PIX behaviour when another network firewall fails

PIX is sitting on the network external perimeter. and to it the "OUTSIDE" interface to internet, "DMZ" to DMZ, "inside" to the astaro device "outside astaro" interface.

on the "inside" the servers see the "inside astaro" interface.

On pix i defined routes for servers vlan that point to the outside interface of the astaro.
On pix i defined nat (inside, outside) to let any requests for VPN and email public IP address be routed to astaro outside.

The astaro inside interface is on the same subnet as my servers.

In case the astaro machine went offline, will PIX be able to redirect traffic even if the ACLs, the routing and the Natting use the astaro two interfaces. Will PIX act like the ACLs, routes and natting defined for astaro interfaces do not exist or will it fail.

A bit complex.. In case you need clarification please do ask.
Junior-AuditorAsked:
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Ernie BeekExpertCommented:
It will fail. You set up the pix to forward/route/nat to specific ranges. If those are unreachable (astaro down) there will be no connectivity.
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Junior-AuditorAuthor Commented:
Too brief to fully understand... but i got the idea and figured the rest myself
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Ernie BeekExpertCommented:
Sorry about that :-~
Sometimes I forget to elaborate when for me it's quite clear. Glad you figured it out though.
Thx for the points :)
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