I am having a problem understanding how a packet is going to know that it needs to get evaluated by the IDSM if it is being sent to a host on a different vlan. First lets say that the server is on a vlan that is being pair and the server host is configured with the GW address of the paired vlan. So if a different host on a different vlan sent a packet to that server how does the MSFC know to sent the packet to the paried vlan to get routed to the servers vlan instead of routing it directly to the servers vlan that is attached to it(msfc). FYI. I followed the admin guides to set this up and it does not cover design or operation packet flows.