[c-nsp] Constant output drops on etherchannel

[Dan Letkeman]

So is there any way to increase the buffers without causing more
damage?  Or is this a hardware limitation?


On Fri, Jan 14, 2011 at 3:54 PM, Gert Doering <gert at greenie.muc.de> wrote:
> Hi,
>
> On Fri, Jan 14, 2011 at 12:28:03PM -0600, Dan Letkeman wrote:
>> 3560 or 3560G.
>
> Lame switches with too-small buffers.
>
> [..]
>> I do have auto qos enabled for some of the phones I have connected to
>> the switches, but I don't have any qos on the etherchannel trunks.
>
> Turning *off* qos will reduce the amount of drops you see (what qos does
> is "take tiny buffers, spread over 4 different queues, and all of a
> sudden your traffic only has 1/4th the buffer space available").
>
> Alternatively, you could fiddle with qos to give all buffers to
> a single queue, and put all traffic in that queue, but that's
> effectively turning it off...
>
> gert
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> Gert Doering - Munich, Germany                             gert at greenie.muc.de
> fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
>