Administrator Guide

Field Description
LS Age Displays the LSA’s age.
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’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
DellEMC# 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
DellEMC#
Related
Commands
• show ip ospf database — display OSPF database information.
Open Shortest Path First (OSPFv2 and OSPFv3) 1053