Examples

The following is sample output from the showipospf command when entered without a specific OSPF process ID:

Router# show ip ospf
 
  Routing Process "ospf 201" with ID 10.0.0.1 and Domain ID 10.20.0.1 
  Supports only single TOS(TOS0) routes 
  Supports opaque LSA 
  SPF schedule delay 5 secs, Hold time between two SPFs 10 secs 
  Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs 
  LSA group pacing timer 100 secs 
  Interface flood pacing timer 55 msecs 
  Retransmission pacing timer 100 msecs 
  Number of external LSA 0. Checksum Sum 0x0      
  Number of opaque AS LSA 0. Checksum Sum 0x0      
  Number of DCbitless external and opaque AS LSA 0 
  Number of DoNotAge external and opaque AS LSA 0 
  Number of areas in this router is 2. 2 normal 0 stub 0 nssa 
  External flood list length 0 
     Area BACKBONE(0) 
         Number of interfaces in this area is 2 
         Area has message digest authentication 
         SPF algorithm executed 4 times 
         Area ranges are 
         Number of LSA 4. Checksum Sum 0x29BEB  
         Number of opaque link LSA 0. Checksum Sum 0x0      
         Number of DCbitless LSA 3 
         Number of indication LSA 0 
         Number of DoNotAge LSA 0 
         Flood list length 0 
     Area 172.16.26.0 
         Number of interfaces in this area is 0 
         Area has no authentication 
         SPF algorithm executed 1 times 
         Area ranges are 
            192.168.0.0/16 Passive Advertise  
         Number of LSA 1. Checksum Sum 0x44FD   
         Number of opaque link LSA 0. Checksum Sum 0x0      
         Number of DCbitless LSA 1 
         Number of indication LSA 1 
         Number of DoNotAge LSA 0 
         Flood list length 0

Cisco IOS Release 12.2(18)SXE, 12.0(31)S, and 12.4(4)T

The following is sample output from the showipospfcommand to verify that the BFD feature has been enabled for OSPF process 123. The relevant command output is shown in bold in the output.

Router# show ip ospf
 
 Routing Process "ospf 123" with ID 172.16.10.1
 Supports only single TOS(TOS0) routes
 Supports opaque LSA
 Supports Link-local Signaling (LLS)
 Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
 Maximum wait time between two consecutive SPFs 10000 msecs
 Incremental-SPF disabled
 Minimum LSA interval 5 secs
 Minimum LSA arrival 1000 msecs
 LSA group pacing timer 240 secs
 Interface flood pacing timer 33 msecs
 Retransmission pacing timer 66 msecs
 Number of external LSA 0. Checksum Sum 0x000000
 Number of opaque AS LSA 0. Checksum Sum 0x000000
 Number of DCbitless external and opaque AS LSA 0
 Number of DoNotAge external and opaque AS LSA 0
 Number of areas in this router is 1. 1 normal 0 stub 0 nssa
 External flood list length 0
   BFD is enabled
    Area BACKBONE(0)
        Number of interfaces in this area is 2
        Area has no authentication
        SPF algorithm last executed 00:00:03.708 ago
        SPF algorithm executed 27 times
        Area ranges are
        Number of LSA 3. Checksum Sum 0x00AEF1
        Number of opaque link LSA 0. Checksum Sum 0x000000
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0

The table below describes the significant fields shown in the display.

The following is an excerpt of output from the showipospf command when the OSPF Forwarding Address Suppression in Type-5 LSAs feature is configured:

Router# show ip ospf
.
.
.
Area 2
   Number of interfaces in this area is 4
   It is a NSSA area
   Perform type-7/type-5 LSA translation, suppress forwarding address
.
.
.
Routing Process "ospf 1" with ID 192.168.0.1
 Supports only single TOS(TOS0) routes
 Supports opaque LSA
 Supports Link-local Signaling (LLS)
 Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
 Maximum wait time between two consecutive SPFs 10000 msecs
 Incremental-SPF disabled
 Minimum LSA interval 5 secs
 Minimum LSA arrival 1000 msecs
 LSA group pacing timer 240 secs
 Interface flood pacing timer 33 msecs
 Retransmission pacing timer 66 msecs
 Number of external LSA 0. Checksum Sum 0x0     
 Number of opaque AS LSA 0. Checksum Sum 0x0     
 Number of DCbitless external and opaque AS LSA 0
 Number of DoNotAge external and opaque AS LSA 0
 Number of areas in this router is 0. 0 normal 0 stub 0 nssa
 External flood list length 0

The table below describes the significant fields shown in the display.

The following is sample output from the showipospf command. In this example, the user had configured the redistributionmaximum-prefix command to set a limit of 2000 redistributed routes. SPF throttling was configured with the timersthrottlespf command.

Router# show ip ospf 1
 Routing Process "ospf 1" with ID 10.0.0.1
 Supports only single TOS(TOS0) routes
 Supports opaque LSA
 Supports Link-local Signaling (LLS)
 It is an autonomous system boundary router
 Redistributing External Routes from,
    static, includes subnets in redistribution
    Maximum limit of redistributed prefixes 2000
    Threshold for warning message 75%
Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
Maximum wait time between two consecutive SPFs 10000 msecs

The table below describes the significant fields shown in the display.

The following is sample output from the showipospf command. In this example, the user had configured LSA throttling, and those lines of output are displayed in bold.

Router# show ip ospf 1
Routing Process "ospf 4" with ID 10.10.24.4
 Supports only single TOS(TOS0) routes
 Supports opaque LSA
 Supports Link-local Signaling (LLS)
 Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
 Maximum wait time between two consecutive SPFs 10000 msecs
 Incremental-SPF disabled
 Initial LSA throttle delay 100 msecs
 Minimum hold time for LSA throttle 10000 msecs
 
Maximum wait time for LSA throttle 45000 msecs
Minimum LSA arrival 1000 msecs
 LSA group pacing timer 240 secs
 Interface flood pacing timer 33 msecs
 Retransmission pacing timer 66 msecs
 Number of external LSA 0. Checksum Sum 0x0     
 Number of opaque AS LSA 0. Checksum Sum 0x0     
 Number of DCbitless external and opaque AS LSA 0
 Number of DoNotAge external and opaque AS LSA 0
 Number of areas in this router is 1. 1 normal 0 stub 0 nssa
 External flood list length 0
    Area 24
        Number of interfaces in this area is 2
        Area has no authentication
        SPF algorithm last executed 04:28:18.396 ago
        SPF algorithm executed 8 times
        Area ranges are
        Number of LSA 4. Checksum Sum 0x23EB9 
        Number of opaque link LSA 0. Checksum Sum 0x0     
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0

The following is sample showipospfcommand. In this example, the user had configured the redistributionmaximum-prefix command to set a limit of 2000 redistributed routes. SPF throttling was configured with the timersthrottlespf command.

Router# show ip ospf 1
 Routing Process "ospf 1" with ID 192.168.0.0
 Supports only single TOS(TOS0) routes
 Supports opaque LSA
 Supports Link-local Signaling (LLS)
 It is an autonomous system boundary router
 Redistributing External Routes from,
    static, includes subnets in redistribution
    Maximum limit of redistributed prefixes 2000
    Threshold for warning message 75%
Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
 Maximum wait time between two consecutive SPFs 10000 msecs

The table below describes the significant fields shown in the display.

