Specifications

Implementing OSPF on Cisco IOS XR Software
How to Implement OSPF on Cisco IOS XR Software
RC-255
Cisco IOS XR Routing Configuration Guide
Controlling the Frequency that the Same LSA Is Originated or Accepted for
OSPF
This task explains how to tune the convergence time of OSPF routes in the routing table when many
LSAs need to be flooded in a very short time interval.
SUMMARY STEPS
1. configure
2. router ospf process-name
or
router ospfv3 process-name
3. router-id {router-id}
4. Perform Step 5 or Step 6 or both to control the frequency that the same LSA is originated or
accepted.
5. timers lsa gen-interval seconds
6. timers lsa min-arrival seconds
Step 15
authentication [message-digest | keychain
keychain ] | null]
Example:
RP/0/RP0/CPU0:router(config-ospf-ar-if)#
authentication null
Specifies no authentication on POS interface 0/3/0/0,
overriding the plain text authentication specified for area 1.
• By default, all of the interfaces configured in the same
area inherit the same authentication parameter values of
the area.
Step 16
end
or
commit
Example:
RP/0/RP0/CPU0:router(config-ospf-ar-if)# end
or
RP/0/RP0/CPU0:router(config-ospf-ar-if)# commit
Saves configuration changes.
• When you issue the end command, the system prompts
you to commit changes:
Uncommitted changes found, commit them before
exiting(yes/no/cancel)?
[cancel]:
– Entering yes saves configuration changes to the
running configuration file, exits the configuration
session, and returns the router to EXEC mode.
– Entering no exits the configuration session and
returns the router to EXEC mode without
committing the configuration changes.
– Entering cancel leaves the router in the current
configuration session without exiting or
committing the configuration changes.
• Use the commit command to save the configuration
changes to the running configuration file and remain
within the configuration session.
Command or Action Purpose