Trend Micro InterScan M Series, Administrator'S Manual

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Trend Micro™ InterScan™ Gateway Security Appliance M-Series Administrator’s Guide
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WARNING! In order for this kind of “failover” to work, LAN bypass must be disabled
(enabled by default) and Link state failover must be enabled (disabled by
default).
LAN Bypass and Link State Failover Settings
In the Preconfiguration console, LAN bypass must be disabled and Link state
failover must be enabled in order for a load-balancing “failover” deployment to
work.
LAN Bypass
LAN bypass is a feature by which, if the appliance encounters an error that causes
scanning to stop, network traffic will still flow through the appliance unscanned, so
that network traffic is not interrupted (enabled by default).
Link State Failover
Link state failover is a feature by which, if either the INT or the EXT port stops func-
tioning, both ports are automatically shut down (disabled by default).
Setting LAN Bypass and Link State Failover Options
If you have previously enabled LAN bypass, you can disable it through the InterScan
Gateway Security Appliance Preconfiguration console. Likewise, you can enable link
state failover on the same screen of the Preconfiguration console. See Appendix C.
Technology Reference , Enabling or Disabling LAN Bypass and Link State Failover on
page C-5 for details.