On Fri, 6 Mar 1998, Danny McPherson wrote:
> >
> > Does anyone know what a very high rate of "output buffers swapped out"
> > on a serial link (E1) means?
> >
> > (Router is a 7507 with FSIP controller and IOS RSP-JSV-M Version 11.2(9))
>
> If I'm not mistaken, if "transmit-buffers backing-store" is enabled on the
> interface and there's insufficient bandwidth to immediately transmit a packet,
> the CPU will copy the packet to System buffers and will increment the "output
> buffer swapped out" counter. Then if sufficient bandwidth exists to transmit
> the packet before system buffers are full, it won't be dropped.
Hmm.. seeing the same problem here with fair-queue enabled. Turned on
backing-store and no help. Turned off fair-queue and swap outs stop.
Which is better: 'no fair-queue' or 'fair-queue' with buffer swaps.
Stb
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