The following is sample output from the showipospf command. In this example, the user had configured LSA throttling, and those lines of output are displayed in bold.

Router# show ip ospf 1
Routing Process "ospf 4" with ID 10.10.24.4
 Supports only single TOS(TOS0) routes
 Supports opaque LSA
 Supports Link-local Signaling (LLS)
 Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
 Maximum wait time between two consecutive SPFs 10000 msecs
 Incremental-SPF disabled
 Initial LSA throttle delay 100 msecs
 Minimum hold time for LSA throttle 10000 msecs
 Maximum wait time for LSA throttle 45000 msecs
Minimum LSA arrival 1000 msecs
 LSA group pacing timer 240 secs
 Interface flood pacing timer 33 msecs
 Retransmission pacing timer 66 msecs
 Number of external LSA 0. Checksum Sum 0x0     
 Number of opaque AS LSA 0. Checksum Sum 0x0     
 Number of DCbitless external and opaque AS LSA 0
 Number of DoNotAge external and opaque AS LSA 0
 Number of areas in this router is 1. 1 normal 0 stub 0 nssa
 External flood list length 0
    Area 24
        Number of interfaces in this area is 2
        Area has no authentication
        SPF algorithm last executed 04:28:18.396 ago
        SPF algorithm executed 8 times
        Area ranges are
        Number of LSA 4. Checksum Sum 0x23EB9 
        Number of opaque link LSA 0. Checksum Sum 0x0     
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0

Examples

The following is sample output from the showipospfborder-routers command:

Router# show ip ospf border-routers
OSPF Process 109 internal Routing Table
Codes:  i - Intra-area route, I - Inter-area route
i 192.168.97.53   [10] via 172.16.1.53,   Serial0, ABR,  Area 0.0.0.3, SPF 3
i 192.168.103.51  [10] via 192.168.96.51, Serial0, ABR,  Area 0.0.0.3, SPF 3
I 192.168.103.52  [22] via 192.168.96.51, Serial0, ASBR, Area 0.0.0.3, SPF 3
I 192.168.103.52  [22] via 172.16.1.53,   Serial0, ASBR, Area 0.0.0.3, SPF 3

The table below describes the significant fields shown in the display.

Examples

The following is sample output from the showipospfdatabase command when no arguments or keywords are used:

Router# show ip ospf database
OSPF Router with id(192.168.239.66) (Process ID 300)
                 Displaying Router Link States(Area 0.0.0.0)
  Link ID       ADV Router    Age        Seq#     Checksum  Link count
172.16.21.6   172.16.21.6    1731    0x80002CFB    0x69BC       8
172.16.21.5   172.16.21.5    1112    0x800009D2    0xA2B8       5
172.16.1.2    172.16.1.2     1662    0x80000A98    0x4CB6       9
172.16.1.1    172.16.1.1     1115    0x800009B6    0x5F2C       1
172.16.1.5    172.16.1.5     1691    0x80002BC     0x2A1A       5
172.16.65.6   172.16.65.6    1395    0x80001947    0xEEE1       4
172.16.241.5  172.16.241.5   1161    0x8000007C    0x7C70       1
172.16.27.6   172.16.27.6    1723    0x80000548    0x8641       4
172.16.70.6   172.16.70.6    1485    0x80000B97    0xEB84       6
                Displaying Net Link States(Area 0.0.0.0)
  Link ID       ADV Router      Age        Seq#        Checksum
172.16.1.3  192.168.239.66     1245    0x800000EC      0x82E
                Displaying Summary Net Link States(Area 0.0.0.0)
  Link ID       ADV Router       Age        Seq#        Checksum
172.16.240.0   172.16.241.5    1152      0x80000077      0x7A05
172.16.241.0   172.16.241.5    1152      0x80000070      0xAEB7
172.16.244.0   172.16.241.5    1152      0x80000071      0x95CB

The table below describes the significant fields shown in the display.

The following is sample output from the showipospfdatabasecommand with the asbr-summarykeyword:

Router# show ip ospf database asbr-summary
OSPF Router with id(192.168.239.66) (Process ID 300)
                Displaying Summary ASB Link States(Area 0.0.0.0)
	LS age: 1463
	Options: (No TOS-capability)
	LS Type: Summary Links(AS Boundary Router)
	Link State ID: 172.16.245.1 (AS Boundary Router address)
	Advertising Router: 172.16.241.5
	LS Seq Number: 80000072
	Checksum: 0x3548
	Length: 28
	Network Mask: 0.0.0.0 TOS: 0  Metric: 1

The table below describes the significant fields shown in the display.

The following is sample output from the showipospfdatabasecommand with the externalkeyword:

Router# show ip ospf database external
OSPF Router with id(192.168.239.66) (Autonomous system 300)
                   Displaying AS External Link States
LS age: 280
Options: (No TOS-capability)
LS Type: AS External Link
Link State ID: 10.105.0.0 (External Network Number)
Advertising Router: 172.16.70.6
LS Seq Number: 80000AFD
Checksum: 0xC3A
Length: 36
Network Mask: 255.255.0.0
     		Metric Type: 2 (Larger than any link state path)
     		TOS: 0
     		Metric: 1
     		Forward Address: 0.0.0.0
     		External Route Tag: 0

The table below describes the significant fields shown in the display.

The following is sample output from the showipospfdatabasecommand with the networkkeyword:

Router# show ip ospf database network
 OSPF Router with id(192.168.239.66) (Process ID 300)
                Displaying Net Link States(Area 0.0.0.0)
LS age: 1367
Options: (No TOS-capability)
LS Type: Network Links
Link State ID: 172.16.1.3 (address of Designated Router)
Advertising Router: 192.168.239.66
LS Seq Number: 800000E7
Checksum: 0x1229
Length: 52
Network Mask: 255.255.255.0
        Attached Router: 192.168.239.66
        Attached Router: 172.16.241.5
        Attached Router: 172.16.1.1
        Attached Router: 172.16.54.5
        Attached Router: 172.16.1.5

The table below describes the significant fields shown in the display.

The following is sample output from the showipospfdatabasecommand with the routerkeyword:

Router# show ip ospf database router
OSPF Router with id(192.168.239.66) (Process ID 300)
Displaying Router Link States(Area 0.0.0.0)
LS age: 1176
Options: (No TOS-capability)
LS Type: Router Links
Link State ID: 172.16.21.6
Advertising Router: 172.16.21.6
LS Seq Number: 80002CF6
Checksum: 0x73B7
Length: 120
AS Boundary Router
155   Number of Links: 8
Link connected to: another Router (point-to-point)
(link ID) Neighboring Router ID: 172.16.21.5
(Link Data) Router Interface address: 172.16.21.6
Number of TOS metrics: 0
TOS 0 Metrics: 2

The table below describes the significant fields shown in the display.

