Redistributing Routes from BGP

If you have redistributed routes from BGP into an IGP, by default only EBGP routes are redistributed. You can issue the bgp redistribute-internal command followed by clearing all BGP sessions to permit the redistribution of IBGP routes in addition to EBGP routes.

Note: This default behavior does not apply to VPN routes. Redistribution of IBGP routes (routes received from an internal BGP peer) in a VRF is always enabled. You do not have to issue this command to enable redistribution of internal BGP routes in a VRF.

bgp redistribute-internal

• Use to enable the redistribution of IBGP routes in addition to EBGP routes into IGPs configured for BGP route redistribution.
• Redistribution of IBGP routes is disabled by default, except within a VRF where IBGP routes are always redistributed.
• You must clear all BGP sessions after issuing this command for it to take effect.
• Example

  host1(config-router)#bgp redistribute-internal

  host1(config-router)#exit

  host1(config)#exit

  host1(config)#clear ip bgp *

• All IBGP and EBGP routes subsequently placed in the IP routing table are redistributed to IGPs that have route redistribution enabled.

  To authorize redistribution of routes that are already present in the IP routing table, you must use the clear ip bgp * command (this command will bounce the BGP sessions) or the clear ip routes * command to reinstall BGP routes in the IP routing table.

• Use the no version to restore the default of permitting the redistribution only of EBGP routes.
• See bgp redistribute-internal.

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