A common cause of this error is a duplicate IP address.  Perhaps try changing its IP address. ... View more

Looks like it will happen 🙂 Products - Cloud Management for Catalyst FAQ - Cisco ... View more

It looks like the remote end is killing your session because the MX has stopped sending keepalives.  Or perhaps these keepalives are no longer making it across.  If it is a direct link then I would assume the MX stops sending them due to some other issue. I believe a support case is in order here. ... View more