[Dale Carder]

Since you are saying layer 2, I interpret that to mean you are seeing Ethernet II frames with a bad CRC being dropped.

That should be the case on FABRIC’s (or any) ethernet switches with a store and forward architecture.  Note they should confirm to IEEE 802.3 section 3.4 “The contents of invalid MAC frames shall not be passed to the LLC or MAC Control sublayers” meaning those frames would be dropped and not forwarded.   This could open up an interesting research question for you, how would a new FCS scheme coexist or be incrementally deployed in a backwards-compatible manner?

Interestingly, the transponders FABRIC uses on its optical network do not process ethernet frames at the traditional LLC or MAC layer in this manner and as such they should happily and blindly forward corrupted frames.

• This reply was modified 2 years, 3 months ago by Dale Carder. Reason: poor grammar attributed to insufficient caffeination

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