We got an issue when doing the reliability test for FDR CA ports, i.e. reset the ports of a Channel Adapter, which are all connected with a same IB switch SX6018.
After a couple of times reset, a port is always link down state. we try to plug out and plug in the cables, power on and power off the CA card, both are helpless.
Unless we connected the two ports with one cable on the same CA cards, both ports are linkup.