One of my customer is having problem on transferring dat over the GRE tunnel. He has GRE tunnel to the other site on 100 MB fibre from the service provider with EIGRP routing protocol. When he is downloading file from one site to other site, he gets 260kbps download speed. I have changed the MTU size to 1400 and adjusted mss to 1320 and increased the bandwidth 25MB on the tunnel interface but no luck on the download speed. Is there any other thing I can do to get more download speed over the tunnel? I will apreciate any help on this.