we have a problem with several Cisco 3825 and a VWIC-2MFT-E1DI module installed.When yoe connect 2 E1 links (channeled) on the interface there is an increasing number of CRC errors and also a loss of pings.
After installing 2 moduls and putting the lines on each of the 2 interfaces everything works fine.
On some routers it works fine with one interface.
Any ideas what could cause this problem?
Also I heard about a "bad" range of serial numbers of the chassis!?