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Enabling High Availability Features
Command
Step 3
Router(config-router)# nsf [cisco | ietf] Enables NSF operation for IS-IS.
Step 4
Router(config-router)# nsf interval
[minutes]
Step 5
Router(config-router)# nsf t3 {manual
[seconds] | adjacency}
Step 6
Router(config-router)# nsf interface
wait seconds
Verifying CEF NSF
To verify that CEF is NSF-capable, use the show cef state command:
Router# show cef state
CEF Status [RP]
CEF enabled/running
dCEF enabled/running
CEF switching enabled/running
CEF default capabilities:
Always FIB switching: no
Default CEF switching: yes
Default dCEF switching: no
Update HWIDB counters: no
Drop multicast packets: no
Output dCAR supported: no
OK to punt packets: yes
NVGEN CEF state: no
fastsend() used: no
ACL logging at irq: no
Per-packet loadbalancing: no
Allow CEF re-enable: no
MAC accounting on RP: no
Background ADJ updater: no
Force loadinfo structures: no
CEF NSF capable: yes
IPC delayed func on SSO: no
FIB auto repair supported: yes
HW forwarding on this platform: no
HW forwarding in this CEF instance:no
LCs not running at init time:no
IP CEF accounting supported:yes
RP state:
Route Switch Processor (RSP8) Installation and Configuration Guide
54
Purpose
Use the ietf keyword to enable IS-IS in homogeneous
network where adjacencies with networking devices
supporting IETF draft-based restartability is guaranteed.
Use the cisco keyword to run IS-IS in heterogeneous
networks that might not have adjacencies with NSF-aware
networking devices.
(Optional) Specifies the minimum time between NSF restart
attempts. The default time between consecutive NSF restart
attempts is 5 minutes.
(Optional) Specifies the time IS-IS will wait for the IS-IS
database to synchronize before generating overloaded
link-state information for itself and flooding that information
out to its neighbors.
The t3 keyword applies only if you selected ietf operation.
Specifying adjacency means that the restarting router
obtains its wait time from neighboring devices.
(Optional) Specifies how long an IS-IS NSF restart will wait
for all interfaces with IS-IS adjacencies to come up before
completing the restart. The default is 10 seconds.
OL-4920-02
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