From: Michael Zuo (mzuo@ixiacom.com)
Date: Mon Oct 30 2006 - 05:22:42 ART
If I am not mistaken :). "shape" only can be used for out, not in.
Brian, quick question: can "police"/MQC do 100% of what "rate-limit"
does?
thanks
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Skinner, Stephen
Sent: Thursday, October 26, 2006 11:20 AM
To: Brian McGahan; ccielab@groupstudy.com
Subject: RE: Clarification of QOS commands and what they do .
Brian ,
Thank you again ,
Stephen Skinner
-----Original Message-----
From: Brian McGahan [mailto:bmcgahan@internetworkexpert.com]
Sent: 26 October 2006 17:37
To: Skinner, Stephen; ccielab@groupstudy.com
Subject: RE: Clarification of QOS commands and what they do .
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Stephen,
See inline.
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
> Skinner, Stephen
> Sent: Thursday, October 26, 2006 10:27 AM
> To: ccielab@groupstudy.com
> Subject: Clarification of QOS commands and what they do .
>
> Guys
>
> Can someone clarify this for me .
>
> These are the 5 Major commands used in QOS and my explanations for
them .
>
>
> RATE-LIMIT - Old NON-MQC version of police .IN and OUT , cant use
policy
> maps , uses ACL to match traffic
Yes.
> POLICE - In and Out , uses MQC , can use policy-maps ,
Must use policy-maps.
> SHAPE , reserves bandwidth for class and buffers excess, uses MQC
Shaping does not reserve traffic, it simply smoothes it out to the
specified
rate.
> PRIORITY, Gives priority access to the hardware buffer for a certain
> amount of traffic , drops excess. Uses MQC
Excess is only dropped if there is congestion. Otherwise excess is just
not
guaranteed low latency.
> BANDWIDTH - allocates fixed amount of guaranteed bandwidth , best
effort
> for
> excess traffic ( excess gets put with everyone else, or dropped) uses
MQC.
Yes.
> I know these are Rough answers , but to me they are pretty much the
> difference between the commands .
>
> Please feel free to expand on them .
>
>
> Many thanks in advance
>
> Stephen Skinner
>
>
>
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