From: gladston@br.ibm.com
Date: Fri Aug 13 2004 - 17:30:48 GMT-3
Any example of using ECN between 3 routes?
I could not make a logical map of how it works reading Cisco Doc.
If R1 sends a packet marked with ECT and CE, then would R2 learn that R1 is ECN capable and would consider this information when sending packets back to R1?
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from Cisco
If the number of packets in the queue is between the minimum threshold and the maximum threshold, one of the following three scenarios can occur:
If the ECN field on the packet indicates that the endpoints are ECN-capable and the WRED algorithm determines that the packet should have been dropped based on the drop probabilitythe ECT and CE bits for the packet are changed to 1, and the packet is transmitted. This happens because ECN is enabled and the packet gets marked instead of dropped.
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If R2 receives a packet from R1 with ECN field saying that it is a ECN capable, which device R2 considers ECN capable, the routers that sends this packet or the device to which this packet will be send?
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