North American Network Operators Group|
Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical
Re: TCP congestion
Philip Lavine wrote:
Can someone explain how a TCP conversation could degenerate into congestion av
oidance on a long fat pipe if there is no packet/segment loss or out of order se gments?
Mbps, all of a sudden transmission rates drop to nothing then pickup again afte r 15-20 seconds. Prior to the drop off (based on packet capture) there is usuall y a DUP ACK/SACK coming from the receiver followed by the Retransmits and conges tion avoidence. What is strange is there is nothing prior to the drop off that w ould be an impetus for congestion (no high BW utilization or packet loss).
P1? Mainly are there issues regarding the handling of SACK, DUP ACK's and Fast R etransmits.
ke flawless socket code, but if it is network issue how is caused?
Duplex mismatch on an intermediate ethernet segment?
-- Jay Hennigan - CCIE #7880 - Network Engineering - jay@xxxxxxxxxxx Impulse Internet Service - http://www.impulse.net/ Your local telephone and internet company - 805 884-6323 - WB6RDV