Here is the scenario. I have two ASA 5510's in Active/Standby. Each of them has a single uplink to one of two routers (HSRP1 and HSRP2) configured in HSRP. Disaster strikes and the interface between the Active ASA 5510 and HSRP1 goes down.
Will traffic get through a standby firewall if the active firewall's interface to the gateway goes down?
UPDATE: the topology shown above will not work correctly. You MUST have a broadcast domain (VLAN or dedicated switch) shared by HSRP1, HSRP2 and both firewalls for it to work correctly. Otherwise you will get asymmetric routing and other oddities because the HSRP routers can't communicate hello packets properly. Do yourself a favor and use a VLAN or dedicated switch between the firewalls and routers.