Appreciate the great discussion here. Whilst I'd originally planned to replicate https://willette.works/mx-warm-spare/ I'll now change our approach back to the updated method without the direct-connect cable. Cheers all. ... View more

Thanks @PhilipDAth. But would you configure all 4 ports to be in 1 aggregate on the MS stack? I've actually got a direct connection between the 2 MX's as well but have set this to be access with only a non-routable VLAN which has been pruned from the switch uplinks. The issues that you describe are exactly what we've experienced recently so am looking to sort things out. ... View more

@hoempf on this, would the switch ports on the stack be configured in an aggregate? ... View more