Administrator Guide

Table Of Contents
Contents 37
What Are Tunnel Interfaces?. . . . . . . . . . . 1143
Why Are Routing Interfaces Needed?
. . . . . . 1144
Default Routing Interface Values
. . . . . . . . . . . 1146
Configuring Routing Interfaces (Web)
. . . . . . . . . 1147
IP Interface Configuration
. . . . . . . . . . . . 1147
DHCP Lease Parameters
. . . . . . . . . . . . . 1148
VLAN Routing Summary
. . . . . . . . . . . . . 1148
Tunnel Configuration
. . . . . . . . . . . . . . . 1149
Tunnels Summary
. . . . . . . . . . . . . . . . . 1150
Loopbacks Configuration . . . . . . . . . . . . . 1151
Loopbacks Summary . . . . . . . . . . . . . . . 1152
Configuring Routing Interfaces (CLI)
. . . . . . . . . 1153
Configuring VLAN Routing Interfaces (IPv4)
. . . 1153
Configuring Loopback Interfaces
. . . . . . . . . 1155
Configuring Tunnels
. . . . . . . . . . . . . . . 1156
34 Layer-2 and Layer-3 Relay
Features . . . . . . . . . . . . . . . . . . . . . . . 1157
L2 and L3 Relay Overview . . . . . . . . . . . . . . . 1157
What Is L3 DHCP Relay?
. . . . . . . . . . . . . 1157
What Is L2 DHCP Relay?
. . . . . . . . . . . . . 1158
What Is the IP Helper Feature?. . . . . . . . . . 1159
Default L2/L3 Relay Values . . . . . . . . . . . . . . 1163
Configuring L2 and L3 Relay Features (Web)
. . . . . 1164
DHCP Relay Global Configuration
. . . . . . . . 1164
DHCP Relay Interface Configuration
. . . . . . . 1165
DHCP Relay Interface Statistics
. . . . . . . . . 1167
DHCP Relay VLAN Configuration
. . . . . . . . . 1168
DHCP Relay Agent Configuration. . . . . . . . . 1168