Traffic prioritization is enforced on which ports?

Haruki E.Jun 26, 2026

The answer is D, egress ports. Traffic prioritization, meaning the actual scheduling and queuing that decides which frames leave first under congestion, is enforced as traffic exits an interface, not as it arrives. Ingress handles classification and marking, which tells the switch what priority a frame carries, but the enforcement mechanism, the point where a high-priority queue actually gets serviced ahead of a low-priority queue, lives on the egress side. Think of it this way: you can classify all you want on the way in, but nothing gets prioritized until something is waiting to go out and the scheduler has to pick which frame leaves next. On Brocade gear you can confirm queue assignments and scheduling on a port with show qos interface, and the output will show you egress queue depth and servicing statistics, not ingress ones, because that is where enforcement happens.

Yusuf A.Jun 21, 2026

The answer is D, Egress ports. My senior explained it this way: prioritization only matters at the point where frames are waiting to get out, and that is the egress side. The ingress port just receives frames as they come in, so there is no queue to manage there. It is at the egress port where multiple flows compete for the same outbound bandwidth, so that is where the switch applies the priority logic and decides which frames leave first. Think of it like a highway on-ramp versus the main lanes, you control the order of traffic where things actually merge and could back up, not at the entrance.

Samuel O.Jun 26, 2026

Caught myself second-guessing this one, but egress is where shaping actually happens, not ingress.

Nina C.Jun 26, 2026

So from what I have been reading, the switch shapes and schedules frames as they are going out, not coming in, which is why I keep landing on egress ports as the answer. Can someone explain why ingress would not work here, like is it because the switch does not have enough information about congestion at the point traffic arrives?

Dervla O.Jun 14, 2026

Saw a question worded almost identically on my sit, and the stem gave it away the second time I read it: prioritization is about controlling what goes OUT, not what comes in, so you eliminate A and B fast because those are port-type distractors, then you eliminate C because ingress is where you classify and mark, not where you enforce. D stands alone. Egress is where queues form and scheduling kicks in, which is exactly where enforcement has to live.

Hiroshi T.Jun 6, 2026

The vendor documentation is clear that QoS traffic prioritization is enforced at egress ports, so D is correct. C is the classic trap because people assume prioritization is set when traffic arrives, but the actual enforcement happens on the way out, which is exactly what the blueprint language specifies.

Mateus R.Jun 26, 2026

Traffic gets shaped on the way OUT, right, so why would ingress matter here?

Brenda K.Jun 17, 2026

Egress ports, D, took me 8 seconds, flagged nothing, moved on clean.