show ip ospf interface
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- Last UpdatedAug 13, 2021
- 7 minutes read
show ip ospf interface
Displays information about all or specific Open Shortest Path First (OSPF)-enabled interfaces.
ip-address
| Specifies interface IP address in dotted decimal format.
|
brief
| Displays brief summary information about the specified interface.
|
ethernet
unit/slot/port
| Specifies an Ethernet interface with the interface ID in unit/slot/port ID format.
|
lag
lag-id
| Specifies the Link Aggregation Group (LAG) virtual interface.
|
loopback
number
| Specifies a loopback port number, which ranges from 1 through 255..
|
tunnel
number
| Specifies a tunnel interface.
|
ve
vlan-id
| Specifies the virtual Ethernet (VE) VLAN number.
|
User EXEC mode
Use the brief keyword to limit the display to the following fields:
- Interface
- Area
- IP address/Mask
- Cost
- State
- Nbrs(F/C)
If enable password-display is configured on the device, the MD5 password is displayed in clear text in the output for this command. To prevent the MD5 password from being displayed in clear text, the enable password-display command should be used with the md5-fmt parameter. Refer to the enable password-display command for more information.
The show ip ospf interface command displays the following information:
|
Output field |
Description |
|---|---|
|
Interface |
The type of interface type and the port number or number of the interface. |
|
IP Address |
The IP address of the interface. |
|
Area |
The OSPF area configured on the interface |
|
Database Filter |
The router’s configuration for blocking outbound LSAs on an OSPF interface. If Not Configured is displayed, there is no outbound LSA filter configured. This is the default condition. |
|
State |
The state of the interface. Possible states include the following:
|
|
default |
Shows whether or not the default passive state is set. |
|
Pri |
The interface priority. |
|
Cost |
The configured output cost for the interface. |
|
Interface bandwidth |
The configured bandwidth on a tunnel interface for routing metric purposes only. |
|
Options |
OSPF Options (Bit7 - Bit0):
|
|
Type |
The area type:
|
|
Events |
OSPF interface event:
|
|
Timer intervals |
The interval, in seconds, of the transmit-interval, retransmit-interval, hello-interval, and dead-interval timers. |
|
Packets Received |
Number of packets received from the server. |
|
Packets Sent |
Number of packets sent to the server. |
|
Hello |
Number of Hello packets. |
|
Database |
OSPF database. |
|
LSA Req |
|
|
LSA Upd |
LSA update |
|
LSA Ack |
LSA acknowledgment. |
|
Packet Errors |
OSPF packet areas |
|
Area mismatch |
|
|
DR |
The router ID (IPv4 address) of the Designated Router (DR). |
|
BDR |
The router ID (IPv4 address) of the Backup Designated Router (BDR). |
|
Neighbor Count |
The number of neighbors to which the interface is connected. |
|
Adjacent Neighbor Count |
The number of adjacent neighbor routers. |
|
Neighbor |
The IP address of the neighbor. |
This example shows sample output from the show ip ospf interface command when the brief keyword is used.
device# # show ip ospf interface brief
Number of Interfaces is 1
Interface Area IP Addr/Mask Cost State Nbrs(F/C)
eth 1/1/2 0 16.1.1.2/24 1 down 0/0The following example displays information about a specified OSPF-enabled virtual Ethernet (VE) interface.
device# show ip ospf interface ve 20
ve 20 admin up, oper up, ospf enabled, state up
IP Address 21.21.21.22, Area 0
Database Filter: Not Configured
State BDR, Pri 1, Cost 1, Options 2, Type broadcast Events 31
Timers(sec): Transmit 1, Retrans 5, Hello 10, Dead 40
DR: Router ID 3.3.3.3 Interface Address 21.21.21.21
BDR: Router ID 2.2.2.2 Interface Address 21.21.21.22
Packets Received Packets Sent
Hello 86374 86735
Database 2 4
LSA Req 1 0
LSA Upd 451 907
LSA Ack 906 451
No Packet Errors!
Neighbor Count = 1, Adjacent Neighbor Count= 1
Neighbor: 21.21.21.21 [id 3.3.3.3] (DR)
Authentication-Key: None
MD5 Authentication: Key None, Key-Id None, Auth-change-wait-time 300
The following example displays information about a specified OSPF-enabled Ethernet interface, including the cost, where the cost is calculated using the default interface speed and auto cost.
device# show ip ospf interface ethernet 3/1/1
e 3/1/1 admin up, oper up, ospf enabled, state up
IP Address 89.0.0.2, Area 0
Database Filter: Not Configured
State BDR, Pri 1, Cost 1, Options 2, Type broadcast Events 3
The following example displays information about a specified OSPF-enabled Ethernet interface, including the cost, which has been calculated using the configured interface bandwidth and the default auto-cost.
device# show ip ospf interface ethernet 1/1/3
e 1/1/3 admin up, oper up, ospf enabled, state up
IP Address 172.201.3.2, Area 0
Database Filter: Not Configured
State DR, Pri 1, Cost 34, Options 2, Type broadcast Events 5
Timers(sec): Transmit 1, Retrans 5, Hello 10, Dead 40
DR: Router ID 192.168.3.1 Interface Address 172.201.3.2
BDR: Router ID 192.168.1.1 Interface Address 172.201.3.1
Packets Received Packets Sent
Hello 73 79
Database 3 2
LSA Req 0 1
LSA Upd 4 5
LSA Ack 5 3
No Packet Errors!
