Reference Guide

Item Description
Options Displays the optional capabilities available on router. The following
options can be found in this item:
• TOS-capability or No TOS-capability is displayed depending
on whether the router can support Type of Service.
• DC or No DC is displayed depending on whether the
originating router can support OSPF over demand circuits.
• E or No E is displayed on whether the originating router can
accept AS External LSAs.
LS Type Displays the LSA type.
Link State ID Displays the Link State ID.
Advertising Router Identifies the router ID of the LSA’s originating router.
LS Seq Number Displays the link state sequence number. This number detects
duplicate or old LSAs.
Checksum Displays the Fletcher checksum of an LSA’s complete contents.
Length Displays the length in bytes of the LSA.
Number of Links Displays the number of active links to the type of router (Area Border
Router or AS Boundary Router) listed in the previous line.
Link connected to: Identifies the type of network to which the router is connected.
(Link ID) Identifies the link type and address.
(Link Data) Identifies the router interface address.
Number of TOS
Metric
Lists the number of TOS metrics.
TOS 0 Metric Lists the number of TOS 0 metrics.
Example
FTOS#show ip ospf 100 database router
OSPF Router with ID (1.1.1.10) (Process ID 100)
Router (Area 0)
LS age: 967
Options: (No TOS-capability, No DC, E)
LS type: Router
Link State ID: 1.1.1.10
Advertising Router: 1.1.1.10
LS Seq Number: 0x8000012f
Checksum: 0x3357
Length: 144
AS Boundary Router
Area Border Router
Number of Links: 10
Link connected to: a Transit Network
(Link ID) Designated Router address: 192.68.129.1
(Link Data) Router Interface address: 192.68.129.1
Number of TOS metric: 0
1005