1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
|
.. _ospfv3:
******
OSPFv3
******
*ospf6d* is a daemon support OSPF version 3 for IPv6 network. OSPF for IPv6 is
described in :rfc:`2740`.
.. _ospf6-router:
OSPF6 router
============
.. clicmd:: router ospf6 [vrf NAME]
.. clicmd:: ospf6 router-id A.B.C.D
Set router's Router-ID.
.. clicmd:: timers throttle spf (0-600000) (0-600000) (0-600000)
This command sets the initial `delay`, the `initial-holdtime`
and the `maximum-holdtime` between when SPF is calculated and the
event which triggered the calculation. The times are specified in
milliseconds and must be in the range of 0 to 600000 milliseconds.
The `delay` specifies the minimum amount of time to delay SPF
calculation (hence it affects how long SPF calculation is delayed after
an event which occurs outside of the holdtime of any previous SPF
calculation, and also serves as a minimum holdtime).
Consecutive SPF calculations will always be separated by at least
'hold-time' milliseconds. The hold-time is adaptive and initially is
set to the `initial-holdtime` configured with the above command.
Events which occur within the holdtime of the previous SPF calculation
will cause the holdtime to be increased by `initial-holdtime`, bounded
by the `maximum-holdtime` configured with this command. If the adaptive
hold-time elapses without any SPF-triggering event occurring then
the current holdtime is reset to the `initial-holdtime`.
.. code-block:: frr
router ospf6
timers throttle spf 200 400 10000
In this example, the `delay` is set to 200ms, the initial holdtime is set
to 400ms and the `maximum holdtime` to 10s. Hence there will always be at
least 200ms between an event which requires SPF calculation and the actual
SPF calculation. Further consecutive SPF calculations will always be
separated by between 400ms to 10s, the hold-time increasing by 400ms each
time an SPF-triggering event occurs within the hold-time of the previous
SPF calculation.
.. clicmd:: auto-cost reference-bandwidth COST
This sets the reference bandwidth for cost calculations, where this
bandwidth is considered equivalent to an OSPF cost of 1, specified in
Mbits/s. The default is 100Mbit/s (i.e. a link of bandwidth 100Mbit/s
or higher will have a cost of 1. Cost of lower bandwidth links will be
scaled with reference to this cost).
This configuration setting MUST be consistent across all routers
within the OSPF domain.
.. clicmd:: maximum-paths (1-64)
Use this command to control the maximum number of parallel routes that
OSPFv3 can support. The default is 64.
.. clicmd:: write-multiplier (1-100)
Use this command to tune the amount of work done in the packet read and
write threads before relinquishing control. The parameter is the number
of packets to process before returning. The default value of this parameter
is 20.
.. clicmd:: clear ipv6 ospf6 process [vrf NAME]
This command clears up the database and routing tables and resets the
neighborship by restarting the interface state machine. This will be
helpful when there is a change in router-id and if user wants the router-id
change to take effect, user can use this cli instead of restarting the
ospf6d daemon.
.. clicmd:: clear ipv6 ospf6 [vrf NAME] interface [IFNAME]
This command restarts the interface state machine for all interfaces in the
VRF or only for the specific interface if ``IFNAME`` is specified.
ASBR Summarisation Support in OSPFv3
====================================
External routes in OSPFv3 are carried by type 5/7 LSA (external LSAs).
External LSAs are generated by ASBR (Autonomous System Boundary Router).
Large topology database requires a large amount of router memory, which
slows down all processes, including SPF calculations.
It is necessary to reduce the size of the OSPFv3 topology database,
especially in a large network. Summarising routes keeps the routing
tables smaller and easier to troubleshoot.
External route summarization must be configured on ASBR.
Stub area do not allow ASBR because they don’t allow type 5 LSAs.
An ASBR will inject a summary route into the OSPFv3 domain.
Summary route will only be advertised if you have at least one subnet
that falls within the summary range.
