Please guys, i seriously need assistance on how my network behaves this days... I have a cisco router 3640 series with NM-1E2W, DM, WIC-1T, etc



Problem i experienced is timed out on the serial interface connecting my router to the service provider... at time i can ping the providers' interface ip connecting to my serial interface while some times it will tell me request timed out but the systems will browse the net but slowly with about 4000ms response from the interface ip address.



Please what could be the problem? is it the interface cards that are not okey or is from the service provider?



Thank you