troubleshooting Question

Juniper VPN tunnels flapping up and down after firmware upgrade

Avatar of Greggor25
Greggor25 asked on
NetworkingNetwork ManagementNetwork Security
9 Comments2 Solutions1128 ViewsLast Modified:
Experts,

We recently upgraded our branch office SRX650  firmware from 10.2.3 to 10.4.3 a couple of weeks ago.  Afterwards we've seen VPN tunnels flap up and down on LAN side.  During which the WAN side never goes down.  Funny thing is when you login into one of the SRX220 you do show interfaces terse the LAN side shows up/up.

We have site to site VPN tunnels from our branch SRX650s to field SRX220s.  

I've tried rebooting the SRX220's, lowering tcp-mss and ipsec-vpn from 1300 to 1360 but to no avail.  My SRX650 CPU utilization is low.  The monitoring software I'm using to monitor the tunnels test time has been upped to test less frequent to no avail.

We have plenty of other VPN tunnels on the SRX650 that aren't flapping. I'm kind of lost and need some help.
ASKER CERTIFIED SOLUTION
Join our community to see this answer!
Unlock 2 Answers and 9 Comments.
Start Free Trial
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 2 Answers and 9 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros