AhnLab TrusGuard - Page 72

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72 AhnLab TrusGuard Installation Guide
(O: Required, +: Optional).
HA Mode Operation
Mode
HA Sync
Interface
HA
Interface
OSPF/RIP STP L2 Switch L3 Switch
Active-
Standby
Router O O O +
Bridge O O O +
Active-
Active
Router O O O +
Bridge O O O O
Active-Standby Router Mode
 The sub-network uses the master's virtual IP address, VIP2, as the gateway.
 All the HA peers use the upper router’s
IP address as the gateway.
 The
routing gateway from top to bottom uses the master’s virtual IP address, VIP3.
 You can set this mode regardle
ss of the type of upper/lower switch (L2, L3).
 All rou
ting goes through the master's virtual IP address: VIP1 and VIP3.
 If a problem
occurs in the master, the slave informs the upper/lower device that it has brought over
VIP1 and VIP3 through ARP.