3com MSR 20-21 Multi-Service Router. Ethernet LAN data transfer rates: 100 Mbit/s. Networking standards: IEEE 802.1X. Routing protocols: IGMP, IS-IS, OSPF, Supported network protocols: ARP, VLAN, STP, RSTP, MSTP, GARP, GVRP, LACP, DLDP. Firewall security: ASPF, ACL, Authentication method: RADIUS, TACACS, Security algorithms supported: 3DES, AES, DES, IKE, L2TP, PKI, RSA, SSL. Internal memory: 384 MB