C
HAPTER
45
| IP Routing Commands
Open Shortest Path First (OSPFv2)
– 1075 –
OSPF Router with ID (0.0.0.0) (Process ID 1)
AS External Link States
LS age: 0
Options: 0x2 (*|-|-|-|-|-|E|-)
LS Type: AS-external-LSA
Link State ID: 0.0.0.0 (External Network Number)
Advertising Router: 192.168.0.2
LS Seq Number: 80000005
Checksum: 0xcc95
Length: 36
Network Mask: /0
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 1
Forward Address: 0.0.0.0
External Route Tag: 0
Console#
Table 146: show ip ospf database external - 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 AS External Links - LSA describes routes to destinations outside the AS
(including default external routes for the AS)
Link State ID IP network number (External Network Number)
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
Me tr ic Ty pe Ty pe 1 or Ty pe 2 extern al me tr ic ( see t he redistribute command)
TOS Type of Service – This router only supports TOS 0 (or normal service)
Metric Cost of the link
Forward
Address
Next hop addres. If this field is set to 0.0.0.0, data is forwarded to the
originator of the advertisement.
External Route
Ta g
Optional tag if defined (see the redistribute command)
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