Alteon Application Switch Operating System Application Guide
High Availability
578 Document ID: RDWR-ALOS-V2900_AG1302
Session Failover for Active-Standby Configurations
Although group-based VRRP is supported for active-standby configurations, it is not required in
order to enable session failover for active-standby configurations. However, group-based VRRP is
required in order to enable session failover for hot standby configurations.
A VLAN dedicated to interswitch traffic (VLAN 6) is required to avoid network loops. The interswitch
link does not require IP interfaces in the VLAN.
You do not need to enable the Spanning Tree protocol in active-standby configurations.
To enable session failover for active-standby configurations
1. Connect an interswitch link.
2. Enable interswitch on connected ports.
3. Enable service based session failover.
Figure 90 - Session Failover for Active-Standby Configurations, page 579
illustrates a service-based
session failover network topology for active-standby configurations.
>> /cfg/slb/port x/intersw
Enter VLAN Number: 202
Current inter-switch processing: disabled
Enter new inter-switch processing [d/e]: e
>>/cfg/slb/virt x/service 80/mirror ena
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