Network Monitoring tools

[alopresti]

Does anyone know of a network monitoring tool that will report on interface/port errors??

(ex. On catalyst 6500, issue 'show port counters' will output algn errors, collions, etc... or on 7200 router, issue 'show int' will return input errors, CRC etc.)

Is there any tool that will report and alert on these specific errors/collisions??

[lwahlers]

Anything that can read SNMP should be able to get the job done.

I read a multitude of data rate/errors/crc/....using MRTG.

For manual labour, try 'snmpwalk' & 'snmpget' from a linux box.

Make sure you have MIB's installed, available from Cisco Online.