AhnLab TrusGuard - Page 73

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Chapter3 Installation 73
Active-Standby Bridge Mode
 You can set this mode regardless of the type of upper/lower switch (L2, L3).
 The upper/lower switch must be
in the same sub-network.
 STP
must be used in upper/lower router/switch.
 The su
b-network host uses the upper router/switch’s IP address as the gateway.
 Do not set
the HA interface as route bridge is selected among the HA peers by STP.
Active-Active Router Mode
 L3 switch is needed as the upper switch.
 Both L2 and L3 switches can be used as the bottom switch.
 The su
b-network uses VIP1 or VIP2, or the IP address of the bottom switch as the gateway.
 All the HA peers use the upper router’s
IP address as the gateway.
 The
gateway that connects the upper router/switch to the bottom uses equal-cost multi-path
routing by setting the VIP3 and VIP4 equally.