Displaying OSPFv2 results

The show ip ospf command and its variations can be used to display information about OSPFv2 configurations.

1. In privileged EXEC mode, enter the show ip ospf command to display general OSPFv2 information.
   

   device# show ip ospf 
   
   show ip ospf
   OSPF Version                  Version 2
   Router Id                     32.32.32.32
   ASBR Status                   No
   ABR Status                    No         (0)
   Redistribute Ext Routes from
   Initial SPF schedule delay    0          (msecs)
   Minimum hold time for SPFs    0          (msecs)
   Maximum hold time for SPFs    0          (msecs)
   External LSA Counter          0
   External LSA Checksum Sum     0
   Originate New LSA Counter     9
   Rx New LSA Counter            5
   External LSA Limit            14913080
   Administrative Distance
     -  External Routes:         110
     -  Intra Area Routes:       110
     -  Inter Area Routes:       110
   Database Overflow Interval    0
   Database Overflow State :     NOT OVERFLOWED
   RFC 1583 Compatibility :      Disabled
   NSSA Translator:              Enabled
   Nonstop Routing:              Disabled
   Graceful Restart              Enabled
   Graceful Restart Helper       Enabled
   Graceful Restart Time         120
   LDP-SYNC: Not globally enabled
   Interfaces with LDP-SYNC enabled:
       None
   

   The example output displays general OSPFv2 information and indicates that the device is not operating as an ASBR. If the device is not operating as an ASBR, there is no information about redistribution in the output.
2. Enter the show ip ospf area command to display information about an OSPFv2 area.
   

   device# show ip ospf area
   
   Number of Areas is 1
   
   Index   Area             Type   Cost       SPFR       ABR   ASBR  LSA     Chksum(Hex)
   1       0                normal 0          482        0     0     1       00006828
   

   The example output displays detailed output for OSPFv2 Area 0.
3. Enter the show ip ospf interface command to display OSPFv2 interface information.
   

   device# show ip ospf interface
   
   Ethernet 1/8 admin up, oper up
        IP Address 10.1.8.32, Area 0
        BFD is disabled
        Database Filter: Not Configured
        State DR, Pri 1, Cost 1, Options ------E-, Type broadcast Events 8
        Timers(sec): Transmit 1, Retrans 5, Hello 10, Dead 40
        DR:  Router ID 32.32.32.32       Interface Address 10.1.8.32
        BDR: Router ID 0.0.0.0           Interface Address 0.0.0.0
        Neighbor Count = 1, Adjacent Neighbor Count= 0
        Neighbor:         10.1.8.19 [id 19.19.19.18]
        Authentication-Key: None
        MD5 Authentication: Key None, Key-Id  None , Auth-change-wait-time 300
   LDP-SYNC: Disabled, State: -
   
   Loopback 1 admin up, oper up
        IP Address 32.32.32.32, Area 0
        BFD is disabled
        Database Filter: Not Configured
        State DR, Pri 1, Cost 1, Options ------E-, Type broadcast Events 2
        Timers(sec): Transmit 1, Retrans 5, Hello 10, Dead 40
        DR:  Router ID 32.32.32.32       Interface Address 32.32.32.32
        BDR: Router ID 0.0.0.0           Interface Address 0.0.0.0
        Neighbor Count = 0, Adjacent Neighbor Count= 0
        Authentication-Key: None
        MD5 Authentication: Key None, Key-Id  None , Auth-change-wait-time 300
   LDP-SYNC: Disabled, State: -                 
   
   

   The example output displays detailed output for OSPFv2 interfaces.
4. Enter the show ip ospf interface command with the brief parameter to display summarized OSPFv2 interface information.
   

   device# show ip ospf interface brief
   Interface       Area            IP Addr/Mask         Cost  State    Nbrs(F/C)
   Eth 6/45        0               10.10.10.1/24        1     down     0/0
   Ve 15           0               15.15.15.1/24        1     DR       0/0
   Ve 161          0               161.161.161.1/24     1     DR       0/0
   Ve 162          0               162.162.162.1/24     1     DR       0/0         
   
   

   The example output displays summarized output for OSPFv2 interfaces.
5. Enter the show ip ospf neighbor command to display OSPFv2 neighbor information for the device.
   

