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Web OS 10.0 Application Guide
Active-Standby Redundancy
In an active-standby configuration, shown in
switches support active traffic but are configured so that they do not simultaneously support
the same service. Each switch is active for its own set of services, such as IP routing interfaces
or load-balancing virtual server IP addresses, and acts as a standby for other services on the
other switch. If either switch fails, the remaining switch takes over processing for all services.
The backup switch may forward Layer 2 and Layer 3 traffic, as appropriate.
N
OTE
on both switches.
Figure 11-4 Active-Standby Redundancy
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Chapter 11: High Availability
–
In an active-standby configuration, the same service cannot be active simultaneously
Router
Internet
Router
Figure
11-4, two Web switches are used. Both
Standby VIP 1
VIP: 205.178.13.226
Active VIP 2
VIP: 205.178.13.240
Standby VIP 3
VIP: 205.178.13.110
Active
Active
Active VIP 1
VIP: 205.178.13.226
Standby VIP 2
VIP: 205.178.13.240
Active VIP 3
VIP: 205.178.13.110
212777-A, February 2002
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