From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Thu Jan 25 2007 - 12:23:48 ART
It ultimately depends on how strict the provider's policing is.
If they police you 1000 times per second versus 10 times per second the
former will allow you to burst less while the latter will allow you to
burst more. Over a long term average you will never exceed the policed
rate either way. The reason you shape outbound is typically to either
avoid the provider's policing or to avoid bandwidth overage charges.
HTH,
Brian McGahan, CCIE #8593 (R&S/SP)
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
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-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Stefan Grey
Sent: Thursday, January 25, 2007 4:00 AM
To: ccielab@groupstudy.com
Subject: Is there any sense in traffic shaping??
Hello guys!
I just thought about this and still can't define for myself the answer
on
this.
Imagine folowing situation:
router1-router2. You have got for example a frame-relay link with
defined
cir. Router1 is the edge router of your company.. you configure the
shaping
to 128k on the outgoing interface. Router2- is the edge router of the
provider closest to you... he configures policing 128k on the incomping
interface.... So shaping is needed to smooth the transmission and reduce
the
number of tcp resets. So if there is some excess packet my router would
permit it to go out of the interface but the provider router would just
drop
it. Is it what is excess burst agreement for??
Thanks.
This archive was generated by hypermail 2.1.4 : Thu Feb 08 2007 - 23:46:57 ART