How do I have redundant ports on one Router plugged into Failover ASA's

I have FAILOVER ASA's but only one router on the INSIDE. I wish to plug in another interface on the Router into the backup ASA. But what is the best way to do this.
JerveyAsked:
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Sniper98GConnect With a Mentor Commented:
Redundant ASA's should be connected using a switch not a router. Depending on the router you are using you may be able to configure its interfaces as switched ports to save your installing an additional device.
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JerveyAuthor Commented:
Do you know how I would do this . The router is a 3845 running -ipbase-mz.124.7.bin?"???
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egyptcoConnect With a Mentor Commented:
do sh module or sh inventory and if you have one of these
HWIC-4ESW
HWIC-D-9ESW
HWIC-4ESW-POE
HWIC-D-9-ESW-POE

than you have shitch module on your router.
if not i'm affraid you need either buy switch module or a decent switch.
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