How to place a trigger in order to detect problems with CRC

[palomides]

To explain my project ...
I must place triggers on graphs:
I have HP-ProCurve Switch 2626/2824, which goes back to me the following errors:

"Excessive CRC / alignment error on port (1-26)"
"Excessive Broadcast ..."

The template allows me to obtain figures on ifInOctets / ifOutOctets / etc ... via template-Hp Procurve.

Thank you for your attention

Palo