Question 25
UnclassifiedHow do you reset InfiniBand port error counters?
Correct answer: D
Explanation
InfiniBand port error counters are cleared by resetting the port’s performance counters, which returns the error counts to zero. If both listed methods perform that reset, then “Both A and B” is right because each method achieves the same counter reset.
Why each option is right or wrong
A. ibportstate <lid> <port> reset
B. perfquery -x -R
C. ibclearcounters
D. Both A and B
InfiniBand port error counters are not cleared by a generic device reboot; they are reset when the port’s performance counters are explicitly reset, which returns the accumulated error values to 0. Because both listed actions in A and B perform that same counter-reset operation, the correct choice is the combined option rather than either one alone.