So you're saying, make sure Flow Control is enabled on the ports? On Mon, Nov 7, 2016 at 8:22 AM, Josh Reynolds <[email protected]> wrote:
> Microbursts causing buffer drops on egress ports to non-10G capable > destinations. The switch wants to send data at a rate faster than the 1G > devices can take it in, so it has to buffer it's data on those ports. > Eventually those buffers fill up, and it taildrops traffic. TCP flow > control takes over and eventually slows the transfer rate by reducing > window size. It doesn't matter if its only sending 100M of data, its the > RATE that it is sending the data. > > On Nov 7, 2016 8:58 AM, "TJ Trout" <[email protected]> wrote: > >> I have a 10G switch that is switching everything of mine at my NOC, >> including peers, router wan, router lan, uplink to tower, etc >> >> During peak traffic periods ~2gbps I'm seeing 1% packet loss and >> throughput will drop to 0 for just a second and resume normal for a few >> minutes before dropping back to zero for just a second. doesn't seem to be >> affecting the wan side of my router which connects to peers through the >> same switch. Doesn't happen during the day with low periods of traffic. >> >> I've enabled / disabled STP, Flow control. >> >> I believe I've isolated it to not be a single port, possibly have a bad >> switch but that seems hard to believe... >> >> Port isn't flapping, getting small amounts of fcs errors on receive and >> lots of length errors but i think those shouldn't be a problem? >> >> It's an IBM G8124 10G switch >> >> Ideas? >> >> _______________________________________________ >> Wireless mailing list >> [email protected] >> http://lists.wispa.org/mailman/listinfo/wireless >> >> > _______________________________________________ > Wireless mailing list > [email protected] > http://lists.wispa.org/mailman/listinfo/wireless > >
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