A text string describing the local interface associated with this subscriber. Types/formats/examples for this string include: ERX: <portLocation> == <slot>/<port>; E320: <portLocation> == <slot>/<adapter>/<port>; ATM Virtual Circuit atm <portLocation>:<vpi>.<vci> 'atm 3/2:0.100' (ERX) 'atm 3/0/2:0.100' (E320) Ethernet { fastEthernet | gigabitEthernet } <portLocation> 'fastEthernet 3/2' (ERX) 'gigabitEthernet 3/2' (ERX) 'gigabitEthernet 3/0/2' (E320) 'tenGigabitEthernet 3/0/2' (E320) Ethernet VLAN { fastEthernet | gigabitEthernet } <portLocation>:<vlanID> 'fastEthernet 3/2:1000' (ERX) 'gigabitEthernet 3/2:1000' (ERX) 'gigabitEthernet 3/0/2:1000' (E320) 'tenGigabitEthernet 3/0/2:1000' (E320) Channelized Serial serial <portLocation>:<channelSpecifier>[/<channelSpecifier>]* 'serial 3/2:4' (ERX T1/E1) 'serial 3/2:2/4' (ERX T3/E3) 'serial 3/2:2/1/1/4' (ERX OC3/OC12 - channelized DS3) 'serial 3/2:2/1/1/1/4' (ERX OC3/OC12 - virtual tributaries) 'serial 3/0/2:2/1/1/4' (E320 OC3/OC12 - channelized DS3) 'serial 3/0/2:2/1/1/1/4' (E320 OC3/OC12 - virtual tributaries) L2TP over IP ip:<localIpAddr>:<peerIpAddr>:<localTunnelID>:<peerTunnelID>: <localSessionID>:<peerSessionID>:<callSerialNumber> 'ip:10.10.0.1:20.20.0.2:1234:5678:9abc:def0:6789abcd' (Note: tunnelIDs, sessionIDs, and callSerialNumber are in hexadecimal.) Other formats may be supported over time.