From: Pavel Bykov (slidersv@gmail.com)
Date: Wed Nov 26 2008 - 01:23:19 ARST
:) Only sometimes they don't. Beware of generalization.
SHAPING is not possible in inbound direction.
QUEUING is possible in inbound direction. "hold-queue in" command changes
the parameters in routers on the most basic level. It is a queue where
packets wait to be processed by CPU in case of congestion. In switches,
there can be multiple input queues per port, where packets wait for arbitrer
to grant them access to switch fabric. For example, you can place packets in
different input queues based on their cos/dscp.
On Wed, Nov 26, 2008 at 3:56 AM, Jason Madsen <madsen.jason@gmail.com>wrote:
> eww yikes...I can't believe I wrote that. yes, queuing is OUTBOUND
> only! sorry Mark.
>
> Jason
>
>
> On Tue, Nov 25, 2008 at 7:53 PM, Pavel Bykov <slidersv@gmail.com> wrote:
>
>> correction: Shaping does queuing only OUTBOUND. It is not possible to
>> shape on inbound.
>> Also a note, policers do not work outbound everywhere - it is platform/ios
>> dependent.
>>
>>
>> On Wed, Nov 26, 2008 at 3:43 AM, Jason Madsen <madsen.jason@gmail.com>wrote:
>>
>>> hopefully others will add-to once they read your posting especially if I
>>> missed anything.
>>>
>>> where will you be testing? I take mine at RTP this coming February. I
>>> can
>>> probably use the extra time, but I want to go test really badly. The
>>> wait
>>> is starting to get to me.
>>>
>>> Jason
>>>
>>> On Tue, Nov 25, 2008 at 7:31 PM, <mark.chandra@gmail.com> wrote:
>>>
>>> > Jason,
>>> >
>>> > Thank you very much, you have good explanation. Qos is my weak area
>>> also,
>>> > and multicast is the weakest :)
>>> >
>>> > Once again, thx a lot
>>> > ------Original Message------
>>> > From: Jason Madsen
>>> > To: Mark Stephanus Chandra
>>> > Cc: ccielab@groupstudy.com
>>> > Sent: Nov 26, 2008 08:14
>>> > Subject: Re: Different Between Rate-limit and traffic shape
>>> >
>>> > (again I'm no QoS expert (yet), but from what I believe to be true:)
>>> >
>>> > Yes, rate-limit is policing. It's the legacy way of doing it and It
>>> does
>>> > NOT queue / buffer...just limit the traffic rate. Unlike queuing, you
>>> can
>>> > do it inbound or outbound. Traffic Shaping, however, does queuing aka
>>> only
>>> > inbound.
>>> >
>>> > HTH a little
>>> >
>>> > Jason
>>> >
>>> >
>>> >
>>> >
>>> >
>>> > On Tue, Nov 25, 2008 at 6:05 PM, Mark Stephanus Chandra <
>>> > mark.chandra@gmail.com <mailto:mark.chandra@gmail.com> > wrote:
>>> > Guys.
>>> >
>>> >
>>> >
>>> > One more thing, what is the difference between rate-limit and
>>> > traffic-shape
>>> > on an interface ?
>>> >
>>> >
>>> >
>>> > Is rate-limit treat traffic like policing the traffic and
>>> traffic-shape
>>> > like
>>> > shaping the traffic with buffer ?
>>> >
>>> >
>>> >
>>> > Thanks a lot guys, my lab date is on two weeks, very nervous about it.
>>> >
>>> >
>>> >
>>> > Regards
>>> >
>>> >
>>> >
>>> > Mark Stephanus Chandra
>>> > IT Consultant
>>> >
>>> >
>>> > Blogs and organic groups at http://www.ccie.net <http://www.ccie.net>
>>> >
>>> >
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>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
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>>>
>>>
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>>
>>
>> --
>> Pavel Bykov
>> ----------------
>> Don't forget to help stopping the braindumps, use of which reduces value
>> of your certifications. Sign the petition at
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>>
>
>
-- Pavel Bykov ---------------- Don't forget to help stopping the braindumps, use of which reduces value of your certifications. Sign the petition at http://www.stopbraindumps.com/Blogs and organic groups at http://www.ccie.net
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