The table of peer groups. A peer group is a set of peers that share a common peer group configuration. Using peer groups simplifies peer configuration. Instead of configuring many peers with the same set of configuration values, you can configure a single peer group and then assign peers to the peer group. Each peer in a peer group has its bgpPeerConfigPeergr value set to the peer group index (bgpPeergrIndex). If a peer is not in a peer group then its bgpPeerConfigPeergr value is 0. The configuration fields for a peer group mirror configuration fields for individual peers. If a peer belongs to a peer group, then the peer's configuration values may be taken from either the AMB_BGP_PEER MIB or the AMB_BGP_PEERGR MIB. Which values are used is controlled by configuration usage fields in the AMB_BGP_PEER MIB.