Deployment Guide

Item Description
LS Seq Number Displays the link state sequence number. This number allows you to identify old or
duplicate LSAs.
Checksum Displays the Fletcher checksum of an LSA’s complete contents.
Length Displays the length in bytes of the LSA.
Network Mask Displays the network mask implemented on the area.
TOS Displays the TOS options. Option 0 is the only option.
Metric Displays the LSA metrics.
Example
DellEMC# show ip ospf 100 database summary
OSPF Router with ID (1.1.1.10) (Process ID 100)
Summary Network (Area 0.0.0.0)
LS age: 1551
Options: (No TOS-capability, DC, E)
LS type: Summary Network
Link State ID: 192.68.16.0
Advertising Router: 192.168.17.1
LS Seq Number: 0x80000054
Checksum: 0xb5a2
Length: 28
Network Mask: /24
TOS: 0 Metric: 1
LS age: 9
Options: (No TOS-capability, No DC, E)
LS type: Summary Network
Link State ID: 192.68.32.0
Advertising Router: 1.1.1.10
LS Seq Number: 0x80000016
Checksum: 0x987c
Length: 28
Network Mask: /24
TOS: 0 Metric: 1
LS age: 7
Options: (No TOS-capability, No DC, E)
LS type: Summary Network
Link State ID: 192.68.33.0
Advertising Router: 1.1.1.10
LS Seq Number: 0x80000016
Checksum: 0x1241
Length: 28
Network Mask: /26
TOS: 0 Metric: 1
DellEMC#
Related
Commands
● show ip ospf database — display OSPF database information.
show ip ospf interface
Display the OSPF interfaces configured. If OSPF is not enabled on the switch, no output is generated.
Syntax
show ip ospf [process-id | vrf vrf-name] interface [interface]
1086 Open Shortest Path First (OSPFv2 and OSPFv3)