I have a MSFC -> FWSM(A/S FO) -> ACE(FO) design using 2 security contexts, with the ACE modules in bridged mode. I notice the servers on the server side VLAN(501) on the ACE module sometimes show up on the client side VLAN(500), when I do a show arp on the ACE module. This causes the ACE probe to fail. To fix the problem I clear the arp table on the FWSM and the ACE module. The servers use the FWSM as the default gateway.
I have assigned VLAN's on the MSFC as below, and placed the servers into VLAN 501:
svclc module 7 vlan-group 1,2
svclc vlan-group 1 500
svclc vlan-group 2 96,501
svclc vlan-group 3 89,90
svclc vlan-group 5 70,71,94,95
firewall module 2 vlan-group 1,3,5