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Site-to-Site VPN from MX64 to Non-Meraki (SonicWALL TZ) stops passing traffic

Getting noticed

Site-to-Site VPN from MX64 to Non-Meraki (SonicWALL TZ) stops passing traffic

Greetings,

 

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.

 

Any ideas on what is causing this?

 

Thanks,

 

Jeremy

2 REPLIES 2
Kind of a big deal

Re: Site-to-Site VPN from MX64 to Non-Meraki (SonicWALL TZ) stops passing traffic

See if the SonicWall has an option to enable dead peer detection and/or keepalives. 

Getting noticed

Re: Site-to-Site VPN from MX64 to Non-Meraki (SonicWALL TZ) stops passing traffic

They do and they are all enabled.

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