Cisco Optical Interface Monitoring

The current value is read from the DOM chip on board the SFP (presuming it has DOM support).  This is compared with the threshold table, which is read from the IDPROM of the SFP upon bootup.  The threshold table itself can not be modified 

There are few useful commands:

  • show interface transceiver threshold-table
  • show <int> transceiver detail
  • show interface transceiver supported-list
  • show idprom interface <int>