The Time To Live used by the connection on peers in this peer group. For individual peers, this can be configured using bgpPeerTtl. Directly connected peers should have this set to one. A value of zero indicates the TTL socket option will not be set for peers in this peer group. The sockets layer will therefore insert its default value of TTL into all packets. This field can be changed at any time. However, if a peer is configured to use the peer group field and the field is changed while the peer is active, depending on the setting of the bgpPeergrResetPeerOnCfgChange field, the peer session may either be immediately reset, or the configuration change is not applied until the peer session is restarted.