Users will be allowed an option in the CLI to not advertise range of
ipv6 prefixes as well.
The configuration of ASBR Summarisation is supported using the CLI command
.. clicmd:: summary-address X:X::X:X/M [tag (1-4294967295)] [{metric (0-16777215) | metric-type (1-2)}]
This command will advertise a single External LSA on behalf of all the
prefixes falling under this range configured by the CLI.
The user is allowed to configure tag, metric and metric-type as well.
By default, tag is not configured, default metric as 20 and metric-type
as type-2 gets advertised.
A summary route is created when one or more specific routes are learned and
removed when no more specific route exist.
The summary route is also installed in the local system with Null0 as
next-hop to avoid leaking traffic.
.. clicmd:: no summary-address X:X::X:X/M [tag (1-4294967295)] [{metric (0-16777215) | metric-type (1-2)}]
This command can be used to remove the summarisation configuration.
This will flush the single External LSA if it was originated and advertise
the External LSAs for all the existing individual prefixes.
.. clicmd:: summary-address X:X::X:X/M no-advertise
This command can be used when user do not want to advertise a certain
range of prefixes using the no-advertise option.
This command when configured will flush all the existing external LSAs
falling under this range.
.. clicmd:: no summary-address X:X::X:X/M no-advertise
This command can be used to remove the previous configuration.
When configured, tt will resume originating external LSAs for all the prefixes
falling under the configured range.
.. clicmd:: aggregation timer (5-1800)
The summarisation command takes effect after the aggregation timer expires.
By default the value of this timer is 5 seconds. User can modify the time
after which the external LSAs should get originated using this command.
.. clicmd:: no aggregation timer (5-1800)
This command removes the timer configuration. It reverts back to default
5 second timer.
.. clicmd:: show ipv6 ospf6 summary-address [detail] [json]
This command can be used to see all the summary-address related information.
When detail option is used, it shows all the prefixes falling under each
summary-configuration apart from other information.
.. _ospf6-area:
OSPF6 area
==========
.. clicmd:: area A.B.C.D range X:X::X:X/M [<advertise|not-advertise|cost (0-16777215)>]
.. clicmd:: area (0-4294967295) range X:X::X:X/M [<advertise|not-advertise|cost (0-16777215)>]
Summarize a group of internal subnets into a single Inter-Area-Prefix LSA.
This command can only be used at the area boundary (ABR router).
By default, the metric of the summary route is calculated as the highest
metric among the summarized routes. The `cost` option, however, can be used
to set an explicit metric.
The `not-advertise` option, when present, prevents the summary route from
being advertised, effectively filtering the summarized routes.
.. clicmd:: area A.B.C.D nssa [no-summary] [default-information-originate [metric-type (1-2)] [metric (0-16777214)]]
.. clicmd:: area (0-4294967295) nssa [no-summary] [default-information-originate [metric-type (1-2)] [metric (0-16777214)]]
Configure the area to be a NSSA (Not-So-Stubby Area).
The following functionalities are implemented as per RFC 3101:
1. Advertising Type-7 LSA into NSSA area when external route is
redistributed into OSPFv3.
2. Processing Type-7 LSA received from neighbor and installing route in the
route table.
3. Support for NSSA ABR functionality which is generating Type-5 LSA when
backbone area is configured. Currently translation of Type-7 LSA to
Type-5 LSA is enabled by default.
4. Support for NSSA Translator functionality when there are multiple NSSA
ABR in an area.
An NSSA ABR can be configured with the `no-summary` option to prevent the
advertisement of summaries into the area. In that case, a single Type-3 LSA
containing a default route is originated into the NSSA.
NSSA ABRs and ASBRs can be configured with `default-information-originate`
option to originate a Type-7 default route into the NSSA area. In the case
of NSSA ASBRs, the origination of the default route is conditioned to the
existence of a default route in the RIB that wasn't learned via the OSPF
protocol.
