MX was UP, Switches UP, AP's UP  BUT UPLINK was Red and shows Down    Wired issue    I have site to site VPN with another Maraki but i don't think its relevant at all      ... View more

I prefer to monitor my WAN-links with an SNMP-application. For monitoring of Meraki devices I prefer CheckMK which runs out of the Box with Meraki. There is also a free virtual appliance if you don't have that much to monitor. ... View more

@Greenberet seems to have the best answer.  I also found RFC 6598. https://datatracker.ietf.org/doc/html/rfc6598    "This document requests the allocation of an IPv4 /10 address block to be used as Shared Address Space to accommodate the needs of Carrier- Grade NAT (CGN) devices ... The Shared Address Space address range is 100.64.0.0/10."     I'll guess ChromeCast has some kind of internal address, or perhaps even its LAN IP, and is wanting to NAT it into a known address space, so they chose this CGNAT block. ... View more

We have only one WAN ISP connection and Cellarer data  ... View more

That's the way it should work. And if not, you know where to get help ... 😉 ... View more

But one to one, and many to one NAT is not supported by Meraki if its connected to a non Meraki devise. I got confirmation from Cisco Meraki support on that today ... View more

@dlowery Oh its a long story  But its a setup requested by the customer to do this  ... View more

Thank you all  it works perfectly fine ... View more