38 Contents
IP Helper Interface Configuration . . . . . . . . 1102
IP Helper Statistics . . . . . . . . . . . . . . . . 1104
Configuring L2 and L3 Relay Features (CLI) . . . . . . 1105
Configuring L2 DHCP Relay . . . . . . . . . . . . 1105
Configuring L3 Relay (IP Helper) Settings . . . . 1107
Relay Agent Configuration Example. . . . . . . . . . 1109
35 Configuring OSPF and OSPFv3 . . . . . . . 1111
OSPF Overview. . . . . . . . . . . . . . . . . . . . . 1112
What Are OSPF Areas and Other OSPF
Topology Features?. . . . . . . . . . . . . . . . 1112
What Are OSPF Routers and LSAs? . . . . . . . 1113
How Are Routes Selected? . . . . . . . . . . . . 1113
How Are OSPF and OSPFv3 Different? . . . . . . 1113
OSPF Feature Details. . . . . . . . . . . . . . . . . . 1114
Max Metric . . . . . . . . . . . . . . . . . . . . 1114
Static Area Range Cost . . . . . . . . . . . . . . 1116
LSA Pacing . . . . . . . . . . . . . . . . . . . . 1117
Flood Blocking . . . . . . . . . . . . . . . . . . 1118
Default OSPF Values. . . . . . . . . . . . . . . . . . 1120
Configuring OSPF Features (Web). . . . . . . . . . . 1122
OSPF Configuration. . . . . . . . . . . . . . . . 1122
OSPF Area Configuration. . . . . . . . . . . . . 1123
OSPF Stub Area Summary . . . . . . . . . . . . 1126
OSPF Area Range Configuration . . . . . . . . . 1127
OSPF Interface Statistics. . . . . . . . . . . . . 1128
OSPF Interface Configuration. . . . . . . . . . . 1129
OSPF Neighbor Table. . . . . . . . . . . . . . . 1130
OSPF Neighbor Configuration . . . . . . . . . . 1131
OSPF Link State Database . . . . . . . . . . . . 1132