The following is sample output from showipospfdatabasecommand with the summarykeyword:

Router# show ip ospf database summary
       OSPF Router with id(192.168.239.66) (Process ID 300)
                Displaying Summary Net Link States(Area 0.0.0.0)
LS age: 1401
Options: (No TOS-capability)
LS Type: Summary Links(Network)
Link State ID: 172.16.240.0 (summary Network Number)
Advertising Router: 172.16.241.5
LS Seq Number: 80000072
Checksum: 0x84FF
Length: 28
Network Mask: 255.255.255.0   TOS: 0  Metric: 1

The table below describes the significant fields shown in the display.

The following is sample output from showipospfdatabasecommand with the database-summarykeyword:

Router# show ip ospf database database-summary
OSPF Router with ID (10.0.0.1) (Process ID 1)
Area 0 database summary
  LSA Type      Count    Delete   Maxage
  Router        3        0        0
  Network       0        0        0
  Summary Net   0        0        0
  Summary ASBR  0        0        0
  Type-7 Ext    0        0        0
    Self-originated Type-7  0
Opaque Link     0        0        0
  Opaque Area   0        0        0
  Subtotal      3        0        0
Process 1 database summary
  LSA Type      Count    Delete   Maxage
  Router        3        0        0
  Network       0        0        0
  Summary Net   0        0        0
  Summary ASBR  0        0        0
  Type-7 Ext    0        0        0
  Opaque Link   0        0        0
  Opaque Area   0        0        0
  Type-5 Ext    0        0        0
      Self-originated Type-5  200
Opaque AS       0        0        0
  Total       203        0        0

The table below describes the significant fields shown in the display.

Examples

The following is sample output from the show ip ospf eventscommand. The fields are self-explanatory.

Router# show ip ospf events
OSPF Router with ID (4.4.4.4) (Process ID 1)
1    Jan 22 01:51:03.090: DB free:  1.1.1.10x6CF250 103
2    Jan 22 01:51:03.090: delete MAXAGE lsa:  0x666CF2500x666CF250
3    Jan 22 01:50:56.086: DB free:  1.1.1.10x6025D4 103
4    Jan 22 01:50:56.086: DB free:  1.1.1.10x6D59A0 103
5    Jan 22 01:50:56.082: Insert MAXAGE lsa:  0x666D59A01.1.1.1
6    Jan 22 01:50:55.590: Timer Exp:  if_ack_delayed0x64782774
7    Jan 22 01:50:55.590: Timer Exp:  if_ack_delayed0x64786CB4
8    Jan 22 01:50:55.586: Timer Exp:  if_ack_delayed0x647CD1A8
9    Jan 22 01:50:55.586: Timer Exp:  if_ack_delayed0x647C8134
10   Jan 22 01:50:53.586: Insert MAXAGE lsa:  0x666025D41.1.1.1
11   Jan 22 01:50:53.586: Rcv Changed Type-3 LSA, LSID 1.1.1.1, Adv-Rtr 3.3.3.3, Seq# 80000002, Age 3600, Area 1
12   Jan 22 01:50:53.586: Insert MAXAGE lsa:  0x666D59A01.1.1.1
13   Jan 22 01:50:53.586: Generate Changed Type-3 LSA, LSID 1.1.1.1, Seq# 80000002, Age 3600, Area 0
14   Jan 22 01:50:53.290: End of SPF, Topo Base, SPF time 4ms, next wait-interval 200ms
15   Jan 22 01:50:53.290: Generic:  ospf_external_route_sync0x1
16   Jan 22 01:50:53.290: Generic:  ospf_external_route_sync0x0
17   Jan 22 01:50:53.290: Generic:  ospf_external_route_sync0x0
18   Jan 22 01:50:53.290: Starting External processing, Topo Base in area 1
19   Jan 22 01:50:53.290: Starting External processing, Topo Base in area 0
20   Jan 22 01:50:53.286: Starting External processing, Topo Base
21   Jan 22 01:50:53.286: Generic:  ospf_inter_route_sync0x0
22   Jan 22 01:50:53.286: Starting summary processing, Topo Base, Area 0
23   Jan 22 01:50:53.286: Generic:  ospf_inter_route_sync0x1
24   Jan 22 01:50:53.286: Generic:  post_spf_intra0x0
25   Jan 22 01:50:53.286: Generic:  ospf_intra_route_sync0x1
26   Jan 22 01:50:53.286: Generic:  update_rtr_route0x1
27   Jan 22 01:50:53.286: Generic:  update_rtr_route0x1
28   Jan 22 01:50:53.286: Generic:  update_rtr_route0x1
29   Jan 22 01:50:53.286: Starting Intra-Area SPF, Topo Base, Area 1, spf_type Full
30   Jan 22 01:50:53.286: Starting SPF, Topo Base, wait-interval 200ms
31   Jan 22 01:50:53.118: Rcv New Type-3 LSA, LSID 1.1.1.1, Adv-Rtr 3.3.3.3, Seq# 80000001, Age 1, Area 1
32   Jan 22 01:50:53.118: DB add:  1.1.1.10x6025D4 103
33   Jan 22 01:50:53.090: Insert MAXAGE lsa:  0x666CF2501.1.1.1
34   Jan 22 01:50:53.090: Rcv Changed Type-3 LSA, LSID 1.1.1.1, Adv-Rtr 3.3.3.3, Seq# 80000002, Age 3600, Area 0
35   Jan 22 01:50:53.086: Rcv Changed Type-1 LSA, LSID 1.1.1.1, Adv-Rtr 1.1.1.1, Seq# 80000008, Age 2, Area 1
36   Jan 22 01:50:53.086: Schedule SPF, Topo Base, Area 1, spf-type Full, Change in LSA Type R, LSID 1.1.1.1, Adv-Rtr 1.1.1.1
37   Jan 22 01:50:46.310: Timer Exp:  exfaddr0x0
38   Jan 22 01:50:16.310: Timer Exp:  exfaddr0x0

Examples

The following example displays summary information about LFA FRR status, including the current tiebreaker policy:

Router# show ip ospf fast-reroute
 
            OSPF Router with ID (192.1.1.1) (Process ID 1)
Loop-free Fast Reroute protected prefixes:
           Area        Topology name   Priority
              1                 Base        Low
   172.69.69.66                 Base       High
    AS external                 Base        Low
  Repair path selection policy tiebreaks:
     23  srlg
     34  lowest-metric
     67  primary-path (required)
    256  load-sharing
Last SPF calculation started 00:00:11 ago and was running for 20 ms.

The table below describes the significant fields shown in the display.

The following example displays information about prefixes that are protected by the OSPFv2 loop-free alternate FRR feature. It displays information on the number of prefixes by area and by priority (high or low) and how many are protected, that is, have repair paths configured.

