Reference Guide

Field Description
TOS Displays the Type of Service (TOS) options. Option 0 is the only
option.
Metric Displays the LSA metric.
Forward Address Identifies the address of the forwarding router. Data traffic is
forwarded to this router. If the forwarding address is 0.0.0.0, data
traffic is forwarded to the originating router.
External Route Tag Displays the 32-bit field attached to each external route. This field is
not used by the OSPF protocol, but can be used for external route
management.
Example
FTOS#show ip ospf 1 database external
OSPF Router with ID (20.20.20.5) (Process ID 1)
Type-5 AS External
LS age: 612
Options: (No TOS-capability, No DC, E)
LS type: Type-5 AS External
Link State ID: 12.12.12.2
Advertising Router: 20.31.3.1
LS Seq Number: 0x80000007
Checksum: 0x4cde
Length: 36
Network Mask: /32
Metrics Type: 2
TOS: 0
Metrics: 25
Forward Address: 0.0.0.0
External Route Tag: 43
LS age: 1868
Options: (No TOS-capability, DC)
LS type: Type-5 AS External
Link State ID: 24.216.12.0
Advertising Router: 20.20.20.8
LS Seq Number: 0x80000005
Checksum: 0xa00e
Length: 36
Network Mask: /24
Metrics Type: 2
TOS: 0
Metrics: 1
Forward Address: 0.0.0.0
External Route Tag: 701
FTOS#
Related
Commands
show ip ospf database – displays OSPF database information.
1200