.. clicmd:: area A.B.C.D nssa range X:X::X:X/M [<not-advertise|cost (0-16777215)>]
.. clicmd:: area (0-4294967295) nssa range X:X::X:X/M [<not-advertise|cost (0-16777215)>]
Summarize a group of external subnets into a single Type-7 LSA, which is
then translated to a Type-5 LSA and avertised to the backbone.
This command can only be used at the area boundary (NSSA ABR router).
By default, the metric of the summary route is calculated as the highest
metric among the summarized routes. The `cost` option, however, can be used
to set an explicit metric.
The `not-advertise` option, when present, prevents the summary route from
being advertised, effectively filtering the summarized routes.
.. clicmd:: area A.B.C.D export-list NAME
.. clicmd:: area (0-4294967295) export-list NAME
Filter Type-3 summary-LSAs announced to other areas originated from intra-
area paths from specified area.
.. code-block:: frr
router ospf6
area 0.0.0.10 export-list foo
!
ipv6 access-list foo permit 2001:db8:1000::/64
ipv6 access-list foo deny any
With example above any intra-area paths from area 0.0.0.10 and from range
2001:db8::/32 (for example 2001:db8:1::/64 and 2001:db8:2::/64) are announced
into other areas as Type-3 summary-LSA's, but any others (for example
2001:200::/48) aren't.
This command is only relevant if the router is an ABR for the specified
area.
.. clicmd:: area A.B.C.D import-list NAME
.. clicmd:: area (0-4294967295) import-list NAME
Same as export-list, but it applies to paths announced into specified area
as Type-3 summary-LSAs.
.. clicmd:: area A.B.C.D filter-list prefix NAME in
.. clicmd:: area A.B.C.D filter-list prefix NAME out
.. clicmd:: area (0-4294967295) filter-list prefix NAME in
.. clicmd:: area (0-4294967295) filter-list prefix NAME out
Filtering Type-3 summary-LSAs to/from area using prefix lists. This command
makes sense in ABR only.
.. _ospf6-interface:
OSPF6 interface
===============
.. clicmd:: ipv6 ospf6 area <A.B.C.D|(0-4294967295)>
Enable OSPFv3 on the interface and add it to the specified area.
.. clicmd:: ipv6 ospf6 cost COST
Sets interface's output cost. Default value depends on the interface
bandwidth and on the auto-cost reference bandwidth.
.. clicmd:: ipv6 ospf6 hello-interval HELLOINTERVAL
Sets interface's Hello Interval. Default 10
.. clicmd:: ipv6 ospf6 dead-interval DEADINTERVAL
Sets interface's Router Dead Interval. Default value is 40.
.. clicmd:: ipv6 ospf6 retransmit-interval RETRANSMITINTERVAL
Sets interface's Rxmt Interval. Default value is 5.
.. clicmd:: ipv6 ospf6 priority PRIORITY
Sets interface's Router Priority. Default value is 1.
.. clicmd:: ipv6 ospf6 transmit-delay TRANSMITDELAY
Sets interface's Inf-Trans-Delay. Default value is 1.
.. clicmd:: ipv6 ospf6 network (broadcast|point-to-point)
Set explicitly network type for specified interface.
OSPF6 route-map
===============
Usage of *ospfd6*'s route-map support.
.. clicmd:: set metric [+|-](0-4294967295)
Set a metric for matched route when sending announcement. Use plus (+) sign
to add a metric value to an existing metric. Use minus (-) sign to
substract a metric value from an existing metric.
.. _redistribute-routes-to-ospf6:
Redistribute routes to OSPF6
============================
.. clicmd:: redistribute <babel|bgp|connected|isis|kernel|openfabric|ripng|sharp|static|table> [metric-type (1-2)] [metric (0-16777214)] [route-map WORD]
Redistribute routes of the specified protocol or kind into OSPFv3, with the
metric type and metric set if specified, filtering the routes using the
given route-map if specified.
