Hopefully someone has seen this before, over the past few weeks some of our VPN users have been experiencing disconnects\reconnects during their VPN session. They will be working for an hour or two and the connection will drop then reconnect out of the blue. There hasn't been anything out of the ordinary when this behavior has happened, if fact I have seen where my connection has been on for 16 hours without a drop then the next day I connect and will have a drop an hour into my session. Also, these drops are not happening to all users at the same time. Today while testing, I connected my laptop to the VPN going over my wireless and my desktop to the VPN with a wired connection to my router at the same time. I had a drop on my laptop but didn't get any drops on my desktop.
I have gone through what Cisco has posted in their Troubleshooting AnyConnect docs and added the following to my ASA for our VPN Group policy:
webvpn
anyconnect ssl dtls none
anyconnect mtu 1200
anyconnect ssl keepalive 300
anyconnect dpd-interval client 45
anyconnect dpd-interval gateway 45
anyconnect ssl compression none
I also went and added the following to just my profile for the VPN:
webvpn
anyconnect ssl keepalive 20
anyconnect ssl compression none
anyconnect dtls compression lzs
anyconnect ssl dtls enable
anyconnect mtu 1200
anyconnect ask none default anyconnect
anyconnect dpd-interval client 5
anyconnect dpd-interval gateway 5
We have also tried using our backup internet line instead of our Primary for the VPN and are still seeing the same results. I am at a loss as to what to try next as I don't feel it is a problem with our ASA nor is it a problem with our internet connection and am hopeful that someone on here might have seen something like this.
Our ASA is:
ASA5512, 4096 MB RAM, CPU Clarkdale 2792 MHz, 1 CPU (2 cores)
ASA Version 9.4(1)
AnyConnect Version 3.1.08009
We were seeing this problem also before I updated the Anyconnect client and the ASA OS version so I don't believe that is the problem either.
Any help would be appreciated.
Thanks