Neighbor Count = 1, Adjacent Neighbor Count= 1
Neighbor: 172.201.3.1 [id 192.168.1.1] (BDR)
Authentication-Key: None
MD5 Authentication: Key None, Key-Id None, Auth-change-wait-time 300
The following example displays information about a specified OSPF-enabled VE interface including OSPF BFD sessions for neighbors.
device# show ip ospf interface ve 10
ve 10 admin up, oper up, ospf enabled, state up
IP Address 12.12.12.3, Area 0
BFD is enabled
Database Filter: Not Configured
State DR, Pri 1, Cost 1, Options ------E-, Type broadcast Events 55183
Timers(sec): Transmit 1, Retrans 5, Hello 10, Dead 40
DR: Router ID 0.0.0.2 Interface Address 12.12.12.3
BDR: Router ID 0.0.0.1 Interface Address 12.12.12.6
Packets Received Packets Sent
Hello 10029 10045
Database 3 3
LSA Req 1 1
LSA Upd 56 60
LSA Ack 59 55
Packet Errors: None
Neighbor Count = 1, Adjacent Neighbor Count= 1
Neighbor: 12.12.12.6 [id 0.0.0.1] (BDR)
Authentication-Key: None
MD5 Authentication: Key None, Key-Id None, Auth-change-wait-time 300
The following example displays information about a specified OSPF-enabled VE interface including information for port traffic statistics.
device> show ip ospf interface ve 42
ve 42 admin up, oper up, ospf enabled, state up
IP Address 42.1.1.1, Area 1.1.1.1
Database Filter: Not Configured
State BDR, Pri 1, Cost 1, Options 2, Type broadcast Events 2
Timers(sec): Transmit 1, Retrans 5, Hello 10, Dead 40
DR: Router ID 135.1.1.1 Interface Address 42.1.1.35
BDR: Router ID 102.1.1.1 Interface Address 42.1.1.1
Packets Received Packets Sent
Hello 11 11
Database 0 0
LSA Req 0 0
LSA Upd 0 0
LSA Ack 0 0
Packet Errors:
Area mismatch 22,
Neighbor Count = 1, Adjacent Neighbor Count= 1
Neighbor: 42.1.1.35 [id 135.1.1.1] (DR)
In-Use Authentication: None, Key: None, Key-Id: None
The following example shows a portion of sample output from the show ip ospf intervace command when the enable password-display feature is not configured. The MD5 password is not displayed.
device> show ip ospf interface ve 747
ve 747 admin up, oper up, ospf enabled, state up
IP Address 7.4.7.1, Area 0
Database Filter: Not Configured
State BDR, Pri 1, Cost 1, Options 2, Type broadcast Events 2
Timers(sec): Transmit 1, Retrans 5, Hello 10, Dead 40
DR: Router ID 6.6.6.2 Interface Address 7.4.7.2
BDR: Router ID 10.254.10.254 Interface Address 7.4.7.1
Packets Received Packets Sent
Hello 202 199
Database 3 2
LSA Req 0 1
LSA Upd 4 3
LSA Ack 3 3
No Packet Errors!
Neighbor Count = 1, Adjacent Neighbor Count= 1
Neighbor: 7.4.7.2 [id 6.6.6.2] (DR)
In-Use Authentication: md5, Key: ********, Key-Id: 1
The following example shows a portion of sample output from the show ip ospf interface command when the enable password-display feature is configured. The MD5 password is displayed in clear text.
show ip ospf interface ve 747
ve 747 admin up, oper up, ospf enabled, state up
IP Address 7.4.7.1, Area 0
Database Filter: Not Configured
State BDR, Pri 1, Cost 1, Options 2, Type broadcast Events 2
Timers(sec): Transmit 1, Retrans 5, Hello 10, Dead 40
DR: Router ID 6.6.6.2 Interface Address 7.4.7.2
BDR: Router ID 10.254.10.254 Interface Address 7.4.7.1
Packets Received Packets Sent
Hello 203 200
Database 3 2
LSA Req 0 1
LSA Upd 4 3
LSA Ack 3 3
No Packet Errors!
Neighbor Count = 1, Adjacent Neighbor Count= 1
Neighbor: 7.4.7.2 [id 6.6.6.2] (DR)
In-Use Authentication: md5, Key: minerdi, Key-Id: 1
The following example shows a portion of sample output from the show ip ospf interface command when the enable password-display command is used with the md5-fmt parameter. The password is displayed in MD5 format.
show ip ospf interface ve 747
ve 747 admin up, oper up, ospf enabled, state up
IP Address 7.4.7.1, Area 0
Database Filter: Not Configured
State BDR, Pri 1, Cost 1, Options 2, Type broadcast Events 2
Timers(sec): Transmit 1, Retrans 5, Hello 10, Dead 40
DR: Router ID 6.6.6.2 Interface Address 7.4.7.2
BDR: Router ID 10.254.10.254 Interface Address 7.4.7.1
Packets Received Packets Sent
Hello 205 201
Database 3 2
LSA Req 0 1
LSA Upd 4 3
LSA Ack 3 3
No Packet Errors!
Neighbor Count = 1, Adjacent Neighbor Count= 1
Neighbor: 7.4.7.2 [id 6.6.6.2] (DR)
In-Use Authentication: md5, Key: $Nj1nblVAPQ==, Key-Id: 1
| Release version | Command history |
|---|---|
| 08.0.30 | This command was modified to include configured bandwidth status. |
| 08.0.92 | The packet error section of the output for this command was modified to include more error counters for port traffic statistics. |
| 08.0.92a | The output for this command was modified so that the MD5 password is not displayed in clear text when enable password-display is configured. |