.. clicmd:: default-information originate [{always|metric (0-16777214)|metric-type (1-2)|route-map WORD}]
The command injects default route in the connected areas. The always
argument injects the default route regardless of it being present in the
router. Metric values and route-map can also be specified optionally.
Graceful Restart
================
.. clicmd:: graceful-restart [grace-period (1-1800)]
Configure Graceful Restart (RFC 5187) restarting support.
When enabled, the default grace period is 120 seconds.
To perform a graceful shutdown, the "graceful-restart prepare ipv6 ospf"
EXEC-level command needs to be issued before restarting the ospf6d daemon.
.. clicmd:: graceful-restart helper enable [A.B.C.D]
Configure Graceful Restart (RFC 5187) helper support.
By default, helper support is disabled for all neighbours.
This config enables/disables helper support on this router
for all neighbours.
To enable/disable helper support for a specific
neighbour, the router-id (A.B.C.D) has to be specified.
.. clicmd:: graceful-restart helper strict-lsa-checking
If 'strict-lsa-checking' is configured then the helper will
abort the Graceful Restart when a LSA change occurs which
affects the restarting router.
By default 'strict-lsa-checking' is enabled"
.. clicmd:: graceful-restart helper supported-grace-time (10-1800)
Supports as HELPER for configured grace period.
.. clicmd:: graceful-restart helper planned-only
It helps to support as HELPER only for planned
restarts. By default, it supports both planned and
unplanned outages.
.. clicmd:: graceful-restart prepare ipv6 ospf
Initiate a graceful restart for all OSPFv3 instances configured with the
"graceful-restart" command. The ospf6d daemon should be restarted during
the instance-specific grace period, otherwise the graceful restart will fail.
This is an EXEC-level command.
.. _Authentication-trailer:
Authentication trailer support:
===============================
IPv4 version of OSPF supports authentication as part of the base RFC.
When IPv6 version of OSPF was developed there was IPSec support for IPv6,
Hence OSPFv3(IPv6 version of OSPF) suggest to use IPSec as authentication
and encryption mechanism. IPSec supports authentication using AH header and
Encryption using ESP.
There are few disadvantages of using IPSec with OSPFv3.
1. If encryption is enabled for OSPFv3 packets, then its not
possible to give priority to control packets.
2. IPSec has platform dependency and may not be supported
in all platforms.
3. It is performance intensive.
4. Its difficult to configure.
Some advantages of OSPFv3 authentication trailer feature.
1. It provides replay protection via sequence number.
2. It provides IPv6 source address protection.
3. No platform dependency.
4. Easy to implement and maintain.
This feature is support for ``RFC7166``.
FRR supports MD5 and SHA256 internally and relays on openssl for other hash
algorithms. If user wants to use only MD5 and SHA256, no special action is
required. If user wants complete support of authentication trailer with all
hash algorithms follow below steps.
Installing Dependencies:
------------------------
.. code-block:: console
sudo apt update
sudo apt-get install openssl
Compile:
--------
Follow normal compilation as mentioned in the build page. If you want to
use all the hash algorithms then follow the steps mentioned in note before
compiling.
.. note::
If your platform supports ``openssl``, please make sure to add
``--with-crypto=openssl`` to your configure options.
Default value is ``--with-crypto=internal``
CLI Configuration:
------------------
There are two ways in which authentication trailer can be configured for
OSPFv3. These commands are mutually exclusive, only one can be configured
at any time.
1. Using manual key configuration.
2. Using keychain.
List of hash algorithms supported:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Without openssl:
++++++++++++++++
``MD5``
``HMAC-SHA-256``
With openssl:
+++++++++++++
``MD5``
``HMAC-SHA-1``
``HMAC-SHA-256``
``HMAC-SHA-384``
``HMAC-SHA-512``
Example configuration of manual key:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Without openssl:
++++++++++++++++
.. clicmd:: ipv6 ospf6 authentication key-id (1-65535) hash-algo <md5|hmac-sha-256> key WORD
With openssl:
+++++++++++++
.. clicmd:: ipv6 ospf6 authentication key-id (1-65535) hash-algo <md5|hmac-sha-256|hmac-sha-1|hmac-sha-384|hmac-sha-512> key WORD
Example configuration of keychain:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.. clicmd:: ipv6 ospf6 authentication keychain KEYCHAIN_NAME
Running configuration:
----------------------
Manual key:
^^^^^^^^^^^
.. code-block:: frr
frr# show running-config
Building configuration...
