Reference Guide

• 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’s type.
Link State ID Displays the Link State ID.
Advertising
Router
Identifies the router ID of the LSA’s originating router.
Checksum Identifies the link state sequence number. This number
enables you to identify old or duplicate LSAs.
Length Displays the Fletcher checksum of an LSA’s complete
contents.
Network Mask Displays the length in bytes of the LSA.
Attached
Router
Identifies the IP address of routers attached to the network.
Example
Dell#show ip ospf 1 data network
OSPF Router with ID (20.20.20.5) (Process ID 1)
Network (Area 0.0.0.0)
LS age: 1372
Options: (No TOS-capability, DC, E)
LS type: Network
Link State ID: 202.10.10.2
Advertising Router: 20.20.20.8
LS Seq Number: 0x80000006
Checksum: 0xa35
Length: 36
Network Mask: /24
Attached Router: 20.20.20.8
Attached Router: 20.20.20.9
Attached Router: 20.20.20.7
Network (Area 0.0.0.1)
LS age: 252
Options: (TOS-capability, No DC, E)
LS type: Network
Link State ID: 192.10.10.2
Advertising Router: 192.10.10.2
LS Seq Number: 0x80000007
Checksum: 0x4309
Length: 36
Network Mask: /24
Attached Router: 192.10.10.2
Attached Router: 20.20.20.1
Attached Router: 20.20.20.5
Dell#
1012
Open Shortest Path First (OSPFv2)