Configuring Nonstop Forwarding For Is-Is - Cisco NCS 6000 Series Configuration Manual

Implementing IS-IS
Command or Action
Step 16 show isis interface [ type interface-path-id | level {
1 | 2 }] [ brief ]
Example:
RP/0/RP0/CPU0:router# show isis interface
GigabitEthernet 0/1/0/1 brief
Step 17
show isis [ instance instance-id ] database [ level {
1 | 2 }] [ detail | summary | verbose ] [ * | lsp-id ]
Example:
RP/0/RP0/CPU0:router# show isis database level 1
Step 18
show isis [ instance instance-id ] lsp-log [ level { 1
| 2 }]
Example:
RP/0/RP0/CPU0:router# show isis lsp-log
Step 19
show isis database-log [ level { 1 | 2 }]
Example:
RP/0/RP0/CPU0:router# show isis database-log level
1

Configuring Nonstop Forwarding for IS-IS

This task explains how to configure your router with NSF that allows the Cisco IOS XR software to
resynchronize the IS-IS link-state database with its IS-IS neighbors after a process restart. The process restart
could be due to an:
• RP failover (for a warm restart)
• Simple process restart (due to an IS-IS reload or other administrative request to restart the process)
• IS-IS software upgrade
In all cases, NSF mitigates link flaps and loss of user sessions. This task is optional.
SUMMARY STEPS
1. configure
2. router isis instance-id
3. nsf
4. nsf interface-expires number
5. nsf interface-timer seconds
6. nsf lifetime seconds
7. commit
{ cisco | ietf }
Routing Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
Configuring Nonstop Forwarding for IS-IS
Purpose
(Optional) Displays information about the IS-IS interface.
(Optional) Displays the IS-IS LSP database.
(Optional) Displays LSP log information.
(Optional) Display IS-IS database log information.
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