Current configuration:
!
interface ens192
ipv6 address 2001:DB8::2/64
ipv6 ospf6 authentication key-id 10 hash-algo hmac-sha-256 key abhinay
Keychain:
^^^^^^^^^
.. code-block:: frr
frr# show running-config
Building configuration...
Current configuration:
!
interface ens192
ipv6 address 2001:DB8::2/64
ipv6 ospf6 authentication keychain abhinay
Example keychain config:
^^^^^^^^^^^^^^^^^^^^^^^^
.. code-block:: frr
frr#show running-config
Building configuration...
Current configuration:
!
key chain abcd
key 100
key-string password
cryptographic-algorithm sha1
exit
key 200
key-string password
cryptographic-algorithm sha256
exit
!
key chain pqr
key 300
key-string password
cryptographic-algorithm sha384
exit
key 400
key-string password
cryptographic-algorithm sha384
exit
!
Show commands:
--------------
There is an interface show command that displays if authentication trailer
is enabled or not. json output is also supported.
There is support for drop counters, which will help in debugging the feature.
.. code-block:: frr
frr# show ipv6 ospf6 interface ens192
ens192 is up, type BROADCAST
Interface ID: 5
Number of I/F scoped LSAs is 2
0 Pending LSAs for LSUpdate in Time 00:00:00 [thread off]
0 Pending LSAs for LSAck in Time 00:00:00 [thread off]
Authentication trailer is enabled with manual key ==> new info added
Packet drop Tx 0, Packet drop Rx 0
OSPFv3 supports options in hello and database description packets hence
the presence of authentication trailer needs to be stored in OSPFv3
neighbor info. Since RFC specifies that we need to handled sequence number
for every ospf6 packet type, sequence number recvd in authentication header
from the neighbor is stored in neighbor to validate the packet.
json output is also supported.
.. code-block:: frr
frr# show ipv6 ospf6 neighbor 2.2.2.2 detail
Neighbor 2.2.2.2%ens192
Area 1 via interface ens192 (ifindex 3)
0 Pending LSAs for LSUpdate in Time 00:00:00 [thread off]
0 Pending LSAs for LSAck in Time 00:00:00 [thread off]
Authentication header present ==> new info added
hello DBDesc LSReq LSUpd LSAck
Higher sequence no 0x0 0x0 0x0 0x0 0x0
Lower sequence no 0x242E 0x1DC4 0x1DC3 0x23CC 0x1DDA
Sent packet sequence number is maintained per ospf6 router for every packet
that is sent out of router, so sequence number is maintained per ospf6 process.
.. code-block:: frr
frr# show ipv6 ospf6
OSPFv3 Routing Process (0) with Router-ID 2.2.2.2
Number of areas in this router is 1
Authentication Sequence number info
Higher sequence no 3, Lower sequence no 1656
Debug command:
--------------
Below command can be used to enable ospfv3 authentication trailer
specific logs if you have to debug the feature.
.. clicmd:: debug ospf6 authentication [<tx|rx>]
Feature supports authentication trailer tx/rx drop counters for debugging,
which can be used to see if packets are getting dropped due to error in
processing authentication trailer information in OSPFv3 packet.
json output is also supported.
.. code-block:: frr
frr# show ipv6 ospf6 interface ens192
ens192 is up, type BROADCAST
Interface ID: 5
Number of I/F scoped LSAs is 2
0 Pending LSAs for LSUpdate in Time 00:00:00 [thread off]
0 Pending LSAs for LSAck in Time 00:00:00 [thread off]
Authentication trailer is enabled with manual key
Packet drop Tx 0, Packet drop Rx 0 ==> new counters
Clear command:
--------------
Below command can be used to clear the tx/rx drop counters in interface.
