Cisco Cisco IOS Software Release 12.2(20)S
Cisco Nonstop Forwarding
How to Implement Cisco NSF
10
Stateful Switchover
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Configuring and Verifying CEF NSF
The CEF NSF feature operates by default while the networking device is running in SSO mode. No
configuration is necessary.
configuration is necessary.
The following task explains how to verify that CEF is NSF-capable.
SUMMARY STEPS
1.
enable
2.
show cef state
DETAILED STEPS
Configuring and Verifying BGP NSF
The following task explains how to configure BGP for NSF. Repeat this task on each of the BGP NSF
peer devices.
peer devices.
SUMMARY STEPS
1.
enable
2.
configure terminal
3.
router bgp autonomous-system-number
4.
bgp graceful-restart [restart-time seconds | stalepath-time seconds]
Command
Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
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Enter your password if prompted.
Step 2
show cef state
Example:
Router# configure terminal
Displays the state of Cisco Express Forwarding on
a networking device.
a networking device.