RE: frame-relay minCIR purpose ?

From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Wed Jun 13 2007 - 13:50:48 ART


        minCIR is traditionally used for adaptive shaping with BECN,
FECN, and Foresight. For example when BECN adapt is enabled and you
receive a BECN from the Frame Relay network the shaping algorithm will
incrementally slow down your sending rate either until BECNs stop being
received or you reach the minCIR. Adaptive shaping to interface
congestion is a relatively new feature, but uses the same concept. When
the output queue length exceeds the configured value the shaper will
back off either until the queue length drops below the configured value
or you reach the minCIR, whichever comes first.

HTH,

Brian McGahan, CCIE #8593 (R&S/SP)
bmcgahan@internetworkexpert.com

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-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
johngibson1541@yahoo.com
Sent: Wednesday, June 13, 2007 11:23 AM
To: ccielab@groupstudy.com
Subject: frame-relay minCIR purpose ?

I know this will slow down the shaping rate when
adaptive-shaping interface-congestion [queue depth]
is reached.

But in one sentence, minCIR's purpose is to maintain
discrimination on packets by letting them dropped
in the shaping 4 queues rather than dropping
at the single software queue. Right?



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