From: Tony Medeiros (tonygreat@xxxxxxxx)
Date: Tue Aug 22 2000 - 05:01:43 GMT-3
I think this means that you can configure or leave the defualts for
buffers. Each router has 6 storage buffers : small, middle, big, verybig,
large, and huge. These buffer as used for temporary storage of packerts.
The sizes corospond to the different sizes of packets a router my receive or
transmit. Each buffer holds one packet. If you do a "sho buffers" you can
see the stats.
Permanent are the number of buffers that always exist for that size of
packet. Total are the number of permanent + any buffers created on the fly
to make room for that size packet.
Other stats under this screen show how many dynamic buffers are created or
trimmed to accomadate traffic.
Most of this can be adjusted and comes under the "performance tuneing"
perview. Cisco generally doesn't reccomend messing with these values.
Although, I have heard of the need to do this on a 7500 using an RSP4 with
FIDDI interfaces.
Hope this helpsl
Tony Medeiros
----- Original Message -----
From: "Matt Lachberg 3" <Cisco@datastreet.com>
To: <ccielab@groupstudy.com>
Sent: Tuesday, August 22, 2000 12:21 PM
Subject: In English
> Can anyone put this in English:
>
> Fixed minimum buffer limits preclude the possibility of buffer starvation
> where high priority traffic consumes all available switch buffers, leading
> to the possibility of head-of-line blocking.
>
> Matthew Lachberg, CCNP, CCDP, MCSE
>
>
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