From: Mike Kraus \(mikraus\) (mikraus@cisco.com)
Date: Tue Jul 03 2007 - 01:21:32 ART
Scott Morris had once made mention that the whole token bucket metaphor
was induced by mind-expanding agents, and I am learning to agree. :)
If I ignore the whole bucket concept:
1) Shape Average: Within each Tc the router sends Bc worth of data, and
buffers the rest for the next Tc.
2) Shape Peak: Within each Tc the router sends up to Bc+Be of data, (if
all the Bc was not used in previous Tcs) and buffers the rest for the
next Tc.
3) Police: As Bc is exceeded, packets are dropped.
4) Police Peak: As Bc exceeded, managed discard is used up till Be.
After Be, packets are dropped.
By no means is the above all explicitly accurate, but it is a broad
generalization that has kept me sane. If anyone has any
suggestions/comments on the above, I would love to hear it!
Here are a couple good pages I've found useful:
http://www.cisco.com/en/US/tech/tk543/tk545/technologies_tech_note09186a
00800a3a25.shtml
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/q
os_c/qcpart4/qcpolts.htm
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
darth router
Sent: Monday, July 02, 2007 9:23 PM
To: ccielab@groupstudy.com
Subject: Shape/Police Peak
Ok guys,
I know this has probably been beaten to death by now, but I have been
twisting my brain around it for days. Reading and reading, and I think I
am finally starting to grasp the concept.
When you police peak, you can only take tokens out of one bucket per
interval, correct? If CIR is not enough, you jump to the Tp bucket,
which creates the exceed action, righto?
With shape peak, you can transmit from both buckets per interval?
DR
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