Cisco Catalyst 6500 Series Configuration Manual page 284

Understanding Failover
The path that the traffic takes after failover depends on which device fails as follows:
FWSM failure only—If the primary FWSM fails, then the secondary FWSM becomes active.
•
However, if the primary switch is still active, all VLAN traffic destined for the FWSM continues to
enter the primary switch. The secondary (now active) FWSM receives and sends all traffic over the
trunk
Figure 15-3 FWSM Failure Only
Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide
15-6
(Figure 15-3).
VLAN 100
Active Switch
VLAN 200
Standby
FWSM
VLAN 202
VLAN 201
Internet
Standby Switch
Failover Links:
VLAN 11
VLAN 10
Trunk:
VLANs 200, 201,
202, 203, 10, 11
Eng
VLAN 203
Mktg
Inside
Chapter 15 Using Failover
Active
FWSM
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