Users Guide

38 Contents
33 Routing Interfaces . . . . . . . . . . . . . . . . 1191
Routing Interface Overview . . . . . . . . . . . . . . 1191
What Are VLAN Routing Interfaces?
. . . . . . . 1191
What Are Loopback Interfaces?
. . . . . . . . . 1192
What Are Tunnel Interfaces?
. . . . . . . . . . . 1193
Why Are Routing Interfaces Needed? . . . . . . 1194
Default Routing Interface Values . . . . . . . . . . . 1196
Configuring Routing Interfaces (Web)
. . . . . . . . . 1197
IP Interface Configuration
. . . . . . . . . . . . 1197
DHCP Lease Parameters
. . . . . . . . . . . . . 1198
VLAN Routing Summary
. . . . . . . . . . . . . 1198
Tunnel Configuration
. . . . . . . . . . . . . . . 1199
Tunnels Summary. . . . . . . . . . . . . . . . . 1200
Loopbacks Configuration
. . . . . . . . . . . . . 1201
Loopbacks Summary
. . . . . . . . . . . . . . . 1202
Configuring Routing Interfaces (CLI) . . . . . . . . . 1203
Configuring VLAN Routing Interfaces (IPv4)
. . . 1203
Configuring Loopback Interfaces. . . . . . . . . 1205
Configuring Tunnels. . . . . . . . . . . . . . . . 1206
34 Layer-2 and Layer-3 Relay
Features . . . . . . . . . . . . . . . . . . . . . . . 1207
L2 and L3 Relay Overview . . . . . . . . . . . . . . . 1207
What Is L2 DHCP Relay?
. . . . . . . . . . . . . 1207
What Is L3 DHCP Relay? . . . . . . . . . . . . . 1211
What Is the IP Helper Feature?
. . . . . . . . . . 1212
Default L2/L3 Relay Values
. . . . . . . . . . . . . . . 1216
Configuring L2 and L3 Relay Features (Web) . . . . . 1217