[c-nsp] to tweek SPD or not to tweek SPD
lee.e.rian at census.gov
lee.e.rian at census.gov
Wed Dec 17 13:22:22 EST 2008
"Jose Conceicao" <conceicao.jose at gmail.com> wrote on 12/11/2008 06:14:02
AM:
> Hi
>
> Under what conditions would it be deemed wise to tweek SPD or disable it
> altogether?
Since noboby else seems to want to touch this.. I wouldn't disable SPD
since it allows extra input buffering for things like routing packets that
you really don't want to be dropped (eg. eigrp).
As far as I know, you only need to tweak SPD on things like 6500s that
don't automagically adjust the thresholds for you. In my tests,
increasing the input queue size on all interfaces on a real router (eg.
7200) automatically changed the SPD thresholds. Changing the input queue
size on all interfaces on a 6500 didn't change a thing w/ SPD - I had to
manually set the thresholds.
Regards,
Lee
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