Cisco Anyconnect VPN Stability on RT-AC68U

[jeff3820]

If both CTF and FA were active with NAT acceleration it was probably the flow acceleration (FA). FA was so flaky and unstable for me I enabled traffic statistics and rebooted to only have CTF. Now perfectly stable. No issues with Anyconnect for me with this setup on my 68U. Any chance of getting a setting to just disable FA?

 

[cybrnook]

If both CTF and FA were active with NAT acceleration it was probably the flow acceleration (FA). FA was so flaky and unstable for me I enabled traffic statistics and rebooted to only have CTF. Now perfectly stable. No issues with Anyconnect for me with this setup on my 68U. Any chance of getting a setting to just disable FA?

If you are using the AC68 (as am I), then Johns fork of the older release supports settings Level 1 CTF on the Nat accel option, which is just CTF:

"In Asus's particular case (since it's the one I'm most familiar with - someone else could fill us up on the other manufacturers), they are handling this as a "Hardware acceleration level". Level 1 is just traditional CTF. Level 2 is traditional CTF + FA. One coming product that does support both levels will have to downgrade from Level 2 to Level 1 when one of the new features they are adding will be enabled."

https://www.snbforums.com/threads/broadcoms-hardware-acceleration.18144/

 

[woodyca]

With NAT acceleration disabled, I still encounter "VPN Reconnecting ..." ---- at a loss and will probably just deal with it until the cost of mesh networking HW comes down and switch over to a different manufacturer. I also connect with WiFi through other houses and hotels and I never have the issue. Refuse to pay for a $250 router twice.

 

[West]

I used to have a similar issue as my work requires Cisco anyconnect vpn. My setup has changed since then but my fix was clearing nvram, so I would advise to update to .65 if supported and then clear nvram or 30/30/30 method after upgrade firmware.

 

[Wolfclaw]

I use Anyconnect with an 87U and latest Merlin firmware and "touch wood" have never had a disconnect, even when using it for a full working day.

I do a nvram clear after each firmware upgrade and reboot the router every night when house asleep, which may help.

 

[woodyca]

Back to update all on the outcome. Finally gave up on the AC-87R (after 5 RMAs) and tested the AC-3100. No issues whatsoever and life is good with the AC-3100. Must have been a hardware issue with that model, or something that I don't about anymore.

The AC-3100 works like a charm out of the box.

 

[p3matty]

Having this issue on my wife's work computer which connects via VPN. I recently purchased two t mobile 1900s and did the trick to turn them into ac68u units - and running them as an aimesh deal. Seems to only affect her wirelessly - as wired is fine. Will try some of the things mentioned here and other places I've found, but have any new tricks or ideas been discovered?

 

[jeff3820]

Try turning off (disable) airtime fairness under the wireless professional tab. Some connections really don't like this setting.