We have users who use the Meraki Z1 or Z3 at home to VPN in and they connect a Cisco IP phone to the Meraki. When the Meraki drops the internet connection, the Cisco IP phone un-registers from CUCM, when the Meraki comes back to life, the Cisco IP Phone does not reconnect to CUCM and we have to remotely reboot the Meraki from the dashboard for the IP phone to register again.
Does anyone know why this happens?
yeap tunnel comes back up. Option 150 is configured. It's a strange one as we do not see it on all devices.
This sounds like a problem with the upstream CPE that the Z1/Z3 is plugged into. Is their a common CPE in use amongst the users having the problem?
I will bet they have a bug with processing long lived UDP flows. If you take one case- are their any firmware updates available for that users CPE?