Administrator Guide

Following is an example to enable BGP conguration in the router B.
RouterB# configure terminal
RouterB(conf)# router bgp 45000
RouterB(conf-router_bgp)# bgp router-id 172.17.1.99
RouterB(conf-router_bgp)# timers bgp 70 120
RouterB(conf-router_bgp)# neighbor 192.168.1.2 remote-as 40000
RouterB(conf-router_bgp)# exit
RouterB(conf)#
The show ip bgp summary displays BGP conguration. Following is the sample output for show ip bgp summary command for
router A.
RouterA#show ip bgp summary
BGP router identifier 10.1.1.99, local 40000
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
1 neighbor(s) using 40960 bytes of memory
Neighbor AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/Pfx
192.168.1.1 45000 10 20 0 0 0 00:06:11 0
Following is the sample output for show ip bgp summary command for Router B.
RouterB#show ip bgp summary
BGP router identifier 172.17.1.99, local 45000
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
1 neighbor(s) using 40960 bytes of memory
Neighbor AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/Pfx
192.168.1.2 40000 10 20 0 0 0 00:06:11 0
BGP peer group
To congure multiple BGP neighbors at one time, create and populate a BGP peer group.
If you want to congure 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 congurations. You can group neighbors
that share congurations in a BGP peer group to simplify neighbor conguration. An advantage of peer groups is that members of a peer
group inherit the conguration properties of the group and share same update policy.
Dell EMC Networking OS allows a maximum of 256 peer groups.
Tasks involved in conguring a BGP peer group:
• Create a peer group by assigning it a name
• Adding members (neighbors) to the peer group
Conguration rules in a peer group:
• You must create a peer group rst before adding the neighbors in the peer group.
• If you remove any conguration parameters from a peer group, it will apply to all the neighbors congured under that peer group.
• If you have not congured a parameter for an individual neighbor in the peer group, the neighbor uses the value congured 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 conguration 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 conguration 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.
Border Gateway Protocol (BGP)
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