[j-nsp] 40GbE channel-speed auto negotiation behavior

[Jonathan Call]

I installed multiple QSFP+-40G-SR4 modules into a QFX5100-24Q.  Port 5 changed to "break out" mode (i.e. xe-0/0/5:0, 1, 2, 3 instead of et-0/0/5) I tried swapping out QSFP modules and the problem persisted with just that port. I had to manually disable auto negotiation (set chassis fpc 0 pic 0 port 5 channel-speed disable-auto-speed-detection) before the port would operate in 40GbE mode. After I was able to get link I rolled back the change and it remained a 40GbE link.


Anyone had that happen to them before? Should I bother JTAC with it?