Parameter changes that take eect immediately
The following parameter changes take eect immediately:
• Enable or disable BGP4.
• Set or change the local AS.
• Add neighbors.
• Change the update timer for route changes.
• Disable or enable fast external failover.
• Specify individual networks that can be advertised.
• Change the default local preference, default information originate setting, or administrative distance.
• Enable or disable use of a default route to resolve a BGP4 next-hop route.
• Enable or disable MED (metric) comparison.
• Require the rst AS in an update from an EBGP neighbor to be the neighbor AS.
• Change MED comparison parameters.
• Disable comparison of the AS-Path length.
• Enable comparison of the device ID.
• Enable next-hop recursion.
• Change the default metric.
• Disable or re-enable route reection.
• Congure confederation parameters.
• Disable or re-enable load sharing.
• Change the maximum number of load sharing paths.
• Change other load-sharing parameters.
• Dene route ap dampening parameters.
• Add, change, or negate redistribution parameters (except changing the default MED as described in Changing the default MED
(Metric) used for route redistribution on page 382).
• Add, change, or negate route maps (when used by the network command or a redistribution command).
• Aggregate routes.
• Apply maximum AS path limit settings for UPDATE messages.
Parameter changes that take
eect after resetting neighbor sessions
The following parameter changes take eect only after the BGP4 sessions on the device are cleared, or reset using the "soft" clear
option:
• Change the Hold Time or Keep Alive Time.
• Aggregate routes
• Add, change, or negate lter tables that aect inbound and outbound route policies.
• Apply maximum AS path limit settings to the RIB.
BGP4 parameters
FastIron Ethernet Switch Layer 3 Routing
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