Howdy!
I've got a Celestica SeaStone DX010 running SONiC, which is working well with a couple QSFP+ 40gbe AOCs and ConnectX-3 adapters. I've picked up a few ConnectX-4 adapters (HP 840QSFP28, CX455A) and three different brands of DACs - but I can't get a link to come up at 100gbe. If I hard-code the switch side to 40gbe, it comes up with the CX4 card and a QSFP28 DAC, but if I try to do 100gbe, the link goes down and I don't see any indication of why it won't come up.
I've flashed the current Mellanox stock firmware to the card without issues, but still won't come up at 100gbe.
If I plug the DAC into two ports on the switch, they loop up at 100gbe. If I connect two NICs together with the DAC, they also both come up at 100gbe. It's just the NIC-to-switch connection that won't come up.
Any tips/tricks?
Thanks!
I've got a Celestica SeaStone DX010 running SONiC, which is working well with a couple QSFP+ 40gbe AOCs and ConnectX-3 adapters. I've picked up a few ConnectX-4 adapters (HP 840QSFP28, CX455A) and three different brands of DACs - but I can't get a link to come up at 100gbe. If I hard-code the switch side to 40gbe, it comes up with the CX4 card and a QSFP28 DAC, but if I try to do 100gbe, the link goes down and I don't see any indication of why it won't come up.
I've flashed the current Mellanox stock firmware to the card without issues, but still won't come up at 100gbe.
If I plug the DAC into two ports on the switch, they loop up at 100gbe. If I connect two NICs together with the DAC, they also both come up at 100gbe. It's just the NIC-to-switch connection that won't come up.
Any tips/tricks?
Thanks!