Dell Configuration Guide for the S4048–ON System 9.14.2.5

BGP peer group

To configure multiple BGP neighbors at one time, create and populate a BGP peer group.

If you want to configure multiple BGP neighbors with similar policies (route maps, distribute lists, and so on), you can group the respective neighbors under a peer group. A peer group contains a set of BGP neighbors which share common configurations. You can group neighbors that share configurations in a BGP peer group to simplify neighbor configuration. An advantage of peer groups is that members of a peer group inherit the configuration properties of the group and share same update policy.

Dell EMC Networking OS allows a maximum of 256 peer groups.

Configuration rules in a peer group:

• You must create a peer group first before adding the neighbors in the peer group.

• If you remove any configuration parameters from a peer group, it will apply to all the neighbors configured under that peer group.

• If you have not configured a parameter for an individual neighbor in the peer group, the neighbor uses the value configured in the peer group.

• If you reset any parameter for an individual neighbor, it will override the value set in the peer group.

• If you add a configuration parameters to a peer group that already has neighbors, the parameter value is applied to all the neighbors which does not have the value set. If a neighbor has a value explicitly set, the value overrides the value set for the peer group.

• You cannot remove the remote AS configuration from the peer group, if the peer group has neighbors.

• If you remove any parameter value in a peer group, the value of the parameter is set to the default for all the neighbors in the peer group, unless there is an explicit parameter set for an individual neighbor.

After you create a peer group, you can configure route policies for it. For information about configuring route policies for a peer group, refer to Filtering BGP Routes. See Example-Configuring BGP peer groups for configuring multiple BGP neighbors and enabling peer groups.