The following are restrictions when configuring nonstop forwarding:Note
•
OSPF Cisco NSF for virtual links is not supported.
•
Neighbors must be NSF aware.
SUMMARY STEPS
1.
configure
2.
router ospf process-name
3.
router-id { router-id }
4.
Do one of the following:
•
nsf cisco
•
nsf cisco enforce global
5.
nsf interval seconds
6.
nsfflush-delay-timeseconds
7.
nsflifetimeseconds
8.
nsfietf
9.
commit
DETAILED STEPS
PurposeCommand or Action
configure
Step 1
Enables OSPF routing for the specified routing process and places
the router in router configuration mode.
router ospf process-name
Example:
RP/0/RSP0/CPU0:router(config)# router
ospf 1
Step 2
The process-name argument is any alphanumeric string
no longer than 40 characters.
Note
Configures a router ID for the OSPF process.
router-id { router-id }
Step 3
Example:
RP/0/RSP0/CPU0:router(config-ospf)#
router-id 192.168.4.3
We recommend using a stable IPv4 address as the router
ID.
Note
Enables Cisco NSF operations for the OSPF process.Do one of the following:
Step 4
•
nsf cisco
•
Use the nsf cisco command without the optional enforce and
global keywords to abort the NSF restart mechanism on the
•
nsf cisco enforce global
interfaces of detected non-NSF neighbors and allow NSF
neighbors to function properly.
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
459
Implementing OSPF
Configuring Nonstop Forwarding Specific to Cisco for OSPF Version 2
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