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MWeng3's avatar
MWeng3
Icon for New Contributor rankNew Contributor
6 years ago

why do I see packets on the user side of the 25G MAC when no fiber is plugged in?

If I have no fiber plugged in to the board QSFP28+, I am getting random packets on the user side of the 25G MAC; avalon_st_rx_startofpacket/endofpacket/data etc. with correct looking avalon_st_rx_err...
Deshi_Intel's avatar
Deshi_Intel
Icon for Regular Contributor rankRegular Contributor
6 years ago
The other thing to confirm is you didn't accidentally turn on 25G internal loop back and drive something from TX user logic side, right ?