BigIron RX Series Configuration Guide 73953-1001986-01Configuring BGP4 26When parameter changes take effectSome parameter changes take effect immediately while others do not take full effect until therouter’s sessions with its neighbors are reset.ImmediatelyThe following parameter changes take effect immediately:• Enable or disable BGP.• Set or change the local AS.• Add neighbors.• Change the update timer for route changes.• Disable or enable fast external fallover.• Specify individual networks that can be advertised.• Change the default local preference, default information originate setting, or administrativedistance.• Enable or disable use of a default route to resolve a BGP4 next-hop route.• Enable or disable MED (metric) comparison.• Require the first AS in an Update from an EBGP neighbor to be the neighbor’s AS.• Change MED comparison parameters.• Disable comparison of the AS-Path length.• Enable comparison of the router ID.• Enable next-hop recursion.• Change the default metric.• Disable or re-enable route reflection.• Configure confederation parameters.• Disable or re-enable load sharing.• Change the maximum number of load-sharing paths.redistribute x x “Modifying redistribution parameters” onpage 776show x x x “Displaying BGP4 information” on page 814table-map x x “Using a table map to set the tag value” onpage 779timers x “Changing the keep alive time and hold time”on page 779update-time x x “Changing the BGP4 next-hop update timer”on page 780TABLE 118 IPv4 BGP commands at different configuration levels (Continued)Command Global(iPv4 andIPv6)IPv4 addressfamily unicastIPv4 addressfamilymulticastSee
