Reference Guide

• Seq# — Identies the link state sequence number (identies old or duplicate LSAs).
• Checksum — Displays the Fletcher checksum of an LSA’s complete contents.
• Link count — Displays the number of interfaces for that router.
Example
OS10# show ip ospf 10 database
OSPF Router with ID (111.2.1.1) (Process ID 10)
Router (Area 0.0.0.0)
Link ID ADV Router Age Seq# Checksum Link count
111.2.1.1 111.2.1.1 1281 0x8000000d 0x9bf2 3
111.111.111.1 111.111.111.1 1430 0x8000021a 0x515a 1
111.111.111.2 111.111.111.2 1430 0x8000021a 0x5552 1
112.2.1.1 112.2.1.1 1282 0x8000000b 0x0485 3
112.112.112.1 112.112.112.1 1305 0x80000250 0xbab2 1
112.112.112.2 112.112.112.2 1305 0x80000250 0xbeaa 1
Network (Area 0.0.0.0)
Link ID ADV Router Age Seq# Checksum
110.1.1.2 112.2.1.1 1287 0x80000008 0xd2b1
111.1.1.1 111.2.1.1 1458 0x80000008 0x1b8f
111.2.1.1 111.2.1.1 1458 0x80000008 0x198f
112.1.1.1 112.2.1.1 1372 0x80000008 0x287c
112.2.1.1 112.2.1.1 1372 0x80000008 0x267c
Summary Network (Area 0.0.0.0)
Supported Releases 10.2.0E or later
show ip ospf database asbr-summary
Displays information about AS boundary LSAs.
Syntax
show ip ospf [process-id] database asbr-summary
Parameters process-id—(Optional) Displays the AS boundary LSA information for a specied OSPF process ID. If you do
not enter a process ID, this applies only to the rst OSPF process.
Default Not congured
Command Mode EXEC
Usage Information
• LS Age—Displays the LS age.
• Options—Displays optional capabilities.
• LS Type—Displays the Link State type.
• Link State ID—Identies the router ID.
• Advertising Router—Identies the advertising router’s ID.
• LS Seq Number—Identies the LS sequence number (identies old or duplicate LSAs).
• Checksum—Displays the Fletcher checksum of an LSA’s complete contents.
• Length—Displays the LSA length in bytes.
• Network Mask—Identies the network mask implemented on the area.
• TOS—Displays the ToS options. The only option available is zero..
• Metric—Displays the LSA metric.
Example
OS10# show ip ospf 10 database asbr-summary
OSPF Router with ID (1.1.1.1) (Process ID 100)
366 Layer 3