Contents 3531 Configuring Routing Interfaces . . . . . . 1021Routing Interface Overview . . . . . . . . . . . . . . 1021What Are VLAN Routing Interfaces? . . . . . . . 1021What Are Loopback Interfaces? . . . . . . . . . 1022What Are Tunnel Interfaces? . . . . . . . . . . . 1023Why Are Routing Interfaces Needed? . . . . . . 1024Default Routing Interface Values . . . . . . . . . . . 1026Configuring Routing Interfaces (Web) . . . . . . . . . 1027IP Interface Configuration . . . . . . . . . . . . 1027DHCP Lease Parameters . . . . . . . . . . . . . 1028VLAN Routing Summary . . . . . . . . . . . . . 1028Tunnel Configuration . . . . . . . . . . . . . . . 1029Tunnels Summary . . . . . . . . . . . . . . . . . 1030Loopbacks Configuration . . . . . . . . . . . . . 1031Loopbacks Summary . . . . . . . . . . . . . . . 1032Configuring Routing Interfaces (CLI) . . . . . . . . . 1033Configuring VLAN Routing Interfaces (IPv4) . . . 1033Configuring Loopback Interfaces. . . . . . . . . 1035Configuring Tunnels . . . . . . . . . . . . . . . 103632 Configuring DHCP Server and RelaySettings . . . . . . . . . . . . . . . . . . . . . . . . 1037DHCP Overview . . . . . . . . . . . . . . . . . . . . 1037How Does DHCP Work? . . . . . . . . . . . . . 1038What are DHCP Options? . . . . . . . . . . . . . 1038How is DHCP Option 82 Used? . . . . . . . . . . 1039What Additional DHCP Features Does theSwitch Support? . . . . . . . . . . . . . . . . . 1041
