Reference Guide

Default Not congured
Command Mode EXEC
Usage Information
• Link ID — Displays the router ID
• ADV Router — Displays the advertising router’s ID
• Age — Displays the Link State age
• Seq# — Displays the Link State sequence number (identies old or duplicate LSAs)
• Checksum — Displays the Fletcher checksum of an LSA’s complete contents to check the integrity of the
data
• Link count — Displays the number of interfaces for that router
Example
OS10# show ip ospf database router
OSPF Router with ID (1.1.1.1) (Process ID 100)
Router (Area 0.0.0.1)
LS age: 123
Options: (No TOS-Capability, No DC, E)
LS type: Router
Link State ID: 1.1.1.1
Advertising Router: 1.1.1.1
LS Seq Number: 0x80000002
Checksum: 0xF11A
Length: 36
Number of Links: 1
Link connected to: a Transit Network
(Link ID) Designated Router address: 10.10.10.1
(Link Data) Router Interface address: 10.10.10.1
Number of TOS metric: 0
TOS 0 Metric: 1
LS age: 124
Options: (No TOS-Capability, No DC, E)
LS type: Router
Link State ID: 2.2.2.2
Advertising Router: 2.2.2.2
LS Seq Number: 0x80000002
Checksum: 0xB34F
Length: 36
Number of Links: 1
Link connected to: a Transit Network
(Link ID) Designated Router address: 10.10.10.1
(Link Data) Router Interface address: 10.10.10.2
Number of TOS metric: 0
TOS 0 Metric: 1
Supported Releases
10.2.0E or later
show ip ospf database summary
Displays the network summary (Type 3) LSA routing information.
Syntax
show ip ospf [process-id] database summary
Parameters process-id—(Optional) Displays LSA information for a specic OSPF process ID. If you do not enter a process
ID, this command applies only to the rst OSPF process.
296 Layer 3