I have a C3750 running ios 12.2(50)SE1.
The input/output rate counters won't increase (stays at "0" ) on a GLC-LH-SM, while input/output packets increase.
The wired thing is that al GLC-TX shows and increases the counters on the same switch.
It does not matter if it is a routed or switched port. Counters won't increase.
Using a SNMP-Tool like Cacti shows the actual traffic on that interface.....
I guess it is a bug, but didn't find any bug report on this issue searching CCO...
Anybody else having that issue?