The Time To Live used by the connection on this peer. Directly connected peers should have this set to one. A value of zero indicates the TTL socket option will not be set for this peer. The sockets layer will therefore insert its default value of TTL into all packets. This field is ignored for peers identified only by interface since they must be directly connected. This field can be changed at any time. However, if the field is changed while the peer is admin_status UP, the change will only take effect after the peer has been cycled admin_status DOWN and then UP, thus forcing the peer session to be restarted. In this case, until the peer is set admin_status DOWN, the peer will be marked as out of date (as reported by the config_state field in the AMB_BGP_PEER_STATUS row for the peer).