Router# show ip ospf fast-reroute prefix-summary
 
            OSPF Router with ID (192.1.1.1) (Process ID 1)
                        Base Topology (MTID 0)
Area 0:
Interface        Protected   Primary paths   Protected paths   Percent protected
                             All High  Low    All High  Low      All High  Low
Loopback0              Yes     0    0    0      0    0    0       0%   0%   0%
Ethernet0/3            Yes     1    1    0      0    0    0       0%   0%   0%
Ethernet0/2            Yes     3    2    1      2    1    1      66%  50% 100%
Ethernet0/1            Yes     2    1    1      2    1    1     100% 100% 100%
Ethernet0/0            Yes     4    2    2      4    2    2     100% 100% 100%
Area total:                   10    6    4      8    4    4      80%  66% 100%
Process total:                10    6    4      8    4    4      80%  66% 100%

The following example displays information about tunnel interfaces created by remote LFA FRR:

Router# show ip ospf fast-reroute remote-lfa tunnels             

			        OSPF Router with ID (192.168.1.1) (Process ID 1)
                      Area with ID (0)
                     Base Topology (MTID 0)

Interface MPLS-Remote-Lfa3
   Tunnel type: MPLS-LDP
   Tailend router ID: 192.168.3.3
   Termination IP address: 192.168.3.3
   Outgoing interface: Ethernet0/0
   First hop gateway: 192.168.14.4
   Tunnel metric: 20
   Protects:
     192.168.12.2 Ethernet0/1, total metric 30

Examples

The following is sample output of the showipospfflood-list command:

Router# show ip ospf flood-list ethernet 1
 Interface Ethernet1, Queue length 20
 Link state flooding due in 12 msec
 
 Type  LS ID            ADV RTR           Seq NO      Age    Checksum
    5  10.2.195.0       192.168.0.163     0x80000009  0      0xFB61  
    5  10.1.192.0       192.168.0.163     0x80000009  0      0x2938  
    5  10.2.194.0       192.168.0.163     0x80000009  0      0x757   
    5  10.1.193.0       192.168.0.163     0x80000009  0      0x1E42  
    5  10.2.193.0       192.168.0.163     0x80000009  0      0x124D  
    5  10.1.194.0       192.168.0.163     0x80000009  0      0x134C 

The table below describes the significant fields shown in the display.

Examples

The following is sample output from the show ip ospf interface command when Ethernet interface 0/0 is specified. It shows that LFA and FRR is enabled on the interface and that it can be both a protected and a protecting interface.

Router# show ip ospf interface ethernet 0/0
Ethernet0/0 is up, line protocol is up
  Internet Address 192.168.254.202/24, Area 0
  Process ID 1, Router ID 192.168.99.1, Network Type BROADCAST, Cost: 10
  Topology-MTID    Cost    Disabled    Shutdown      Topology Name
        0           10        no          no            Base
  Transmit Delay is 1 sec, State DR, Priority 1
  Designated Router (ID) 192.168.99.1, Interface address 192.168.254.202
  Backup Designated router (ID) 192.168.254.10, Interface address 192.168.254.10
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    oob-resync timeout 40
    Hello due in 00:00:05
  Supports Link-local Signaling (LLS)
  Cisco NSF helper support enabled
  IETF NSF helper support enabled
  Can be protected by per-prefix Loop-free FastReroute
  Can be used for per-prefix Loop-free FastReroute repair paths
  Index 1/1, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 1, maximum is 1
  Last flood scan time is 0 msec, maximum is 0 msec
  Neighbor Count is 1, Adjacent neighbor count is 1 
    Adjacent with neighbor 192.168.254.10  (Backup Designated Router)
  Suppress hello for 0 neighbor(s)

Cisco IOS Release 12.2(33)SRB

The following sample output from the show ip ospf interface brief topology VOICE command shows a summary of information, including a confirmation that the Multitopology Routing (MTR) VOICE topology is configured in the interface configuration:

Router# show ip ospf interface brief topology VOICE
VOICE Topology (MTID 10)
Interface    PID   Area            IP Address/Mask    Cost  State Nbrs F/C
Lo0          1     0               10.0.0.2/32        1     LOOP  0/0
Se2/0        1     0               10.1.0.2/30        10    P2P   1/1

The following sample output from the show ip ospf interface brief topology VOICE command displays details of the MTR VOICE topology for the interface. When the command is entered without the brief keyword, more information is displayed.

Router# show ip ospf interface topology VOICE
                 VOICE Topology (MTID 10)
Loopback0 is up, line protocol is up
   Internet Address 10.0.0.2/32, Area 0
   Process ID 1, Router ID 10.0.0.2, Network Type LOOPBACK
   Topology-MTID    Cost    Disabled    Shutdown      Topology Name
         10          1         no          no            VOICE
   Loopback interface is treated as a stub Host Serial2/0 is up, line protocol is up
   Internet Address 10.1.0.2/30, Area 0
   Process ID 1, Router ID 10.0.0.2, Network Type POINT_TO_POINT
   Topology-MTID    Cost    Disabled    Shutdown      Topology Name
         10          10        no          no            VOICE
   Transmit Delay is 1 sec, State POINT_TO_POINT
   Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
     oob-resync timeout 40
     Hello due in 00:00:03
   Supports Link-local Signaling (LLS)
   Cisco NSF helper support enabled
   IETF NSF helper support enabled
   Index 1/1, flood queue length 0
   Next 0x0(0)/0x0(0)
   Last flood scan length is 1, maximum is 1
   Last flood scan time is 0 msec, maximum is 0 msec
   Neighbor Count is 1, Adjacent neighbor count is 1
     Adjacent with neighbor 10.0.0.1
   Suppress hello for 0 neighbor(s)

Cisco IOS Release 12.2(33)SRC

The following sample output from the show ip ospf interface command displays details about the configured Time-to-Live (TTL) limits:

Router# show ip ospf interface ethernet 0
.
.
.
Strict TTL checking enabled
! or a message similar to the following is displayed
Strict TTL checking enabled, up to 4 hops allowed
.
.
.

The table below describes the significant fields shown in the displays.

Examples

The following is sample output from the show ip ospf max-metriccommand. The fields are self-explanatory.

Router# show ip ospf
 max-metric
OSPF Router with ID (190.0.30.1) (Process ID 2) 
Base Topology (MTID 0)Start time: 3d12h, Time elapsed: 00:01:07.964
Originating router-LSAs with maximum metric
Condition: always, State: active
Advertise external-LSAs with metric 16711680

Examples

The following sample output from theshowipospfneighbor command shows a single line of summary information for each neighbor:

Router# show ip ospf neighbor
Neighbor ID 		Pri   State        Dead Time     Address         Interface
10.199.199.137  1    FULL/DR       0:00:31    192.168.80.37      Ethernet0
172.16.48.1     1    FULL/DROTHER  0:00:33    172.16.48.1        Fddi0
172.16.48.200   1    FULL/DROTHER  0:00:33    172.16.48.200      Fddi0
10.199.199.137  5    FULL/DR       0:00:33    172.16.48.189      Fddi0

The following is sample output showing summary information about the neighbor that matches the neighbor ID:

Router# show ip ospf neighbor 10.199.199.137
 
Neighbor 10.199.199.137, interface address 192.168.80.37
    In the area 0.0.0.0 via interface Ethernet0
    Neighbor priority is 1, State is FULL
    Options 2
    Dead timer due in 0:00:32
    Link State retransmission due in 0:00:04
 Neighbor 10.199.199.137, interface address 172.16.48.189
    In the area 0.0.0.0 via interface Fddi0
    Neighbor priority is 5, State is FULL
    Options 2
    Dead timer due in 0:00:32
    Link State retransmission due in 0:00:03