Below command can be used to clear all ospfv3 interface or specific
interface by specifying the interface name.
.. clicmd:: clear ipv6 ospf6 auth-counters interface [IFNAME]
.. _showing-ospf6-information:
Showing OSPF6 information
=========================
.. clicmd:: show ipv6 ospf6 [vrf <NAME|all>] [json]
Show information on a variety of general OSPFv3 and area state and
configuration information. JSON output can be obtained by appending 'json'
to the end of command.
.. clicmd:: show ipv6 ospf6 [vrf <NAME|all>] database [<detail|dump|internal>] [json]
This command shows LSAs present in the LSDB. There are three view options.
These options helps in viewing all the parameters of the LSAs. JSON output
can be obtained by appending 'json' to the end of command. JSON option is
not applicable with 'dump' option.
.. clicmd:: show ipv6 ospf6 [vrf <NAME|all>] database <router|network|inter-prefix|inter-router|as-external|group-membership|type-7|link|intra-prefix> [json]
These options filters out the LSA based on its type. The three views options
works here as well. JSON output can be obtained by appending 'json' to the
end of command.
.. clicmd:: show ipv6 ospf6 [vrf <NAME|all>] database adv-router A.B.C.D linkstate-id A.B.C.D [json]
The LSAs additinally can also be filtered with the linkstate-id and
advertising-router fields. We can use the LSA type filter and views with
this command as well and visa-versa. JSON output can be obtained by
appending 'json' to the end of command.
.. clicmd:: show ipv6 ospf6 [vrf <NAME|all>] database self-originated [json]
This command is used to filter the LSAs which are originated by the present
router. All the other filters are applicable here as well.
.. clicmd:: show ipv6 ospf6 [vrf <NAME|all>] interface [json]
To see OSPF interface configuration like costs. JSON output can be
obtained by appending "json" in the end.
.. clicmd:: show ipv6 ospf6 [vrf <NAME|all>] neighbor [json]
Shows state and chosen (Backup) DR of neighbor. JSON output can be
obtained by appending 'json' at the end.
.. clicmd:: show ipv6 ospf6 [vrf <NAME|all>] interface traffic [json]
Shows counts of different packets that have been received and transmitted
by the interfaces. JSON output can be obtained by appending "json" at the
end.
.. clicmd:: show ipv6 route ospf6
This command shows internal routing table.
.. clicmd:: show ipv6 ospf6 zebra [json]
Shows state about what is being redistributed between zebra and OSPF6.
JSON output can be obtained by appending "json" at the end.
.. clicmd:: show ipv6 ospf6 [vrf <NAME|all>] redistribute [json]
Shows the routes which are redistributed by the router. JSON output can
be obtained by appending 'json' at the end.
.. clicmd:: show ipv6 ospf6 [vrf <NAME|all>] route [<intra-area|inter-area|external-1|external-2|X:X::X:X|X:X::X:X/M|detail|summary>] [json]
This command displays the ospfv3 routing table as determined by the most
recent SPF calculations. Options are provided to view the different types
of routes. Other than the standard view there are two other options, detail
and summary. JSON output can be obtained by appending 'json' to the end of
command.
.. clicmd:: show ipv6 ospf6 [vrf <NAME|all>] route X:X::X:X/M match [detail] [json]
The additional match option will match the given address to the destination
of the routes, and return the result accordingly.
.. clicmd:: show ipv6 ospf6 [vrf <NAME|all>] interface [IFNAME] prefix [detail|<X:X::X:X|X:X::X:X/M> [<match|detail>]] [json]
This command shows the prefixes present in the interface routing table.
Interface name can also be given. JSON output can be obtained by appending
'json' to the end of command.
