Site-to-Site VPN from MX64 to Non-Meraki (SonicWALL TZ) stops passing traffic
I have several MX64-Non-Meraki (SonicWALL TZ205w and TZ300) VPNs. Generally, all of them work without issue. However, for no apparent reason, some of them will stop passing traffic. If I look at the SonicWALL, it says the tunnel is online, but it isn't. Once I renegotiate the tunnel, the VPN starts passing traffic again within seconds. The other weird thing is that it doesn't drop all the tunnels between the devices. I thought we were getting false positives, as I could ping the site from my workstation VLAN, but I then found that I couldn't do so from my server VLAN.