- Bronze, 100 points or more
one of our customer has three DMR(digital microwave radio) links which shares the same MUX of a 2M Nokia DM2 unit. the bandwidth are set at 128k,256k and 512k respectively.
we found excessive errors on all serial interfaces on 6 2600 routers connected on those 3 links. the interesting finding is only 75% of the bandwith is reported by the routers on all three links.
the DMR engineer suggests there could be a clocking issue between Cisco interface(x21 DTE) and the Nokia MUX.
but the problem didn't seem to happen with Cisco 2500 routers when the customer had a 128k DMR before those 3 links were put in place.
could you please advice what could be the reason?