From: Joe Chang (changjoe@earthlink.net)
Date: Sun May 23 2004 - 13:48:22 GMT-3
That's right. The buffer is a queue, the style of which can be specified in
the configuration. But at what point can this buffer be emptied onto the I/O
transmit ring of the interface? I guess there's a lot more to the algorithm
than the texts are letting on.
----- Original Message -----
From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
To: "Joe Chang" <changjoe@earthlink.net>; <ccielab@groupstudy.com>
Sent: Sunday, May 23, 2004 10:33 AM
Subject: RE: Traffic Shaping question
Hi Joe,
Traffic shaping uses a buffer to hold packets that cannot be
transmitted due to lack of Bc or Be credit. This buffer is defined in
legacy FRTS by the "frame-relay holdq" map-class subcommand, and the
"queue-limit" policy-map/class-map subcommand for MQC FRTS.
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987 x 705
Outside US: 775-826-4344 x 705
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Joe Chang
> Sent: Saturday, May 22, 2004 6:35 PM
> To: ccielab@groupstudy.com
> Subject: Traffic Shaping question
>
> QoS is a real popular topic here!
>
> Does anyone know what happens to packets that are queued as a result
of
> being
> rejected by the token bucket algorithm? At what point are these
packets
> forwarded onto the transmit ring? Two streams result from the token
bucket
> function - one that conforms and one that doesn't. How and when can
the
> unconforming stream be sent without defeating the objective of traffic
> shaping
> - keeping the average rate under the CIR?
>
> TIA
>
>
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