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LAN redundancy?

NikolaosBeglitis

Hi,

I understand how to do redundancy/fail over/load balancing on multiple WAN interfaces and I have the UTM successfully doing so between an ADSL and a 4G USB interface. However I am also interested in doing the same, for failover reasons, for the LAN interface. I don't see how it would be possible to do so. Ethernet bridge does not seem to be the thing to do. I had the two Ethernet interfaces bridged together but this created a loop. What I would like is to have two internal interfaces, eth0 and eth1, sharing the same IP, same as a bonding interface, so that if one goes down the other takes over and vice versa. Is this possible? My switch supports all the usual protocols (LACP etc) but this is from the UTM's perspective.

Kind regards,

Nick



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  • 0

    I might be miss understanding your goal here but are you referring to high availability?

     

    community.sophos.com/.../115371

    Respectfully, 

     

    Badrobot

     

  • 0 in reply to Badrobot

    Not exactly HA, HA requires 2 units running Sophos. I have 1 unit with two internal network interfaces. One of the interfaces is not used. The other has the internal IP 192.168.0.1. This is the default gateway for all the machines in the 192.168.0.0/24 network. If something happens to that interface, faulty cable, faulty NIC etc then there is no access to the WAN (Internet in this case). With two network interfaces creating a bond using 192.168.0.1, if one of the two goes down then the other one keeps things going. Does that help? I am looking to do that.

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  • 0 in reply to Badrobot

    Not exactly HA, HA requires 2 units running Sophos. I have 1 unit with two internal network interfaces. One of the interfaces is not used. The other has the internal IP 192.168.0.1. This is the default gateway for all the machines in the 192.168.0.0/24 network. If something happens to that interface, faulty cable, faulty NIC etc then there is no access to the WAN (Internet in this case). With two network interfaces creating a bond using 192.168.0.1, if one of the two goes down then the other one keeps things going. Does that help? I am looking to do that.

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