Users Guide

Table Of Contents
38 Contents
33 Layer-2 and Layer-3 Relay Features . . 1225
L2 and L3 Relay Overview . . . . . . . . . . . . . . . 1225
What Is L2 DHCP Relay?
. . . . . . . . . . . . . 1225
What Is L3 DHCP Relay?
. . . . . . . . . . . . . 1229
What Is the IP Helper Feature?
. . . . . . . . . . 1230
Default L2/L3 Relay Values
. . . . . . . . . . . . . . . 1234
Configuring L2 and L3 Relay Features (Web)
. . . . . 1235
L2 DHCP Relay Global Configuration
. . . . . . . 1235
L2 DHCP Relay Interface Configuration
. . . . . 1236
L2 DHCP Relay Interface Statistics
. . . . . . . . 1238
L2 DHCP Relay VLAN Configuration
. . . . . . . 1239
DHCP Relay Agent Configuration
. . . . . . . . . 1239
IP Helper (L3 DHCP Relay) Global Configuration
. 1241
IP Helper (L3 DHCP Relay) Interface Configuration
1243
IP Helper Statistics
. . . . . . . . . . . . . . . . 1245
Configuring L2 and L3 Relay Features (CLI)
. . . . . . 1246
Configuring L2 DHCP Relay
. . . . . . . . . . . . 1246
Configuring L3 Relay (IP Helper) Settings
. . . . 1248
Relay Agent Configuration Example
. . . . . . . . . . 1250
34 OSPF and OSPFv3. . . . . . . . . . . . . . . . . 1253
OSPF Overview. . . . . . . . . . . . . . . . . . . . . 1254
What Are OSPF Areas and Other OSPF Topology
Features?
. . . . . . . . . . . . . . . . . . . . . 1254
What Are OSPF Routers and LSAs?
. . . . . . . 1255
How Are Routes Selected?
. . . . . . . . . . . . 1255
How Are OSPF and OSPFv3 Different?
. . . . . . 1255
OSPF Feature Details
. . . . . . . . . . . . . . . . . . 1256