Hello community!
I have been struggling with a situation getting AutoVPN to work properly after several attempts with help from Meraki Support who doesn't seem to have the solution.
We have an MX67, and MC67C. The MC67C is at a remote warehouse location (branch). The only option available for internet out there is AT&T 4G, which is I why I went with the cellular model. As least that part I got right 🙂
After setting up AutoVPN, I still can not figure out why there is no upstream data. I will try and explain the setup and steps taken:
HUB subnet is 172.16.0.0/24 (VLAN5)
Corporate network, everything works as expected.
I can ping any device at the branch location
BRANCH subnet is 172.16.100.0/24 (VLAN100)
4GLTE is configured with custom APN. This was set up to alleviate the restricted NAT type.
Internet and internal connectivity works as expected
PC's are unable to reach anything over the VPN so they can not log into the domain
If I send a ping from the branch to the hub and capture the packets, it looks to me like the ping is reaching the target, being sent back, but NOT being received?
69 4.942286 172.16.100.14 172.16.0.204 ICMP 60 Echo (ping) request id=0x0001, seq=9/2304, ttl=127 (no response found!)
I've checked firewall rules, added extra rules to allow traffic, dug though setup documents, contacted support, added static routes, source based static routes... nothing seems to help.
Does anyone have an idea of what I might have missed? Where else I could check?