I have a setup with 2 ASA 5505's in a HA configuration. There are 2 ISPs so there are 2 WAN links coming into the ASAs. I would like to implement some SIP trunks, but am considering the options for failover in case of a link failure.
What kind of options do I have for this type of setup? How should I setup the WAN ports on the ASA so that it will failover to the second ISP line in case the the first one goes down?
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