nexthop trigger-delay

To specify a Border Gateway Protocol (BGP) delay for triggering next-hop calculations, use the nexthop trigger-delay command. To set the trigger delay to the default value, use the no form of this command.

nexthop trigger-delay { critical delay | non-critical delay }

no nexthop trigger-delay { critical delay | non-critical delay }

Syntax Description

critical delay
Specifies the critical next-hop trigger delay, in milliseconds. The range is from 0 to 4294967295. The default is 3000.
non-critical delay
Specifies the noncritical next-hop trigger delay, in milliseconds. The range is from 0 to 4294967295. The default is 10000.

Command Default

Critical delay: 3000 milliseconds.
Noncritical delay: 10000 milliseconds.

Command Modes

Address-family configuration mode

Command History

Release
Modification
5.0(3)N1(1)
This command was introduced.

Usage Guidelines

Use the nexthop trigger-delay command to modify when BGP processes next-hop address tracking events.

The non-critical delay value must always be set to a value that is at least equal or greater to the critical delay value.

The delay should be slightly higher than the time it takes for the Interior Gateway Protocol (IGP) to settle into a steady state after some event (IGP convergence time).

This command requires a LAN Enterprise Services license.

Examples

This example shows how to modify the next-hop address tracking delay:

switch# configure terminal
switch(config)# router bgp 1.0
switch(config-router)# address-family ipv4 unicast
switch(config-router-af)# nexthop trigger-delay critical 5000 non-critical 20000
 

Related Commands

Command
Description
feature bgp
Enables BGP.
nexthop route-map
Configures a route map for BGP next-hop address tracking.