9.6 Peer configuration

In a router bgp clause there are neighbor specific configurations required.

BGP Command: neighbor peer shutdown {}

BGP Command: no neighbor peer shutdown {}

Shutdown the peer. We can delete the neighbor's configuration by no neighbor peer remote-as as-number but all configuration of the neighbor will be deleted. When you want to preserve the configuration, but want to drop the BGP peer, use this syntax.

BGP Command: neighbor peer ebgp-multihop {}

BGP Command: no neighbor peer ebgp-multihop {}

BGP Command: neighbor peer description ... {}

BGP Command: no neighbor peer description ... {}

Set description of the peer.

BGP Command: neighbor peer version version {}

Set up the neighbor's BGP version. version can be 4, 4+ or 4-. BGP version 4 is the default value used for BGP peering. BGP version 4+ means that the neighbor supports Multiprotocol Extensions for BGP-4. BGP version 4- is similar but the neighbor speaks the old Internet-Draft revision 00's Multiprotocol Extensions for BGP-4. Some routing software is still using this version.

BGP Command: neighbor peer interface ifname {}

BGP Command: no neighbor peer interface ifname {}

When you connect to a BGP peer over an IPv6 link-local address, you have to specify the ifname of the interface used for the connection.

BGP Command: neighbor peer next-hop-self {}

BGP Command: no neighbor peer next-hop-self {}

This command specifies an announced route's nexthop as being equivalent to the address of the bgp router.

BGP Command: neighbor peer update-source {}

BGP Command: no neighbor peer update-source {}

BGP Command: neighbor peer default-originate {}

BGP Command: no neighbor peer default-originate {}

bgpd's default is to not announce the default route (0.0.0.0/0) even it is in routing table. When you want to announce default routes to the peer, use this command.

BGP Command: neighbor peer port port {}

BGP Command: neighbor peer port port {}

BGP Command: neighbor peer send-community {}

BGP Command: neighbor peer send-community {}

BGP Command: neighbor peer weight weight {}

BGP Command: no neighbor peer weight weight {}

This command specifies a default weight value for the neighbor's routes.

BGP Command: neighbor peer maximum-prefix number {}

BGP Command: no neighbor peer maximum-prefix number {}