We currently have several remote sites that connect back to our core (7206vxr) via p2p t1's. One Site connects back to us via MetroE. All Sites are setup under 1 vrf. The sites that have t1's can ping each other with no problem even bumping the datagram size up to over 1000. The problem I'm running into is with the MetroE site. If I try and ping it or ping from the site and bump the datagram size up to 250 or higher the success rate goes down to about 30%. This in turn seems to be causing some issues with our clients. Any advice on this would be great. The setup is all the interfaces that connect to the remote sites are in the same vrf. We then run EIGRP and route the subnets needed and everything works great besides a few applications that seem to be related to something with the MetroE,MPLS, and MTU size, I just not sure where to start.
Thanks in Advance