Just finished the topic of congestion avoidance for “Cisco QoS OECG”. I love how the topic consumed like 80 pages and there was only 2 commands I had to know. I wanted to hear some preferences on congestion avoidance. In my opinion, it sounds like W/RED is less tolerant of queues filling than W/RED-ECN. With ECN, the network gives the TCP hosts a chance to lower their own congestion window if supported. With W/RED, the network makes the executive choice to drop packets in queue. Of course need is for obvious reasons.
The first question is….Are there times when one type of congestion avoidance is appropriate over another? I guess this is more of a design-based question. I just wanted to hear some thoughts.
Second question…If TCP hosts do not support ECN, can the network still perform congestion avoidance using just W/RED? Is it practical to give host a chance to reduce their own window first before dropping packets? If the idea of ECN being more tolerant than W/RED, can the hosts be “cut off” after a certain point? I feel like ECN would have to react quicker before W/RED threshold is met if the two can co-exist.
Thanks!
Mike
QoS ? Congestion Avoidance Preference: Just finished the topic of congestion avoidance for? http://goo.gl/fb/92PrC
QoS ? Congestion Avoidance Preference: Just finished the topic of congestion avoidance for? http://goo.gl/fb/92PrC
QoS ? Congestion Avoidance Preference: Just finished the topic of congestion avoidance for? http://goo.gl/fb/92PrC
QoS ? Congestion Avoidance Preference: Just finished the topic of congestion avoidance for? http://goo.gl/fb/92PrC
QoS ? Congestion Avoidance Preference: Just finished the topic of congestion avoidance for? http://goo.gl/fb/92PrC
QoS ? Congestion Avoidance Preference: Just finished the topic of congestion avoidance for? http://goo.gl/fb/92PrC
The thing is that most cable ISPs already do prioritization for some gaming traffic, TCP congestion avoidance also does it
The thing is that most cable ISPs already do prioritization for some gaming traffic, TCP congestion avoidance also does it
The thing is that most cable ISPs already do prioritization for some gaming traffic, TCP congestion avoidance also does it
The thing is that most cable ISPs already do prioritization for some gaming traffic, TCP congestion avoidance also does it