Nortel Alteon OS 42C4911 Application Manual page 8

Alteon OS Application Guide
OSPF Configuration Examples 204
Example 1: Simple OSPF Domain 205
Example 2: Virtual Links 207
Example 3: Summarizing Routes 211
Verifying OSPF Configuration 213
Part 3: High Availability
Fundamentals 215
Chapter 13: High Availability 217
Layer 2 Failover 218
VLAN Monitor 218
Setting the Failover Limit 219
L2 Failover with Other Features 219
Configuration Guidelines 220
L2 Failover Configurations 220
Configuring Trunk Failover 223
VRRP Overview 224
VRRP Components 224
VRRP Operation 226
Selecting the Master VRRP Router 226
Failover Methods 227
Active-Active Redundancy 228
Hot-Standby Redundancy 229
Alteon OS extensions to VRRP 230
Tracking VRRP Router Priority 230
Virtual Router Deployment Considerations 231
Assigning VRRP Virtual Router ID 231
Configuring the Switch for Tracking 231
High Availability Configurations 233
Active-Active Configuration 233
Hot-Standby Configuration 238
8 42C4911, January 2007