XG230 - High Availability - Unable to connect with peer device

Hi all,

Hoping someone on the community can assist with the set up of HA. We have 2 x XG 230 devices, both have been registered, both have the same firmware. I have followed this article to the letter  -https://community.sophos.com/kb/en-us/123174 to set up HA. When I try to enable HA I receive the error "Unable to connect with peer device".

I logged a call with Sophos support and they confirmed the configuration is correct. The app log showed the error "peer sanity check failed" when trying to enable HA. Sophos support advised to try and use a cross over cable to for the HA port. However, the article above states that a straight through or cross over cable can be used. I can ping between the 2 devices using the straight through cable and I can't believe that the ports on the XG devices would not allow for a straight through cable to be used. Most modern switches and routers are capable of Auto MDI-X.

Does anyone have any suggestions? This is delaying our implementation of our new XG devices as we need both running in sync.

Thanks for any help!

Cheers

Lee