> On Nov 22, 2016, at 9:32 AM, Tim Durack <tdur...@gmail.com> wrote: > > I have a vendor that does not support SFP DOM SNMP polling. They state this > is due to EEPROM read life cycle. Constant reads will damage the SFP. > > We SNMP poll SFP DOM from Cisco equipment without issue. > > Not heard this one before. Trying to see if there is some validity to the > statement. Thoughts?
It’s entirely possible some people implement it poorly and the read cycles count. With 100k cycles somewhat typical for those bytes, it’s certainly something that could be seen if polling every 5 minutes in 347 days, but I think that’s a datapoint that most SFPs are warranted for much longer than 347 days. As the DDM data is stored not at 0x50 but at 0x51/0x52 in optics this is more likely done with a micro controller presenting the ram backed data via reads to/from those specific bytes. - Jared _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
