From: M S (michaelgstout@hotmail.com)
Date: Thu Jan 11 2007 - 21:01:11 ART
Hello:
Here is an attempt at this question:
Question How does adaptive shaping interface congestion work?
adaptive shaping slows the interface speed from the CIR down to the cir
by reducing the interface speed by 12% - 25%. each TC if becns are
received. The interface speed will slowly increase to CIR if no becns are
received for 200 ms up to 16 intervals. ( different documents provide
different values)
adaptive shaping interface congestion appears to be a more more
responsive type of adaptive shaping. When the interface becomes
congested, meaning when the hold queue becomes full, the pvc slams the
cir down to the min cir immediatly. When the hold queus have availble
space, the pvc allows the interface to transmit at the full cir. This
causes packets to be dropped directly at the pvc rather than at the frame
switch or at the remote site.
So, it seems like adaptive shaping interface congestion is a better
protocl, based on the information i was able to find.
As far as what the different commands do, try sh frame pvc or sho traffic
http://www.cisco.com/warp/public/125/traffic_shaping_6151.html
http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/hwan_c/ch05/h_afrts.htm
--------------------------------------------------------------------
From: <ccie_sp@hotmail.com>
Reply-To: <ccie_sp@hotmail.com>
To: <ccielab@groupstudy.com>
Subject: Frame-relay traffic shaping
Date: Wed, 10 Jan 2007 20:05:02 +0000
Hi All,
I'm having problem in understanding a key thing in frame-relay
adaptive
traffic shaping.If I have to do adaptive shaping,
What's the difference between:interface serial0 encapsulation
frame-relay
frame-relay traffic-shaping frame-relay interface-dlci 200 class
adjust_vc_class_rate!map-class frame-relay
adjust_vc_class_rate frame-relay
cir 64000 frame-relay mincir 32000 frame-relay adaptive-shaping
interface-congestion 10
AND
interface serial0 encapsulation frame-relay frame-relay
traffic-shaping
frame-relay class juniperrulez frame-relay map ip 1.1.1.2 602
broadcast
frame-relay map ip 1.1.1.3 603 broadcast!map-class frame-relay
juniperrulez
frame-relay cir 64000 frame-relay mincir 32000 frame-relay
adaptive-shaping
interface-congestion 10
Is the only difference that in the 1st exmplme adaptive shaping is
applied
only for the "602" dlci and the in second example adaptive shaping is
applied
to all dlci's on the multipoint interface?
And what is the difference between ADAPTIVE shaping and normal
traffic
shaping?
What does the interface-confestion doing exactly?
Thanks thanks thanks
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