vMX - Tunnel is up but when trying to reach the remote end RTO.
I have 2 tunnels that is up on the VPN Status page but when trying to ping the remote devices on the other tunnel I can't reach it and the remote devices is active and can be pinged by other network devices that has separated tunnel.
I have vMX which I manage and a remote end to Azure GW. When I rebooted the vMX it suddenly works.
I checked the logs nothing came up it just says remote connection is establish yet I can't see any replies from the remote end.
I have the 16.15 last week and I upgraded it to 16.16 because the issue was that all the tunnels is up but can't see any responses from the other end when trying to ping. After the upgrade to 16.16 the issue was resolved then after a week the issue came back but this time it's only one tunnel. Note I only have 2 tunnels for ASA and Azure.
Well, I ran into a few issues during the setup, and here are some of the errors I did and how I corrected them.
1- Azure VPN gateway was set to route-based. I had to delete the VPN gateway and recreate the gateway with the VPN type as Policy-based 1- When configuring the site-to-site VPN on the Meraki dashboard, ensure the private subnets equal the address space configuration for your Azure virtual network.