It is better for you to use 15.44 until the 17.7 gets more time to be tested from the other users.  Both firmware 16.16 and 17.6 are not stable firmware even for the other Models like MX450 or MX84. We had last month a lot of problems with 16.16 which included: VPN interruption, High Resource Utilization, packet loss and high latency (and for specific MX model throughput degradation too). So, my suggestion would be to keep your devices running on 15.44 Firmware.  ... View more

Does this new firmware fix the problems that MX 16.16 already have (High device utilization and vpn interruption)? We already had in our production MX16.16 and we were suggested to downgrade to MX15.44.  ... View more

Firmware 16.16 still present a lot of issues to Meraki Appliances (mostly on the MX450 and MX100). Until now we have defined three main problems: - High Device Utilization. - NBAR blocking traffic because of Layer 7 Firewall rules. - Instability on the VPN connectivity (Meraki Auto VPN Site to Site and the VPNs created when MX is used as Wireless Concentrator). There are a lot of packet loss and high latency for the traffic that is going through VPN. Solution that has been tested until now is to downgrade to 15.44 which is the most stable firmware for the Security Appliances (Up to 15-25% reduce of Device Utilization, no packet loss and high latency through the VPN). ... View more

A lot of problems with NBAR, Layer 7 Firewalls. They should find a way to fix it and not to ask for feedback after confirming this firmware as a stable release. ... View more

Meraki MX 16.16 has still a lot of bugs. This Firmware has changed a lot the way how the NBAR categorize the traffic.  We are facing problems with traffic being denied by Layer 7 Firewall Rules, which was allowed on the previous firmware. I have open a case to support and they confirmed that there are problems with it but they do not provide any solution. Should we start now to change the configuration of each network one by one in order to fix the problem with MX 16.16? ... View more