Arista 7500 Series router
For a transceiver to transmit traffic, it has to linkup on a switch. Even before that it has to be recognized by the switch.
I found several transceivers that work on one switch("port up" recognized) but not another switch("port down" not recognized). My understanding is that this recognition step of switch queries each transceiver for info using I2C. But what info?
How would I know more if a transceiver was not recognized, and for what reason? The transceiver certainly satisfies the transceiver MSA compliance.
Is there a config or setting file in the switch or online that have the checklist, or is this hard-coded? I want to know exactly how does the switch ask for transceiver.
I heard some Arista switch that rejects anything foreign, how would I be sure?