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Voip with multiwan failover

Wondering if Sophos can deal with this issue.

 

I had and had to make a custom script for my pfSense firewall. I was in a situation where you have multi-wan with cloud voip phones.  In the event that the primary wan went down and the phones disconnect they would switch to the secondary connection perfectly.  The problem is when the primary came back up the phones would still hold a connection via the secondary but because of routing the phones would also try to make a connection via the primary resulting in the phones ringing but unable to hear the other party.  The only way to resolve this was to kill all the states on the voice network/vlan still connected via the secondary when the primary would come back up allowing the phones to make a proper connection only via the primary ISP connection.  I would have to do this manually until I was able to create a script for the pfsense firewall. Does the sophos have a mechanism for dealing with this scenario?



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  • Hi  

    With the gateway failover feature of the XG, the default behavior is when the primary connection is restored and the gateway is up again, without the administrator’s intervention, traffic is again routed through the primary (active) gateway. In other words, the secondary (backup) gateway fails back on the primary (active) gateway (See Gateway Failback section).

    I would advise testing this feature and failing over first, to confirm the call behavior/experience is as expected for your cloud VoIP phones.

    Best,

  • The question is when failing back to primary does the firewall close all active states connected via the secondary or backup gateway?  If the sessions are left active then the phones will not work.  I dont have a firewall yet to test with as I am really trying to find if this will be a solution I can deploy.  Then I will purchase.

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  • The question is when failing back to primary does the firewall close all active states connected via the secondary or backup gateway?  If the sessions are left active then the phones will not work.  I dont have a firewall yet to test with as I am really trying to find if this will be a solution I can deploy.  Then I will purchase.

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