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VPN and Frame-Relay Problems

HI, I configured the 1751 with Frame-Relay and VPN, it is OK, but when I try the Terminal-service conection doesnt work. when I install the router Back-to-Back the terminal-service works !

Any tips ?

TIA

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New Member

Re: VPN and Frame-Relay Problems

This is probably going to be an MTU issue. Terminal Services/ Citrix will set the DF bit in an IP packet. The MTU through your IPSec tunnel is smaller than on the normal LAN. If the packets are over the MTU for the tunnel your router won't be able to fragment them and will drop those packets. You can use the "crypto ipsec df-bit clear" command to clear the df-bit as the packet enters your tunnel. There are other ways to accomplish your goal, but that's the easiest I know.

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