BGP Peer commands

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

neighbor peer shutdown	BGP
no neighbor peer shutdown	BGP

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.

neighbor peer ebgp-multihop	BGP
no neighbor peer ebgp-multihop	BGP

neighbor peer description ...	BGP
no neighbor peer description ...	BGP

Set description of the peer.

neighbor peer version version

BGP

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.

neighbor peer interface ifname	BGP
no neighbor peer interface ifname	BGP

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.

neighbor peer next-hop-self	BGP
no neighbor peer next-hop-self	BGP

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

neighbor peer update-source	BGP
no neighbor peer update-source	BGP

neighbor peer default-originate	BGP
no neighbor peer default-originate	BGP

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.

neighbor peer port port	BGP
neighbor peer port port	BGP

neighbor peer send-community	BGP
neighbor peer send-community	BGP

neighbor peer weight weight	BGP
no neighbor peer weight weight	BGP

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

neighbor peer maximum-prefix number	BGP
no neighbor peer maximum-prefix number	BGP