/M longer detail",
 576        SHOW_STR
 577        IP6_STR
 578        OSPF6_STR
 579        ROUTE_STR
 580        "Specify IPv6 prefix\n"
 581        "Display routes longer than the specified route\n"
 582        "Detailed information\n"
 583        );
 584
 585 ALIAS (show_ipv6_ospf6_route,
 586        show_ipv6_ospf6_route_type_cmd,
 587        "show ipv6 ospf6 route (intra-area|inter-area|external-1|external-2)",
 588        SHOW_STR
 589        IP6_STR
 590        OSPF6_STR
 591        ROUTE_STR
 592        "Dispaly Intra-Area routes\n"
 593        "Dispaly Inter-Area routes\n"
 594        "Dispaly Type-1 External routes\n"
 595        "Dispaly Type-2 External routes\n"
 596        )
 597
 598 DEFUN (show_ipv6_ospf6_route_type_detail,
 599        show_ipv6_ospf6_route_type_detail_cmd,
 600        "show ipv6 ospf6 route (intra-area|inter-area|external-1|external-2) detail",
 601        SHOW_STR
 602        IP6_STR
 603        OSPF6_STR
 604        ROUTE_STR
 605        "Dispaly Intra-Area routes\n"
 606        "Dispaly Inter-Area routes\n"
 607        "Dispaly Type-1 External routes\n"
 608        "Dispaly Type-2 External routes\n"
 609        "Detailed information\n"
 610        )
 611 {
 612   const char *sargv[CMD_ARGC_MAX];
 613   int i, sargc;
 614
 615   /* copy argv to sargv and then append "detail" */
 616   for (i = 0; i < argc; i++)
 617     sargv[i] = argv[i];
 618   sargc = argc;
 619   sargv[sargc++] = "detail";
 620   sargv[sargc] = NULL;
 621
 622   ospf6_route_table_show (vty, sargc, sargv, ospf6->route_table);
 623   return CMD_SUCCESS;
 624 }
 625
 626 /* OSPF configuration write function. */
 627 static int
 628 config_write_ospf6 (struct vty *vty)
 629 {
 630   char router_id[16];
 631   struct listnode *j, *k;
 632   struct ospf6_area *oa;
 633   struct ospf6_interface *oi;
 634
 635   /* OSPFv6 configuration. */
 636   if (ospf6 == NULL)
 637     return CMD_SUCCESS;
 638   if (CHECK_FLAG (ospf6->flag, OSPF6_DISABLED))
 639     return CMD_SUCCESS;
 640
 641   inet_ntop (AF_INET, &ospf6->router_id_static, router_id, sizeof (router_id));
 642   vty_out (vty, "router ospf6%s", VNL);
 643   if (ospf6->router_id_static != 0)
 644     vty_out (vty, " router-id %s%s", router_id, VNL);
 645
 646   ospf6_redistribute_config_write (vty);
 647   ospf6_area_config_write (vty);
 648
 649   for (ALL_LIST_ELEMENTS_RO (ospf6->area_list, j, oa))
 650     {
 651       for (ALL_LIST_ELEMENTS_RO (oa->if_list, k, oi))
 652         vty_out (vty, " interface %s area %s%s",
 653                  oi->interface->name, oa->name, VNL);
 654     }
 655   vty_out (vty, "!%s", VNL);
 656   return 0;
 657 }
 658
 659 /* OSPF6 node structure. */
 660 static struct cmd_node ospf6_node =
 661 {
 662   OSPF6_NODE,
 663   "%s(config-ospf6)# ",
 664   1 /* VTYSH */
 665 };
 666
 667 /* Install ospf related commands. */
 668 void
 669 ospf6_top_init (void)
 670 {
 671   /* Install ospf6 top node. */
 672   install_node (&ospf6_node, config_write_ospf6);
 673
 674   install_element (VIEW_NODE, &show_ipv6_ospf6_cmd);
 675   install_element (ENABLE_NODE, &show_ipv6_ospf6_cmd);
 676   install_element (CONFIG_NODE, &router_ospf6_cmd);
 677   install_element (CONFIG_NODE, &no_router_ospf6_cmd);
 678
 679   install_element (VIEW_NODE, &show_ipv6_ospf6_route_cmd);
 680   install_element (VIEW_NODE, &show_ipv6_ospf6_route_detail_cmd);
 681   install_element (VIEW_NODE, &show_ipv6_ospf6_route_match_cmd);
 682   install_element (VIEW_NODE, &show_ipv6_ospf6_route_match_detail_cmd);
 683   install_element (VIEW_NODE, &show_ipv6_ospf6_route_longer_cmd);
 684   install_element (VIEW_NODE, &show_ipv6_ospf6_route_longer_detail_cmd);
 685   install_element (VIEW_NODE, &show_ipv6_ospf6_route_type_cmd);
 686   install_element (VIEW_NODE, &show_ipv6_ospf6_route_type_detail_cmd);
 687   install_element (ENABLE_NODE, &show_ipv6_ospf6_route_cmd);
 688   install_element (ENABLE_NODE, &show_ipv6_ospf6_route_detail_cmd);
 689   install_element (ENABLE_NODE, &show_ipv6_ospf6_route_match_cmd);
 690   install_element (ENABLE_NODE, &show_ipv6_ospf6_route_match_detail_cmd);
 691   install_element (ENABLE_NODE, &show_ipv6_ospf6_route_longer_cmd);
 692   install_element (ENABLE_NODE, &show_ipv6_ospf6_route_longer_detail_cmd);
 693   install_element (ENABLE_NODE, &show_ipv6_ospf6_route_type_cmd);
 694   install_element (ENABLE_NODE, &show_ipv6_ospf6_route_type_detail_cmd);
 695
 696   install_default (OSPF6_NODE);
 697   install_element (OSPF6_NODE, &ospf6_router_id_cmd);
 698   install_element (OSPF6_NODE, &ospf6_interface_area_cmd);
 699   install_element (OSPF6_NODE, &no_ospf6_interface_area_cmd);
 700 }
 701
 702