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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: TCP congestion
[email protected] wrote on 07/12/2007 02:07:00 PM: > Typical Problem Scenario: Data transmission is humming along > consistently at 2 Mbps, all of a sudden transmission rates drop to > nothing then pickup again after 15-20 seconds. Prior to the drop off > (based on packet capture) there is usually a DUP ACK/SACK coming > from the receiver followed by the Retransmits and congestion > avoidence. What is strange is there is nothing prior to the drop off > that would be an impetus for congestion (no high BW utilization or > packet loss). Perhaps you're filling buffers by flowing from a 1Gbps link into a 9Mbps circuit. Dropped packets induces slow-start/congestion avoidance. Joe
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