If you specify the interface along with the neighbor ID, the system displays the neighbors that match the neighbor ID on the interface, as in the following sample display:

Router# show ip ospf neighbor ethernet 0 10.199.199.137
 
Neighbor 10.199.199.137, interface address 192.168.80.37
    In the area 0.0.0.0 via interface Ethernet0
    Neighbor priority is 1, State is FULL
    Options 2
    Dead timer due in 0:00:37
    Link State retransmission due in 0:00:04

You can also specify the interface without the neighbor ID to show all neighbors on the specified interface, as in the following sample display:

Router# show ip ospf neighbor fddi 0
   ID          Pri   State        Dead Time     Address         Interface
172.16.48.1     1    FULL/DROTHER  0:00:33    172.16.48.1       Fddi0
172.16.48.200   1    FULL/DROTHER  0:00:32    172.16.48.200     Fddi0
10.199.199.137  5    FULL/DR       0:00:32    172.16.48.189     Fddi0

The following is sample output from theshowipospfneighbordetail command:

Router# show ip ospf neighbor detail
 
Neighbor 192.168.5.2, interface address 10.225.200.28
    In the area 0 via interface GigabitEthernet1/0/0
    Neighbor priority is 1, State is FULL, 6 state changes
    DR is 10.225.200.28 BDR is 10.225.200.30
    Options is 0x42
    LLS Options is 0x1 (LR), last OOB-Resync 00:03:08 ago
    Dead timer due in 00:00:36
    Neighbor is up for 00:09:46
   Index 1/1, retransmission queue length 0, number of retransmission 1
    First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0)
    Last retransmission scan length is 1, maximum is 1
    Last retransmission scan time is 0 msec, maximum is 0 msec

The table below describes the significant fields shown in the displays.

Cisco IOS Release 12.2(33)SRC

The following is sample output from theshowipospfneighbor command showing a single line of summary information for each neighbor. If one OSPF neighbor has enabled TTL security, the other side of the connection will show the neighbor in the INIT state.

Router# show ip ospf neighbor
Neighbor ID 			Pri   State        Dead Time     Address         Interface
10.199.199.137  1    FULL/DR       0:00:31    192.168.80.37      Ethernet0
172.16.48.1     1    FULL/DROTHER  0:00:33    172.16.48.1        Fddi0
172.16.48.200   1    FULL/DROTHER  0:00:33    172.16.48.200      Fddi0
10.199.199.137  5    FULL/DR       0:00:33    172.16.48.189      Fddi0
172.16.1.201		1	INIT/DROTHER			00.00.35		10.1.1.201			Ethernet0/0

The following sample output from the show ip ospf neighbor command shows the network from the neighbor's point of view:

Router# show ip ospf neighbor 192.0.2.1 fast-reroute
            OSPF Router with ID (192.1.1.1) (Process ID 1)

                     Area with ID (0)

Neighbor with Router ID 192.0.2.1:
  Reachable over:
    Ethernet0/0, IP address 192.0.2.1, cost 10

  SPF was executed 1 times, distance to computing router 10

  Router distance table:
           192.1.1.1   i  [10]
           192.0.2.1   i  [0]
           192.3.3.3   i  [10]
           192.4.4.4   i  [20]
           192.5.5.5   i  [20]

  Network LSA distance table:
      192.2.12.2   i  [10]
      192.2.13.3   i  [20]
      192.2.14.4   i  [20]
      192.2.15.5   i  [20]

Examples

The following is sample output from the show ip ospf nsfcommand. The fields are self-explanatory.

Router# show ip ospf
 nsf
Routing Process "ospf 2" 
 Non-Stop Forwarding enabled
 IETF NSF helper support enabled
 Cisco NSF helper support enabled 
 OSPF restart state is NO_RESTART
Handle 1786466308, Router ID 192.0.2.1, checkpoint Router ID 0.0.0.0
Config wait timer interval 10, timer not running
Dbase wait timer interval 120, timer not running

Examples

The following sample output from the show ip ospf nsrcommand shows that OSPF on the standby RP is fully synchronized and ready to continue operation if the active RP fails or if a manual switchover is performed. NSR is configured and enabled for the "ospf 1" OSPF routing process. The fields are self-explanatory.

Router# show ip ospf
 1 nsr
Active RP  
Operating in duplex mode  
Redundancy state: ACTIVE  
Peer redundancy state: STANDBY HOT  
Checkpoint peer ready  
Checkpoint messages enabled  
ISSU negotiation complete  
ISSU versions compatible   
Routing Process "ospf 1" with ID 10.1.1.100  
NSR configured  
Checkpoint message sequence number: 6360  
Standby synchronization state: synchronized
Bulk sync operations:  1  
Next sync check time:  18:48:27.097 PST Fri Dec 10 2010  
LSA Count: 3301, Checksum Sum 0x06750217

Examples

The following is sample output from the showipospfrequest-list command:

Router# show ip ospf request-list serial 0
 
             OSPF Router with ID (192.168.1.11) (Process ID 1)
 
  Neighbor 192.168.1.12, interface Serial0 address 172.16.1.12
 
  Type  LS ID           ADV RTR         Seq NO      Age    Checksum
     1  192.168.1.12      192.168.1.12      0x8000020D  8      0x6572

The table below describes the significant fields shown in the displays.

Examples

The following is sample output from the showipospfretransmission-list command:

Router# show ip ospf retransmission-list serial 0
 
             OSPF Router with ID (192.168.1.12) (Process ID 1)
 
  Neighbor 192.168.1.11, interface Serial0 address 172.16.1.11
  Link state retransmission due in 3764 msec, Queue length 2
 
  Type  LS ID             ADV RTR           Seq NO      Age    Checksum
     1  192.168.1.12      192.168.1.12      0x80000210  0      0xB196

The table below describes the significant fields shown in the displays.

Examples

The following example displays information about locally redistributed routes:

Router# show ip ospf 1 rib redistribution 192.168.240.0
OSPF Redistribution for Process 1
192.168.240/20, metric 0, tag 0, from OSPF Router 130
 Attributes 0x1000220, event 1
  via Ethernet0/0
OSPF Redistribution Process 130

The table below describes the significant fields shown in the display.