.. clicmd:: show ipv6 ospf6 [vrf <NAME|all>] spf tree [json]
This commands shows the spf tree from the recent spf calculation with the
calling router as the root. If json is appended in the end, we can get the
tree in JSON format. Each area that the router belongs to has it's own
JSON object, with each router having "cost", "isLeafNode" and "children" as
arguments.
.. clicmd:: show ipv6 ospf6 graceful-restart helper [detail] [json]
This command shows the graceful-restart helper details including helper
configuration parameters.
.. _ospf6-debugging:
OSPFv3 Debugging
================
The following debug commands are supported:
.. clicmd:: debug ospf6 abr
Toggle OSPFv3 ABR debugging messages.
.. clicmd:: debug ospf6 asbr
Toggle OSPFv3 ASBR debugging messages.
.. clicmd:: debug ospf6 border-routers {router-id [A.B.C.D] | area-id [A.B.C.D]}
Toggle OSPFv3 border router debugging messages. This can be specified for a
router with specific Router-ID/Area-ID.
.. clicmd:: debug ospf6 flooding
Toggle OSPFv3 flooding debugging messages.
.. clicmd:: debug ospf6 interface
Toggle OSPFv3 interface related debugging messages.
.. clicmd:: debug ospf6 lsa
Toggle OSPFv3 Link State Advertisements debugging messages.
.. clicmd:: debug ospf6 lsa aggregation
Toggle OSPFv3 Link State Advertisements summarization debugging messages.
.. clicmd:: debug ospf6 message
Toggle OSPFv3 message exchange debugging messages.
.. clicmd:: debug ospf6 neighbor
Toggle OSPFv3 neighbor interaction debugging messages.
.. clicmd:: debug ospf6 nssa
Toggle OSPFv3 Not So Stubby Area (NSSA) debugging messages.
.. clicmd:: debug ospf6 route
Toggle OSPFv3 routes debugging messages.
.. clicmd:: debug ospf6 spf
Toggle OSPFv3 Shortest Path calculation debugging messages.
.. clicmd:: debug ospf6 zebra
Toggle OSPFv3 zebra interaction debugging messages.
.. clicmd:: debug ospf6 graceful-restart
Toggle OSPFv3 graceful-restart helper debugging messages.
Sample configuration
====================
Example of ospf6d configured on one interface and area:
.. code-block:: frr
interface eth0
ipv6 ospf6 area 0.0.0.0
ipv6 ospf6 instance-id 0
!
router ospf6
ospf6 router-id 212.17.55.53
area 0.0.0.0 range 2001:770:105:2::/64
!
Larger example with policy and various options set:
.. code-block:: frr
debug ospf6 neighbor state
!
interface fxp0
ipv6 ospf6 area 0.0.0.0
ipv6 ospf6 cost 1
ipv6 ospf6 hello-interval 10
ipv6 ospf6 dead-interval 40
ipv6 ospf6 retransmit-interval 5
ipv6 ospf6 priority 0
ipv6 ospf6 transmit-delay 1
ipv6 ospf6 instance-id 0
!
interface lo0
ipv6 ospf6 cost 1
ipv6 ospf6 hello-interval 10
ipv6 ospf6 dead-interval 40
ipv6 ospf6 retransmit-interval 5
ipv6 ospf6 priority 1
ipv6 ospf6 transmit-delay 1
ipv6 ospf6 instance-id 0
!
router ospf6
router-id 255.1.1.1
redistribute static route-map static-ospf6
!
access-list access4 permit 127.0.0.1/32
!
ipv6 access-list access6 permit 3ffe:501::/32
ipv6 access-list access6 permit 2001:200::/48
ipv6 access-list access6 permit ::1/128
!
ipv6 prefix-list test-prefix seq 1000 deny any
!
route-map static-ospf6 permit 10
match ipv6 address prefix-list test-prefix
set metric-type type-2
set metric 2000
!
line vty
access-class access4
ipv6 access-class access6
exec-timeout 0 0
!
|