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failover router/switch with 2 PoFs (point of failures)?
I am trying to configure my network to have no single points of failure.
I am looking to implement a clustered firewall, however I am given one internet cable and one private network cable by my ISP where I host our current single firewall.
I have been thinking of how I can split each cable into 2 (2 internet cables, one to each firewalls WAN port and 2 private network cables, one to each firewalls LAN port)
I have thought of setting up 2 Cisco switches in a failover config (I believe this is possible but have never done before..) then plug one WAN and one LAN port from each firewall into separate switches.
However I am stuck with the fact that I am given 1 cable for the internet side and one cable for the private network side and hence can only plug these into one of the switches so I lose my redundancy in the case of switch failure.
Has anyone been in my situation before? any other solutions that I am missing?
Well if you really want to eliminate the single points of failure you should have a second internet connection with a different ISP. Ideally also using a different medium (like a cable modem backing up a DSL or T1 line).
Otherwise having your firewalls in an active/passive configuration will take most of the complication out of sending the one internet connection to both devices since only one would ever be active.
If you do get an second internet connection remember that you then have to make any services that you host (mail, web, ftp, minecraft, etc.) fail over to a different address if the first one dies. That's fairly simple with a decent DNS provider.
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SonicWALL Firewall WAN Failover
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