Connecting Token Ring networks
On the WinRoute computer go to menu Settings->Advanced->Misc.Options and check on 'Support for Token Ring networks'. Because Token Ring uses frames that are larger than ethernet you may need to enable an option of WinRoute located only in the registry.
Stop the WinRoute engine.
Open up the registry editor. In Windows click on the Start button go to “Run” type in “regedit” click OK
Expand “HKEY Local Machine / Software / kerio / Winroute”
Change the value of the IpFragMode key to “1”
Close the registry editor and restart WinRoute
If this does not work you will need to lower the MTU on each Token Ring enabled PC to 1500.