topic SD -WAN Tunnel Being Down and Up Frequently in Prisma SD-WAN Discussions

SD -WAN Tunnel Being Down and Up Frequently

Fariq_Zaidi — Mon, 28 Aug 2023 07:01:28 GMT

Hi Support,

I need some advise on this SD-WAN tunnel being down and up frequently. How to troubleshoot and potential cause on it.

It was suddenly happen without any changes has been done on firewall.

Model: PA-820

Version: 10.1.6-h6

I attach the system logs that showing repeated interface and tunnel down message.

Please assist.

Re: SD -WAN Tunnel Being Down and Up Frequently

PavelK — Mon, 04 Sep 2023 23:57:23 GMT

Hello @Fariq_Zaidi

thanks for posting.

From the screen shot of the system log you provided, there is a path monitoring failure/recovery for default route along with log that SD-WAN tunnel is going down/up. My first suspect would be a link / ISP issue. If you have any monitoring tool to check health of links I would correlate it against time stamps of the logs to see you can pin point the issue.

Kind Regards

Pavel