You are asked to set up an IP fabric that supports AI or ML workloads. You have chosen to use lossless Ethernet. In this scenario, which statement is correct about congestion management?
A.
The switch experiencing the congestion notifies the source device.
B.
Only the source and destination devices need ECN enabled.
C.
ECN marks packets based on WRED settings.
D.
ECN is negotiated only among the switches that make up the IP fabric for each queue.
From the same reference as "MichelT" suggestion, but the correct should be "C" based on this wording
"ECN-enabled devices determine the queue congestion state based on the WRED packet drop profile configuration applied to the queue, so each ECN-enabled queue must also have a WRED drop profile. "
and the component that notify source is "Receiver", based on this wording
" Receiver echoes the congestion notification to the sender."
See https://www.juniper.net/documentation/us/en/software/junos/traffic-mgmt-qfx/cos/topics/concept/cos-qfx-series-explicit-congestion-notification-understanding.html
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Kornrono
2 weeks, 3 days agoMichelT
1 month, 2 weeks ago