How to connect Cisco Anyconnect when using VPN on the router (double vpn)

Sometimes you may experience that after turning on the VPN function on your GL.iNET router, your company laptop with Cisco Anyconnect cannot connect.

You can change your laptop MTU in this situation.

If you are Window users, you can go to Control Panel>Network Connection>Config



Select Jumbo Packet and choose any value from the pull-down menu.


The following is a verified method.

First, open a command window.

Then find out the correct network interface

netsh interface ipv4 show subinterfaces

The replace the following command with the correct network interface to change the mtu lower.

netsh interface ipv4 set subinterface <subinterface name> mtu=1280 store=persistent