From: akyccie (akyccie@gmail.com)
Date: Wed Aug 06 2008 - 05:19:32 ART
yes, I would suggest to configure and see the output you will came to know the
difference.
----- Original Message -----
From: Rich Collins
To: akyccie
Cc: Scott Strobeck ; Hobbs ; Ahsan Mohiuddin ; Cisco certification
Sent: Wednesday, August 06, 2008 12:40 AM
Subject: Re: Shaping/Queuing Confusion
That wording "throughput" does get confusing.
I did a quick search on the Cisco web site and found the exact same
wording:
http://www.cisco.com/en/US/docs/ios/12_2/qos/command/reference/qrfcmd9.pdf
Page: QR-240
.....
Examples The following example sets the uses average rate shaping to ensure
a bandwidth of 256 kbps:
shape average 256000
The following example uses peak rate shaping to ensure a bandwidth of 300
kbps but allow throughput
up to 512 kbps if enough bandwidth is available on the interface:
bandwidth 300
shape peak 512000
....
-Rich
On Tue, Aug 5, 2008 at 1:02 PM, akyccie <akyccie@gmail.com> wrote:
But the question specially asked "throughput up to the peak of 512" so it
means you have define the "shape peak" otherwise it can go beyound 512kbps.
----- Original Message ----- From: "Scott Strobeck" <scott@strobeck.net>
To: "Hobbs" <deadheadblues@gmail.com>
Cc: "Ahsan Mohiuddin" <ahsan.mohiuddin@gmail.com>; "Cisco certification"
<ccielab@groupstudy.com>
Sent: Tuesday, August 05, 2008 9:39 PM
Subject: Re: Shaping/Queuing Confusion
I think you almost nailed it, Hobbs. The way I read it is that the
Prec4 class doesn't require shaping. I think this would do it:
policy-map policy
class fa0/0
bandwidth 128
shape average 256000
class prec4
bandwidth 384
The bandwidth statement is a minimum guarantee, but will allow the
traffic to go up to the full bandwidth, if it is available.
Scott
Hobbs wrote:
I did it like this and it works:
policy-map policy
class fa0/0
bandwidth 128
shape average 256000
class prec4
bandwidth 384
shape peak 512000
Does that satisfy the requirements?
Not sure why you are using nested policies...
On Tue, Aug 5, 2008 at 3:09 AM, Ahsan Mohiuddin
<ahsan.mohiuddin@gmail.com> wrote:
Dear Experts,
I am confused what would be the solution to below requirements.
Please
help!
Define two classes of service besides the default.
Class Fa0/0 matches all the traffic coming from input interface
fa0/0.
Class IP-Prec matches all the traffic with an IP Precedence of 4.
Class Fa0/0 is ensured a bandwidth of 128 Kbps and the output is
shaped to
256 Kbps.
Class IP-Prec is ensured a bandwidth of 384 Kbps. But if enough
bandwidth
is available, the class can obtain the throughput up to the peak of
512
Kbps
I tried the following configuration but when I apply it to interface,
I get
*"GTS : Can be enabled only at the first level"*
Class Map match-all Fa0/0 (id 1)
Match input-interface FastEthernet0/0
Class Map match-all IP-Prec (id 2)
Match ip precedence 4
Policy Map Fa0/0
Class Fa0/0
Traffic Shaping
Average Rate Traffic Shaping
CIR 256000 (bps) Max. Buffers Limit 1000 (Packets)
Policy Map IP-Prec
Class IP-Prec
Traffic Shaping
Peak Rate Traffic Shaping
CIR 512000 (bps) Max. Buffers Limit 1000 (Packets)
Policy Map SHAPE
Class Fa0/0
Bandwidth 128 (kbps) Max Threshold 64 (packets)
service-policy Fa0/0
Class IP-Prec
Bandwidth 384 (kbps) Max Threshold 64 (packets)
service-policy IP-Prec
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