Anyconnect MTU change during file transfer

[samarthashetty]

Hello All,

One of our Any connect VPN user is having slow file transfer ( 400 kbps)  during a copy and when tried with other VPN ( not Any connect ) there is no issue and transfer happens at 4 Mbps

Any connect is reinstalled and so is complete machine is replaced. We see as DTLS is not used however there are few other users with no DTLS and they are having no issue.

One thing i observe is MTU reduces during file transfer ( 1390 to 1335) . Could this be the issue?

FP 2k series with 9.12(3)12 

AC 4.9.05042

Regards

Sam

[MHM Cisco World]

https://community.cisco.com/t5/vpn/anyconnect-client-reconnects-after-1-minute/td-p/2217458

[rschlayer]

You should definitely get DTLS to work which will drastically improve speed.