Which of the following protocol standards is led by Huawei to solve the PFC head-resistance problem?

Which of the following protocol standards is led by Huawei to solve the PFC head-resistance problem?
A . IEEE 802.1AB
B . IEEE P802.1CQ
C . IEEE 802.1Qcp
D . IEEE P802.1Qcz

View Answer

Answer: D

Explanation:

Resolution: • ECN was originally defined in RFC3168 and is used to define network congestion identity. PFC is defined in 802.1Qbb, similar to IEEE 802.3x Pause flow control mechanism, but supports independent operation based on each priority, precise control, so that different priorities do not affect each other. 802.1Q has been evolving, 802.1Qcz (CI, Congestion Isolation) is a newly defined protocol standard led by Huawei to solve the problem of PFC Head of Line Blocking (HOLB).