The following example displays information about primary paths and the LFA and FRR repair paths protecting them:

Router# show ip ospf 1 rib
OSPF Router with ID (192.1.1.1) (Process ID 1)
                 Base Topology (MTID 0)
OSPF local RIB
Codes: * - Best, > - Installed in global RIB

*   192.168.15.0/24, Intra, cost 10, area 0, Connected
       via 192.168.15.1, Ethernet0/3
*>  192.168.23.0/24, Intra, cost 20, area 0
       via 192.168.12.2, Ethernet0/0
       repair path via 192.168.13.3, Ethernet0/1, cost 20
       via 192.168.13.3, Ethernet0/1
       repair path via 192.168.12.2, Ethernet0/0, cost 20
*>  192.168.26.0/24, Intra, cost 20, area 0
       via 192.168.12.2, Ethernet0/0
       repair path via 192.168.13.3, Ethernet0/1, cost 30
*>  192.168.46.0/24, Intra, cost 30, area 0
       via 192.168.12.2, Ethernet0/0
       repair path via 192.168.13.3, Ethernet0/1, cost 40

Examples

The following example shows sample output from the show ip ospf sham-links command for a PE router in the VPN backbone:

Router1# show ip ospf sham-links
Sham Link OSPF_SL0 to address 10.44.0.1 is up
 Area 120 source address 10.0.0.1
   Run as demand circuit
   DoNotAge LSA allowed., Cost of using 1
   Transmit Delay is 1 sec, State POINT_TO_POINT,
   Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
     Hello due in 00:00:09
     Adjacency State FULL (Hello suppressed)
     Index 2/2, retransmission queue length 0, number of retransmission 27
     First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0)
     Last retransmission scan length is 0, maximum is 2
     Last retransmission scan time is 0 msec, maximum is 0 msec

Examples

The following is sample output from the showipospfstatisticscommand that shows a single line of information for each SPF calculation:

Router# show ip ospf statistics 
OSPF process ID 200
------------------------------------------
  Area 0: SPF algorithm executed 10 times
  Area 200: SPF algorithm executed 8 times
  Summary OSPF SPF statistic
  SPF calculation time
Delta T    Intra   D-Intra   Summ   D-Summ   Ext   D-Ext   Total   Reason
08:17:16   0       0         0      0       0      0       0       R, 
08:16:47   0       0         0      0       0      0       0       R, N, 
08:16:37   0       0         0      0       0      0       0       R, X
00:04:40   208     40        208    44      220    0       720     R, N, SN, X
00:03:15   0       112       4      108     8      96      328     R, N, SN, X
00:02:55   164     40        176    44      188    0       612     R, N, SN, X
00:01:49   0       4         4      0       4      4       16      R, N, SN, X
00:01:48   0       0         4      0       4      0       12      R, N, SN, SA, X
00:01:43   0       0         4      0       4      0       8       R, 
00:00:53   164     40        176    44      188    0       612     R, N, SN, X 

The table below describes the significant fields shown in the display.

The following is sample output from the showipospfstatisticscommand with the detail keyword entered to show the statistics separately for a specific area:

Router# show ip ospf statistics detail
SPF 7 executed 2d17h ago, SPF type Full
  SPF calculation time (in msec):
  SPT   Intra   D-Intr   Summ   D-Summ   Ext7   D-Ext7   Total
  0     0       0        0      0        0      0        0
  LSIDs processed R:4 N:1 Stub:5 SN:17 SA:1 X7:0
  Change record R, 
  LSIDs changed 1
  Last 10 LSIDs:
2.0.0.202(R)

The table below describes the significant fields shown in the display.

Examples

The following is sample output from the showipospfsummary-address command:

Router# show ip ospf summary-address
 
OSPF Process 2, Summary-address
10.2.0.0/255.255.0.0 Metric -1, Type 0, Tag 0
10.2.0.0/255.255.0.0 Metric -1, Type 0, Tag 10

The table below describes the significant fields shown in the displays.

Examples

The following is sample output from the showipospftimersrate-limit command:

Router# show ip ospf timers rate-limit
LSAID: 10.1.1.1    Type: 1   Adv Rtr: 172.16.2.2 Due in: 00:00:00.028
LSAID: 172.16.4.1   Type: 3   Adv Rtr: 172.16.2.2 Due in: 00:00:00.028

The table below describes the significant fields shown in the display.

Examples

Cisco IOS Release 12.0(28)S

The following is sample output from the show ip ospf traffic command.

Router# show ip ospf traffic
OSPF statistics:
  Rcvd: 5300 total, 730 checksum errors
        333 hello, 10 database desc, 3 link state req
        24 link state updates, 13 link state acks
  Sent: 264 total
        222 hello, 12 database desc, 3 link state req
        17 link state updates, 12 link state acks
           OSPF Router with ID (10.0.1.2) (Process ID 100)
OSPF queues statistic for process ID 100:
  OSPF Hello queue size 0, no limit, max size 3
  OSPF Router queue size 0, limit 200, drops 0, max size 3
Interface statistics:
    Interface Loopback0
OSPF packets received/sent
     Invalid  Hellos   DB-des   LS-req   LS-upd   LS-ack   Total
Rx:  0        0        0        0        0        0        0
Tx:  0        0        0        0        0        0        0
OSPF header errors
  Length 0, Checksum 0, Version 0, Bad Source 0, 
  No Virtual Link 0, Area Mismatch 0, No Sham Link 0, 
  Self Originated 0, Duplicate ID 0, LLS 0, 
  Authentication 0,
OSPF LSA errors
  Type 0, Length 0, Data 0, Checksum 0, 
     Interface Serial3/0
  OSPF packets received/sent
      Invalid  Hellos   DB-des   LS-req   LS-upd   LS-ack   Total
Rx:   0        111      3        1        7        6        128
Tx:   0        111      4        1        12       5        133
  OSPF header errors
    Length 0, Checksum 0, Version 0, Bad Source 0, 
    No Virtual Link 0, Area Mismatch 0, No Sham Link 0, 
    Self Originated 0, Duplicate ID 0, LLS 0, 
    Authentication 0, 
  OSPF LSA errors
    Type 0, Length 0, Data 0, Checksum 0, 
    Interface Serial2/0
  OSPF packets received/sent
      Invalid  Hellos   DB-des   LS-req   LS-upd   LS-ack   Total
Rx:   0        0        0        0        0        0        0
Tx:   0        0        0        0        0        0        0
  OSPF header errors
    Length 0, Checksum 0, Version 0, Bad Source 0, 
    No Virtual Link 0, Area Mismatch 0, No Sham Link 0, 
    Self Originated 0, Duplicate ID 0, LLS 0, 
    Authentication 0, 
OSPF LSA errors
  Type 0, Length 0, Data 0, Checksum 0, 
  Interface Ethernet0/0
  OSPF packets received/sent
       Invalid  Hellos   DB-des   LS-req   LS-upd   LS-ack   Total
Rx:    0        222      7        2        17       7        255
Tx:    0        111      8        2        5        7        133
OSPF header errors
  Length 0, Checksum 730, Version 800, Bad Source 0, 
  No Virtual Link 0, Area Mismatch 0, No Sham Link 0, 
  Self Originated 3387, Duplicate ID 0, LLS 0, 
  Authentication 0, 
OSPF LSA errors
  Type 0, Length 0, Data 0, Checksum 0, 
Summary traffic statistics for process ID 100:
  Rcvd: 5300 total, 4917 errors
        333 hello, 10 database desc, 3 link state req
        24 link state upds, 13 link state acks, 0 invalid
  Sent: 266 total
        222 hello, 12 database desc, 3 link state req
        17 link state upds, 12 link state acks, 0 invalid

The table below describes the significant fields shown in the display.

Cisco IOS Release 12.2(33)SRC

The following is sample output from the show ip ospf traffic command. The output has been modified to include the number of packets dropped due a TTL security check.

