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LAN LAGG (NON LACP) Active/Back-up Stops working after 5mins. I have to unplug one of the links for it to start working again.

LAN LAGG (NON LACP) Active/Back-up Stops working after 5mins. I have to unplug one of the links for it to start working again.

Until i unplug one of the links, can't ping the XG, get online and the SOPHOS Wifi stops working..... Basically the LAN LAGG isn't accessible. 

A bit of a back story....

We've just installed a new Core switch, this new switch doesn't support Dynamic LAGG (LACP).

On our old Core switch, we had the XG connected via LACP (802.3ad) all was well.

I've had to switch from LACP on the XG to Active/Back-up. Static LAGG is configured on the new CORE. Initially it works fine but just stops working. Unplugging any of the two links restores connectivity. Both the links also work fine independently and if only one is connected it remains stable.

Plug them both in, fine for 5 mins or so, then nothing.........

Any ideas? 

XG430 (SFOS 19.5.0 GA-Build197)



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  • Hi,

    You say you have configured "Static LAGG is configured on the new CORE" but your XG does Active/Backup, you cannot do this, Active/Backup is for when you have no LAGG. Configure your switch with normal individual ports or setup the XG with static LAGG.

    I bet this is coursing your troubles.

    Bart van der Horst


    Sophos XG v18(.5) / v19 Certified Architect
    https://www.bpaz.nl

Reply
  • Hi,

    You say you have configured "Static LAGG is configured on the new CORE" but your XG does Active/Backup, you cannot do this, Active/Backup is for when you have no LAGG. Configure your switch with normal individual ports or setup the XG with static LAGG.

    I bet this is coursing your troubles.

    Bart van der Horst


    Sophos XG v18(.5) / v19 Certified Architect
    https://www.bpaz.nl

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