Dell C9000 Series Networking Configuration Manual page 217

To add an internal BGP (IBGP) neighbor, configure the as-number parameter with the same BGP as-
number configured in the router bgp as-number command.
Examples of Working with Peer Groups
After you create a peer group, you can use any of the commands beginning with the keyword neighbor to
configure that peer group.
When you add a peer to a peer group, it inherits all the peer group's configured parameters.
A neighbor cannot become part of a peer group if it has any of the following commands configured:
•
neighbor advertisement-interval
•
neighbor distribute-list out
•
neighbor filter-list out
•
neighbor next-hop-self
•
neighbor route-map out
•
neighbor route-reflector-client
•
neighbor send-community
A neighbor may keep its configuration after it was added to a peer group if the neighbor's configuration is
more specific than the peer group's and if the neighbor's configuration does not affect outgoing updates.
NOTE: When you configure a new set of BGP policies for a peer group, always reset the peer group by
entering the clear ip bgp peer-group peer-group-name command in EXEC Privilege mode.
To view the configuration, use the show config command in CONFIGURATION ROUTER BGP mode. When
you create a peer group, it is disabled (shutdown). The following example shows the creation of a peer group
(zanzibar) (in bold).
Dell(conf-router_bgp)#neighbor zanzibar peer-group
Dell(conf-router_bgp)#show conf
!
router bgp 45
bgp fast-external-fallover
bgp log-neighbor-changes
neighbor zanzibar peer-group
neighbor zanzibar shutdown
neighbor 10.1.1.1 remote-as 65535
neighbor 10.1.1.1 shutdown
neighbor 10.14.8.60 remote-as 18505
neighbor 10.14.8.60 no shutdown
Dell(conf-router_bgp)#
To enable a peer group, use the neighbor peer-group-name no shutdown command in
CONFIGURATION ROUTER BGP mode (shown in bold).
Dell(conf-router_bgp)#neighbor zanzibar no shutdown
Dell(conf-router_bgp)#show config
!
router bgp 45
bgp fast-external-fallover
bgp log-neighbor-changes
neighbor zanzibar peer-group
neighbor zanzibar no shutdown
neighbor 10.1.1.1 remote-as 65535
neighbor 10.1.1.1 shutdown
neighbor 10.14.8.60 remote-as 18505
Border Gateway Protocol IPv4 (BGPv4) 217