740 BigIron RX Series Configuration Guide53-1001986-01Activating and disabling BGP426• Change other load-sharing parameters.• Define route flap dampening parameters.• Add, change, or negate redistribution parameters (except changing the default MED; seebelow).• Add, change, or negate route maps (when used by the network command or a redistributioncommand).• Aggregate routes.After resetting neighbor sessionsThe following parameter changes take effect only after the router’s BGP4 sessions are cleared, orreset using the “soft” clear option (Refer to “Closing or resetting a neighbor session” on page 811):• Change the Hold Time or Keep Alive Time.• Add, change, or negate filter tables that affect inbound and outbound route policies.After disabling and re-enabling redistributionThe following parameter change takes effect only after you disable and then re-enableredistribution:• Change the default MED (metric).Activating and disabling BGP4BGP4 is disabled by default. To enable BGP4 and place your BigIron RX into service as a BGP4router, you must perform the following required steps.1. Enable the BGP4 protocol.2. Set the local AS number.NOTEBGP4 is not functional until you specify the local AS number.3. Add each BGP4 neighbor (peer BGP4 router) and identify the AS the neighbor is in.4. Save the BGP4 configuration information to the system configuration file.For example, enter commands such as the following.BigIron RX> enableBigIron RX# configure terminalBigIron RX(config)# router bgpBGP4: Please configure 'local-as' parameter in order to enable BGP4.BigIron RX(config-bgp)# local-as 10BigIron RX(config-bgp)# write memoryThe router bgp command enables the BGP4 protocol.(For information on the local AS number, refer to “Setting the local AS number” on page 759.)
