Chapter 50
| IP Routing Commands
Open Shortest Path First (OSPFv2)
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Net Link States (Area 0.0.0.0)
Link ID ADV Router Age Seq# CkSum
192.168.0.2 192.168.0.2 225 0x80000001 0x9c0f
AS External Link States
Link ID ADV Router Age Seq# CkSum Route Tag
0.0.0.0 192.168.0.2 487 0x80000001 0xd491 E2 0.0.0.0/0 0
0.0.0.0 192.168.0.3 222 0x80000001 0xce96 E2 0.0.0.0/0 0
Console#
The following shows output when using the asbr-summary keyword.
Console#show ip ospf database asbr-summary
OSPF Router with ID (0.0.0.0) (Process ID 1)
ASBR-Summary Link States (Area 0.0.0.1)
LS Age: 0
Options: 0x2 (*|-|-|-|-|-|E|-)
LS Type: ASBR-summary-LSA
Link State ID: 2.1.0.0 (AS Boundary Router address)
Advertising Router: 192.168.2.1
LS Seq Number: 80000001
Checksum: 0x7b67
Length: 28
Network Mask: /0
TOS: 0 Metric: 10
Console#
Table 7: show ip ospf database - display description
Field Description
OSPF Router
Process with ID
OSPF process ID and router ID. The router ID uniquely identifies the router in the
autonomous system. By convention, this is normally set to one of the router's IP
interface addresses.
Link ID Either a Router ID or an IP Address; it identifies the piece of the routing domain
that is being described by the advertisement
ADV Router Advertising router ID
Age Age of LSA (in seconds)
Seq# Sequence number of LSA (used to detect older duplicate LSAs)
CkSum Checksum of the complete contents of the LSA
Link count Number of interfaces attached to the router
Route Type 1 or Type 2 external metric (see the redistribute command) and route
Tag Optional tag if defined (see the redistribute command)
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