Hello guys I have a cisco 1721 router configured with a frame relay for a T1 service, the problem is sometimes de upload speed of my T1 drops to almost 10kb. and stays like that, the hwic serial interface gets hot. the ping for the router from the WAN is ok, My ISP says fromtheir side everything is ok.
what do you think it could be... could it be the serial interface or the fast ethernet interface??.
Hope you guys could help.