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biverb0910
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Posts: 2
Joined: Sun Nov 07, 2021 3:43 pm

Problem. l2tp session with ipsec is terminated in 1-2 min.

Sun Nov 07, 2021 4:36 pm

Dear friends please help me to solve next problem.

I have:

L2tp server - CCR1016-12G
115 ipip tunnels and 150 l2tp tunnels + ipsec
Firmware 6.48.5
CPU 34%, free memory 75%.

Everyday, I have to restart some of l2tp clients because their l2tp session terminated every 1 or 2 minutes. Log from one of such client is in attach. After restarting, client works correct 20-24 hours and then problem repeats. Each day l2tp clients with such problem are different.

I find out that when total number of l2tp tunnels with ipsec less then 85 - no such problem at all.
Or ipsec is off on all clients. Also no problem.
For example I can use 115 ipip tunnels, 84 l2tp+ipsec and 80 l2tp without ipsec tunnels and such problem doesn’t happen.

What is wrong with ipsec? Why such limitation?
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