Does anyone have experience with the Chelsio T520 series of cards specifically as it relates to transceiver compatibility?

SFP & SFP+:

We have several applications where we could use these well-supported cards, some require use of SFP transceivers (not SFP+) such as 1000BASE-LX transceivers. My understanding is that some cards (such as the Chelsio cards) can receive an SFP transceiver (negotiating down from SFP+) but requires explicit configuration. Does anyone know if said configuration lives in the pfSense (e.g. blown away on reboot).

Aftermarket Transeivers:

Chelsio doesn't make 1000BASE-LX modules, and aftermarket modules appear to be marketed toward a particular brand of switch (Juniper, HP, Cisco, etc.). Can I safely assume that they're largely interperable?

Any help would be greatly appreciated.
-K




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