Viewing OSPF external link-state information

Syntax:

show ip ospf external-link-state

When you enter this command, an output similar to the following is displayed:

The table below shows the information the OSPF external link state displays:

CLI display of OSPF external link state information

Field

Content

Link State ID

LSA ID for this LSA. Normally, the destination of the external route, but may have some "host" bits set.

Router ID

Router ID of the router that originated this external LSA.

Age

Current age (in seconds) of this LSA.

Sequence #

Sequence number of the current instance of this LSA.

Chksum(Hex)

LSA checksum value.

Syntax:

show ip ospf external-link-state [status][subset-options]

router-id ip-addr

Subset option to filter displayed external-link-state data to show LSAs with the specified router ID only. Can also be filtered by using the link-state-id or sequence-number options.

sequence-number integer

Subset option to filter displayed external-link-state data to show LSAs with the specified sequence number. Can also be filtered by using the link-state-id or router-id options.

link-state-id ip-addr

Subset option to filter displayed external-link-state data to show LSAs with the specified ID only. Can also be filtered by using the sequence-number or router-id options.

Syntax:

show ip ospf external-link-state [status]advertise

Displays the hexadecimal data in the specified LSA packet, the actual contents of the LSAs. Can also be filtered by using the link-state-id, router-id, or sequence-number options.