- Routing Information Protocol Versions 1 and 2 (RIPv1 and RIPv2) - Generic Routing Encapsulation (GRE) and Multipoint GRE (MGRE) - Cisco Express Forwarding - Standard 802.1d Spanning Tree Protocol - Layer 2 Tunneling Protocol (L2TP) - Network Address Translation (NAT) - Dynamic Host Configuration Protocol (DHCP) Server, relay, and client - Dynamic DNS - DNS Proxy - DNS Spoofing - Access Control Lists (ACLs) - IPv4 and IPv6 multicast - Open Shortest Path First (OSPF) - Border Gateway Protocol (BGP) - Performance Routing (PfR) - Enhanced Interior Gateway Routing Protocol (EIGRP) - Virtual Route Forwarding (VRF) Lite - Next Hop Resolution Protocol (NHRP) - Bidirectional Forwarding Detection (BFD) - Web Cache Communication Protocol (WCCP) |