Monitoring CRC errors

Certain interface counters, such as those for CRC errors, may not be available by means of SNMP OIDs. In this case it is recommended that either RMON or CLI be used to monitor those statistics.

The following synchronizes the statistics maintained for the interface and RMON, as well as ensures proper reporting from an operational standpoint.

Issue the clear counters all command in global configuration mode.
```
device# clear counters all
```
Issue the clear counters rmon command.
```
device# clear counters rmon
```

Execute the rmon collection stats command on each interface, as in the following example.

device(config)# interface ethernet 0/1
device(conf-if-eth-0/1)# rmon collection stats 2 owner admin

Use an appropriate RMON MIB for additional monitoring.
For example, to obtain CRC statistics on a Extreme SLX-OS platform, the following RMON MIB could be used: Object-etherStatsCRCAlignErrors, OID- .1.3.6.1.2.1.16.1.1.1.8