ATM Interface - WAN interface : 8*ATM - Stm-1, ATM-E1(future) - CBR, rt-VBR, nrt-VBR, UBR - PPP over ATM - Traffic Management - 1024 PVCs - OAM Cell Support (F5 OAM) IP Interface - LAN I/F Two 100BT - DHCP Server/Client, NAT, Radius Client - IP packet Fitering - Routting : RIP v1/v2, ISPF, static - Security : RAP, CHAP, ACL - 256 tagged VLAN Support - 4096 Mac address support - Full Duplex Fast Ethernet for backbone interface