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bgp fast-external-fallover
Enables and Disables BGP fast external fallover for this router.
Syntax: [no] bgp fast-external-fallover
Description: BGP fallover for external peers is triggered by a session flap. By default the timming of the fallover is based upon the receipt of an interface change notification when the flap takes place. It is not always desirable to trigger a fallover every time a session flaps. Disabling BGP fast external fallover changes the fallover trigger from the interface change notification to the value in seconds set by the BGP hold-timer using the neighbor timers command.
The bgp fast-external-fallover command in router configuration mode enables and disables BGP fast external fallover.
Use the bgp fast-external-fallover command to enable BGP fast external fallover.
Use the no bgp fast-external-fallover command to disable BGP fast external fallover.
Factory Default: Enabled.
Command Mode: Router Configuration.
Example 1: The following example disables BGP fast external fallover:
router#show running-config bgp
!
router bgp 300
neighbor 10.200.93.51 remote-as 250
neighbor 10.200.93.51 ebgp-multihop 3
router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
router(config)#router bgp 300
router(config-router)#no bgp fast-external-fallover
router(config-router)#end
router#show running-config bgp
!
router bgp 300
no bgp fast-external-fallover
neighbor 10.200.93.51 remote-as 250
neighbor 10.200.93.51 ebgp-multihop 3
router#
Example 2: The following example re-enables BGP fast external fallover:
router#show running-config bgp
!
router bgp 300
no bgp fast-external-fallover
neighbor 10.200.93.51 remote-as 250
neighbor 10.200.93.51 ebgp-multihop 3
router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
router(config)#router bgp 300
router(config-router)#bgp fast-external-fallover
router(config-router)#end
router#show running-config bgp
!
router bgp 300
neighbor 10.200.93.51 remote-as 250
neighbor 10.200.93.51 ebgp-multihop 3
router#
Related Commands: neighbor timers
show running-config bgp
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Copyright © 2004
Avici Systems Inc.
Avici® and TSR®
is a registered trademark of Avici Systems Inc.
IPriori™, Composite Links™, SSR™, QSR, and NSR® are
trademarks of Avici Systems Inc.
Source
File Name: BGP_Nd.fm
HTML File Name: BGP_Nd10.html
Last Updated: 05/10/04 at 16:36:55