I have a switch that has high rxTotalDrops. I've cleared counters for the port and the counters quickly grows. In the course of day the counter climbs into them millions. There are no other errors and none of the other switches show a high count. We are using VTP but are not blocking any VLANs. We are not using syslog either. We are looking at the counters telneted into the switch.
The rxTotalDrops counter includes a sum of the following counters:
* The number of bad packets because of a CRC error.
* A coding violation or sequence error.
* The number of Color Blocking Logic (CBL) blocking drops.
* The number of instances of invalid encapsulation.
* The number of broadcast suppression drops.
* The number of drops because the packet length is less than 64 or greater than 1518 bytes.
CBL refers to the spanning-tree state of a particular VLAN (color) on the port in question. If the port is in a spanning-tree blocking state for a particular VLAN, it is normal to drop packets received on that port for that VLAN.
I suspect these are CBL blocks ... Does anything above match your setup ?
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