We have some strange behaviour at the moment on our remote servers connected using mpls vpn. When I try and ssh to a centos servers it takes up to 1 minute to get a login prompt. If I ping the server there is no reply for sometimes 30 seconds to a minutes and then replies start happening. It looks like a kind of idle disconnect happening? Does anyone know if this could be anything to do with mpls? or could be just coincidence that this is happening on just our remotes sites using mpls.