Glossary

Field Description
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.
graceful-restart grace-period
Enable OSPFv3 graceful restart globally by setting the grace period (in seconds) that an OSPFv3 router’s neighbors continues
to advertise the router as adjacent during a graceful restart.
Syntax
graceful-restart grace-period seconds
To disable OSPFv3 graceful restart, enter no graceful-restart grace-period.
Parameters
seconds Time duration, in seconds, that specifies the duration of the restart process before
OSPFv3 terminates the process. The range is from 40 to 1800 seconds.
Defaults OSPFv3 graceful restart is disabled and functions in a helper-only role.
Command Modes ROUTER OSPFv3
Open Shortest Path First (OSPFv2 and OSPFv3) 1151