Cisco NCS 6000 Series Configuration Manual page 244

Configuring Nonstop Forwarding for IS-IS
8. show running-config [ command ]
DETAILED STEPS
Command or Action
Step 1 configure
Step 2 router isis instance-id
Example:
RP/0/RP0/CPU0:router(config)# router isis isp
Step 3 nsf { cisco
Example:
RP/0/RP0/CPU0:router(config-isis)# nsf ietf
Step 4 nsf interface-expires number
Example:
RP/0/RP0/CPU0:router(config-isis)# nsf
interface-expires 1
Step 5 nsf interface-timer seconds
Example:
RP/0/RP0/CPU0:router(config-isis) nsf
interface-timer 15
Step 6 nsf lifetime seconds
Example:
RP/0/RP0/CPU0:router(config-isis)# nsf lifetime 20
Step 7 commit
Step 8 show running-config [ command ]
Example:
Routing Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
222
| ietf }
Purpose
Enables IS-IS routing for the specified routing instance,
and places the router in router configuration mode.
• You can change the level of routing to be performed
by a particular routing instance by using the is-type
router configuration command.
Enables NSF on the next restart.
• Enter the cisco keyword to run IS-IS in heterogeneous
networks that might not have adjacent NSF-aware
networking devices.
• Enter the ietf keyword to enable IS-IS in
homogeneous networks where all adjacent networking
devices support IETF draft-based restartability.
Configures the number of resends of an acknowledged
NSF-restart acknowledgment.
• If the resend limit is reached during the NSF restart,
the restart falls back to a cold restart.
Configures the number of seconds to wait for each restart
acknowledgment.
Configures the maximum route lifetime following an NSF
restart.
• This command should be configured to the length of
time required to perform a full NSF restart because it
is the amount of time that the Routing Information
Base (RIB) retains the routes during the restart.
• Setting this value too high results in stale routes.
• Setting this value too low could result in routes purged
too soon.
(Optional) Displays the entire contents of the currently
running configuration file or a subset of that file.
Implementing IS-IS