Router# show ip ospf traffic
.
.
.
OSPF header errors
  Length 0, Checksum 0, Version 0, Bad Source 0, 
  No Virtual Link 0, Area Mismatch 0, No Sham Link 0, 
  Self Originated 0, Duplicate ID 0, LLS 0, 
  Authentication 0, TTL Check Fail 2,
.

Cisco IOS Release 12.4(6)T

The following is sample output from the showipospftraffic command that displays the detailed traffic information for OSPF packets received and sent on each OSPF interface and OSPF process.

Router# show ip ospf traffic 
OSPF statistics:
.
.
.
    Interface Ethernet0/0.1
OSPF packets received/sent
  Type          Packets              Bytes
  RX Invalid    0                    0
  RX Hello      0                    0
  RX DB des     0                    0
  RX LS req     0                    0
  RX LS upd     0                    0
  RX LS ack     0                    0
  RX Total      0                    0
  TX Failed     0                    0
  TX Hello      16                   1216
  TX DB des     0                    0
  TX LS req     0                    0
  TX LS upd     0                    0
  TX LS ack     0                    0
  TX Total      16                   1216
.
.
.
    Interface Serial2/0
OSPF packets received/sent
  Type          Packets              Bytes
  RX Invalid    0                    0
  RX Hello      11                   528
  RX DB des     4                    148
  RX LS req     1                    60
  RX LS upd     3                    216
  RX LS ack     2                    128
  RX Total      21                   1080
  TX Failed     0                    0
  TX Hello      14                   1104
  TX DB des     3                    252
  TX LS req     1                    56
  TX LS upd     3                    392
  TX LS ack     2                    128
  TX Total      23                   1932
.
.
.
    Interface Ethernet0/0
OSPF packets received/sent
  Type          Packets              Bytes
  RX Invalid    0                    0
  RX Hello      13                   620
  RX DB des     3                    116
  RX LS req     1                    36
  RX LS upd     3                    228
  RX LS ack     4                    216
  RX Total      24                   1216
  TX Failed     0                    0
  TX Hello      17                   1344
  TX DB des     4                    276
  TX LS req     1                    56
  TX LS upd     7                    656
  TX LS ack     2                    128
  TX Total      31                   2460
.
.
.
Summary traffic statistics for process ID 1:
OSPF packets received/sent
  Type          Packets              Bytes
  RX Invalid    0                    0
  RX Hello      24                   1148
  RX DB des     7                    264
  RX LS req     2                    96
  RX LS upd     6                    444
  RX LS ack     6                    344
  RX Total      45                   2296
  TX Failed     0                    0
  TX Hello      31                   2448
  TX DB des     7                    528
  TX LS req     2                    112
  TX LS upd     10                   1048
  TX LS ack     4                    256
  TX Total      54                   4392
OSPF header errors
  Length 0, Checksum 0, Version 0, Bad Source 13, 
  No Virtual Link 0, Area Mismatch 0, No Sham Link 0, 
  Self Originated 0, Duplicate ID 0, Hello 0, 
  MTU Mismatch 0, Nbr Ignored 0, LLS 0, 
  Authentication 0, 
OSPF LSA errors
  Type 0, Length 0, Data 0, Checksum 0, 

To start collecting new statistics, reset the counters and clear the traffic statistics by entering the clearipospftraffic command as follows:

Router# clear ip ospf traffic

Examples

The following is sample output from the showipospfvirtual-links command:

Router# show ip ospf virtual-links
Virtual Link to router 192.168.101.2 is up
Transit area 0.0.0.1, via interface Ethernet0, Cost of using 10
Transmit Delay is 1 sec, State POINT_TO_POINT
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 0:00:08
Adjacency State FULL

The table below describes the significant fields shown in the display.

Examples

show ipv6 ospf Output Example

The following is sample output from the show ipv6 ospf command:

Router# show ipv6 ospf
Routing Process "ospfv3 1" with ID 10.10.10.1
 SPF schedule delay 5 secs, Hold time between two SPFs 10 secs
 Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs
 LSA group pacing timer 240 secs
 Interface flood pacing timer 33 msecs
 Retransmission pacing timer 66 msecs
 Number of external LSA 0. Checksum Sum 0x000000
 Number of areas in this router is 1. 1 normal 0 stub 0 nssa
    Area BACKBONE(0)
        Number of interfaces in this area is 1
        MD5 Authentication, SPI 1000
        SPF algorithm executed 2 times
        Number of LSA 5. Checksum Sum 0x02A005
        Number of DCbitless LSA 0
        Number of indication LSA 0
        Number of DoNotAge LSA 0
        Flood list length 0

The table below describes the significant fields shown in the display.

show ipv6 ospf With Area Encryption Example

The following sample output shows the show ipv6 ospf command with area encryption information:

Router# show ipv6 ospf 
Routing Process "ospfv3 1" with ID 10.0.0.1 
It is an area border router 
SPF schedule delay 5 secs, Hold time between two SPFs 10 secs 
Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs 
LSA group pacing timer 240 secs 
Interface flood pacing timer 33 msecs 
Retransmission pacing timer 66 msecs 
Number of external LSA 0. Checksum Sum 0x000000 
Number of areas in this router is 2. 2 normal 0 stub 0 nssa 
Reference bandwidth unit is 100 mbps 
    Area BACKBONE(0) 
        Number of interfaces in this area is 2 
        SPF algorithm executed 3 times 
        Number of LSA 31. Checksum Sum 0x107493 
        Number of DCbitless LSA 0 
        Number of indication LSA 0 
        Number of DoNotAge LSA 20 
        Flood list length 0 
    Area 1 
        Number of interfaces in this area is 2 
        NULL Encryption SHA-1 Auth, SPI 1001 
        SPF algorithm executed 7 times 
        Number of LSA 20. Checksum Sum 0x095E6A 
        Number of DCbitless LSA 0 
        Number of indication LSA 0 
        Number of DoNotAge LSA 0 
        Flood list length 0 

The table below describes the significant fields shown in the display.

The following example displays the configuration values for SPF and LSA throttling timers:

Router# show ipv6 ospf
 Routing Process "ospfv3 1" with ID 10.9.4.1
 Event-log enabled, Maximum number of events: 1000, Mode: cyclic
 It is an autonomous system boundary router
 Redistributing External Routes from,
    ospf 2
 Initial SPF schedule delay 5000 msecs
 Minimum hold time between two consecutive SPFs 10000 msecs
 Maximum wait time between two consecutive SPFs 10000 msecs
 Minimum LSA interval 5 secs
 Minimum LSA arrival 1000 msecs

The table below describes the significant fields shown in the display.

The following example shows information about LSAs that are currently being rate limited:

Router# show ipv6 ospf rate-limit
List of LSAs that are in rate limit Queue
    LSAID: 0.0.0.0 Type: 0x2001 Adv Rtr: 10.55.55.55 Due in: 00:00:00.500
    LSAID: 0.0.0.0 Type: 0x2009 Adv Rtr: 10.55.55.55 Due in: 00:00:00.500

The table below describes the significant fields shown in the display.