   device# show ip ospf neighbor
   
   Number of Neighbors is 1, in FULL state 0
   
   Port           Address         Pri State      Neigh Address   Neigh ID        Ev      Opt Cnt
   Eth 1/8        10.1.8.32       1   INIT/OTHER 10.1.8.19       19.19.19.18     7       66  0
   

   The example output displays output for an OSPFv2 neighbor.
6. Enter the show ip ospf routes command to display information about OSPFv2 routes.
   

   device# show ip ospf routes
   
   OSPF Regular Routes 7:
   
         Destination         Mask            Path_Cost Type2_Cost Path_Type
         1.1.1.1             255.255.255.255 1         0          Intra
         Adv_Router          Link_State      Dest_Type State      Tag       Flags
         1.1.1.1             1.1.1.1         Network   Valid      0          6
         Paths Out_Port      Next_Hop        Type      State
         1     Lo 1          0.0.0.0         OSPF      0  0
   
         Destination         Mask            Path_Cost Type2_Cost Path_Type
         1.1.1.2             255.255.255.255 1         0          Intra
         Adv_Router          Link_State      Dest_Type State      Tag       Flags
         1.1.1.1             1.1.1.1         Network   Valid      0          6
         Paths Out_Port      Next_Hop        Type      State
         1     Lo 2          0.0.0.0         OSPF      0  0
   
         Destination         Mask            Path_Cost Type2_Cost Path_Type
         1.1.1.3             255.255.255.255 1         0          Intra
         Adv_Router          Link_State      Dest_Type State      Tag       Flags
         1.1.1.1             1.1.1.1         Network   Valid      0          6
         Paths Out_Port      Next_Hop        Type      State
         1     Lo 3          0.0.0.0         OSPF      0  0
   
         Destination         Mask            Path_Cost Type2_Cost Path_Type
         1.1.1.4             255.255.255.255 1         0          Intra
         Adv_Router          Link_State      Dest_Type State      Tag       Flags
         1.1.1.1             1.1.1.1         Network   Valid      0          6
         Paths Out_Port      Next_Hop        Type      State
         1     Lo 4          0.0.0.0         OSPF      0  0
   
         Destination         Mask            Path_Cost Type2_Cost Path_Type
         1.1.1.5             255.255.255.255 1         0          Intra
         Adv_Router          Link_State      Dest_Type State      Tag       Flags
         1.1.1.1             1.1.1.1         Network   Valid      0          6
         Paths Out_Port      Next_Hop        Type      State
         1     Lo 5          0.0.0.0         OSPF      0  0
   
         Destination         Mask            Path_Cost Type2_Cost Path_Type
         1.1.1.6             255.255.255.255 1         0          Intra
         Adv_Router          Link_State      Dest_Type State      Tag       Flags
         1.1.1.1             1.1.1.1         Network   Valid      0          6
         Paths Out_Port      Next_Hop        Type      State
         1     Lo 6          0.0.0.0         OSPF      0  0
   
         Destination         Mask            Path_Cost Type2_Cost Path_Type
         1.1.1.7             255.255.255.255 1         0          Intra
         Adv_Router          Link_State      Dest_Type State      Tag       Flags
         1.1.1.1             1.1.1.1         Network   Valid      0          6
         Paths Out_Port      Next_Hop        Type      State
         1     Lo 7          0.0.0.0         OSPF      0  0
   

7. Enter the show ip ospf summary command to display summary output for OSPFv2 sessions.
   

   device# show ip ospf summary
   
   Seq Instance        Intfs   Nbrs    Nbrs-Full LSAs    Routes
   1   default-vrf     2       1       0         1       2
   
     

8. Enter the show ip ospf summary all-vrfs total command to display cumulative summary output for OSPFv2 sessions.
   

   device# show ip ospf summary all-vrfs total
   --------------------------------------------- 
           IPv4 OSPF VRFs Summary Total 
   --------------------------------------------- 
   Number of VRFs: 1 
   Number of Interfaces: 200 
   Number of Neighbors: 200 
   Number of Neighbors in Full state: 200 
   Number of LSAs: 182600 
   Number of Routes: 102600 
    

9. Enter the show ip ospf traffic command to display OSPF traffic details.
   

   device# show ip ospf traffic
   
                   Packets Received         Packets Sent
   Hello                       3943                 3936
   Database                       6                    6
   LSA Req                        1                    2
   LSA Upd                       18                   20
   LSA Ack                       17                   16
   No Packet Errors!