Reference Guide

Default Not congured
Command Mode EXEC
Usage Information
• LS Age—Displays the LS age.
• Options—Displays the optional capabilities available on the router.
• 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. Option 0 is the only option.
• Metric—Displays the LSA metric.
Example
OS10# show ip ospf database summary
OSPF Router with ID (2.2.2.2) (Process ID 100)
Summary Network (Area 0.0.0.0)
LS age: 138
Options: (No TOS-Capability, No DC, E)
LS type: Summary Network
Link State ID: 10.10.10.0
Advertising Router: 1.1.1.1
LS Seq Number: 0x80000001
Checksum: 0xED4C
Length: 28
Network Mask: /24
TOS: 0 Metric: 1
LS age: 143
Options: (No TOS-Capability, No DC, E)
LS type: Summary Network
Link State ID: 10.10.10.0
Advertising Router: 2.2.2.2
LS Seq Number: 0x80000001
Checksum: 0xCF66
Length: 28
Network Mask: /24
TOS: 0 Metric: 1
Summary Network (Area 0.0.0.1)
LS age: 139
Options: (No TOS-Capability, No DC, E)
LS type: Summary Network
Link State ID: 11.11.11.0
Advertising Router: 1.1.1.1
LS Seq Number: 0x80000001
Checksum: 0xC96D
Length: 28
Network Mask: /24
TOS: 0 Metric: 1
LS age: 143
Options: (No TOS-Capability, No DC, E)
LS type: Summary Network
Link State ID: 11.11.11.0
Advertising Router: 2.2.2.2
LS Seq Number: 0x80000001
Layer 3
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