Examples

The following example shows the display output for the showipv6ospftraffic command for OSPFv3:

Router# show ipv6 ospf traffic 
OSPFv3 statistics:
  Rcvd: 32 total, 0 checksum errors
        10 hello, 7 database desc, 2 link state req
        9 link state updates, 4 link state acks
        0 LSA ignored
  Sent: 45 total, 0 failed
        17 hello, 12 database desc, 2 link state req
        8 link state updates, 6 link state acks
        OSPFv3 Router with ID (10.1.1.4) (Process ID 6)
OSPFv3 queues statistic for process ID 6
  Hello queue size 0, no limit, max size 2
  Router queue size 0, limit 200, drops 0, max size 2
Interface statistics:
    Interface Serial2/0
OSPFv3 packets received/sent
  Type          Packets              Bytes
  RX Invalid    0                    0
  RX Hello      5                    196
  RX DB des     4                    172
  RX LS req     1                    52
  RX LS upd     4                    320
  RX LS ack     2                    112
  RX Total      16                   852
  TX Failed     0                    0
  TX Hello      8                    304
  TX DB des     3                    144
  TX LS req     1                    52
  TX LS upd     3                    252
  TX LS ack     3                    148
  TX Total      18                   900
OSPFv3 header errors
  Length 0, Checksum 0, Version 0, No Virtual Link 0, 
  Area Mismatch 0, Self Originated 0, Duplicate ID 0, 
  Instance ID 0, Hello 0, MTU Mismatch 0, 
  Nbr Ignored 0, Authentication 0, 
OSPFv3 LSA errors
  Type 0, Length 0, Data 0, Checksum 0, 
    Interface Ethernet0/0
OSPFv3 packets received/sent
  Type          Packets              Bytes
  RX Invalid    0                    0
  RX Hello      6                    240
  RX DB des     3                    144
  RX LS req     1                    52
  RX LS upd     5                    372
  RX LS ack     2                    152
  RX Total      17                   960
  TX Failed     0                    0
  TX Hello      11                   420
  TX DB des     9                    312
  TX LS req     1                    52
  TX LS upd     5                    376
  TX LS ack     3                    148
  TX Total      29                   1308
OSPFv3 header errors
  Length 0, Checksum 0, Version 0, No Virtual Link 0, 
  Area Mismatch 0, Self Originated 0, Duplicate ID 0, 
  Instance ID 0, Hello 0, MTU Mismatch 0, 
  Nbr Ignored 0, Authentication 0, 
OSPFv3 LSA errors
  Type 0, Length 0, Data 0, Checksum 0, 
Summary traffic statistics for process ID 6:
OSPFv3 packets received/sent
  Type          Packets              Bytes
  RX Invalid    0                    0
  RX Hello      11                   436
  RX DB des     7                    316
  RX LS req     2                    104
  RX LS upd     9                    692
  RX LS ack     4                    264
  RX Total      33                   1812
  TX Failed     0                    0
  TX Hello      19                   724
  TX DB des     12                   456
  TX LS req     2                    104
  TX LS upd     8                    628
  TX LS ack     6                    296
  TX Total      47                   2208
OSPFv3 header errors
  Length 0, Checksum 0, Version 0, No Virtual Link 0, 
  Area Mismatch 0, Self Originated 0, Duplicate ID 0, 
  Instance ID 0, Hello 0, MTU Mismatch 0, 
  Nbr Ignored 0, Authentication 0, 
OSPFv3 LSA errors
  Type 0, Length 0, Data 0, Checksum 0, 

The network administrator wants to start collecting new statistics, resetting the counters and clearing the traffic statistics by entering the clearipv6ospftraffic command as follows:

Router# clear ipv6 ospf traffic

The table below describes the significant fields shown in the display.

Examples

The following example displays OSPFv3 sham-link information for all VRFs:

Router# show ospfv3 vrf * sham-links

OSPFv3 1 address-family ipv6 vrf v1 (router-id 8.0.0.22)

Sham Link OSPFv3_SL1 to address 2001:111::824 is up
   Interface ID 39
   Area 0 source address 2001:111::822
   Run as demand circuit
   DoNotAge LSA allowed.
   Cost of using 1
   Transmit Delay is 1 sec, State POINT_TO_POINT,
   Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
     Adjacency State FULL (Hello suppressed)
     Index 1/2/2, retransmission queue length 0, number of retransmission 0
     First 0x0(0)/0x0(0)/0x0(0) Next 0x0(0)/0x0(0)/0x0(0)
     Last retransmission scan length is 0, maximum is 0
     Last retransmission scan time is 0 msec, maximum is 0 msec

Table 1
show ospfv3 virtual-links Field Descriptions Field Description

Sham Link OSPFv3_SL1 to address 2001:111::824 is up Specifies the
OSPFv3 neighbor, and if the link to that neighbor is up or down.

Interface ID Interface ID and IPv6 address of the router.

Area 0 source address 2001:111::822 The area the sham link is in and the IPv6 source address of the local
endpoint.

Cost of using 1 The cost of reaching the OSPFv3 neighbor through the sham link.

Transmit Delay is 1 sec The transmit delay (in seconds) on the sham link.

State POINT_TO_POINT The state of the OSPFv3 neighbor.

Timer intervals... The various timer intervals configured for the link.

Adjacency State FULL (Hello suppressed)  The neighbor adjacency state.

Examples

The following example shows how to enable a graceful shutdown of the OSPF protocol:

Router(config
)
# router ospf 1
Router(config-router
)
# shutdown

Examples

The following exampleglobally enables SNMP notifications for OSPF:

Router(config)# snmp-server enable traps ospf

Examples

The following example enables the router to send OSPF configuration mismatch errors only for nonvirtual interfaces:

Router(config)# snmp-server enable traps ospf cisco-specific errors config-error

Examples

The following example enables the router to send nonvirtual interface mismatch error notifications to the host at the address myhost.cisco.com using the community string defined as public:

Router(config)# snmp-server enable traps ospf cisco-specific errors config-error
Router(config)# snmp-server host myhost.cisco.com informs version 2c public

Examples

The following example enables the router to send OSPF sham-link error notifications to the host at the address myhost.cisco.com using the community string defined as public:

Router(config)# snmp-server enable traps ospf cisco-specific errors config-error
Router(config)# snmp-server enable traps ospf cisco-specific errors shamlink
Router(config)# snmp-server host myhost.cisco.com informs version 2c public

Examples

The following example enables the router to send OSPF opaque LSA notifications to the host at the address myhost.cisco.com using the community string defined as public whenever new opaque LSAs are created:

Router(config)# snmp-server enable traps ospf cisco-specific lsa lsa-originate
Router(config)# snmp-server host myhost.cisco.com informs version 2c public

Examples

The following example enables the router to send OSPF sham-link retransmission notifications:

Router(config)# snmp-server enable traps ospf cisco-specific retransmit shamlink

Examples

The following example enables the router to send OSPF sham-link transition state change notifications to the host at the address myhost.cisco.com using the community string defined as public:

Router(config)# snmp-server enable traps ospf cisco-specific state-change shamlink
Router(config)# snmp-server host myhost.cisco.com informs version 2c public