C
HAPTER
45
| IP Routing Commands
Open Shortest Path First (OSPFv2)
– 1074 –
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#
The following shows output when using the external keyword.
Console#show ip ospf database external
OSPF Router process 100 with ID (10.10.11.50)
AS External Link States LS age: 298
Options: 0x2 (*|-|-|-|-|-|E|-)
LS Type: AS-external-LSA
Link State ID: 10.10.100.0 (External Network Number)
Advertising Router: 10.10.11.50
LS Seq Number: 80000001
Checksum: 0x7033
Length: 36
Network Mask: /24
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 20
Forward Address: 10.10.11.50
External Route Tag: 0
Table 145: show ip ospf database summary - display description
Field Description
OSPF Router ID Router ID
LS age Age of LSA (in seconds)
Options Optional capabilities associated with the LSA
LS Type Summary Links - LSA describes routes to AS boundary routers
Link State ID Interface address of the autonomous system boundary router
Advertising
Router
Advertising router ID
LS Sequence
Number
Sequence number of LSA (used to detect older duplicate LSAs)
Checksum Checksum of the complete contents of the LSA
Length The length of the LSA in bytes
Network Mask Address mask for the network
TOS Type of Service – This router only supports TOS 0 (or normal service)
Metric Cost of the link
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