Maybe you didn't save your running configuration and whatever settings on those ports wasn't applied.Wondering if I could pick the brains of all of you.
I previously had the qsfp port working with a breakout cable to a few hosts. I moved my setup and powered everything back on, but the ports won't come up. Tried rebooting both the hosts and switches.
The front 10gbs are fine using the same branded cables but single DACs to the same NICs.
Any ideas?
You didn't insert the cables all the way. Try another port.
If you have a QSFP+ to QSFP+ cable, connect the cable to both broken out ports to see if it gets a link. Check using something like
show interface description
.