From: imam@intikom.co.id
Date: Thu Mar 02 2006 - 23:40:27 GMT-3
Hi lewis
what do you mean MQC Shaping ? becuase MQC base frame-relay traffic
shaping already available also in 12.2 ... is this you mean
http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide09186a0080110bc6.html
rgds
Imam R
"Chris Lewis" <chrlewiscsco@gmail.com>
Sent by: nobody@groupstudy.com
02/28/2006 08:19 AM
Please respond to "Chris Lewis"
To: sameer.azam@gmail.com
cc: ccielab@groupstudy.com
Subject: Re: QoS / CBWFQ Question
Think about it like this.
Bandwidth allocation only happens when there is congestion. On a physical
interface, you know you will get congestion if you send more data that the
interface speed. However, how will you get congestion on a sub-interface?
What defines what level of traffic on a sub interface will generate
congestion? If you do nothing to put a limit on the amount of traffic a
sub
interface can transmit at, the router does not know when there is too much
traffic and therefore does not know when to start building queues, the
first
necessary step in allocating bandwidth.
So knowinbg you need to limit the amount of traffic for the sub interface,
there are two options, policing and shaping. Policing will not help you,
as
no queues are built, traffic is dropped. So you need to shape the traffic
to
a rate (which can be a percentrage rate)
Once you have a shaped policy on a sub interface, you can nest a child
policy to allocate bandwidth, as the parent is providing the upper limit.
You do not need to use frame relay traffic shaping to do this, you can use
can use MQC shaping.
Chris
On 2/27/06, sameer.azam@gmail.com <sameer.azam@gmail.com> wrote:
>
> Hi,
> With the following information given only; how would you divide the
> bandwith on the subinterface basis.
> Second the interface is Frame-Relay interface, so is it necessary to
> enable the Frame Relay Traffic Shapping or we can simply use the CBWFQ
like
> we use on any serial inteface?
>
>
> Question:
> R1 Serial interface has two sub-interface.
> Apply QoS to corresponding sub-interfaces.
> Apply QoS according to the following info.
> Subinterface ip address and bandwidth to be allocated are as follows:
> A. 0/0.1 : 192.168.1.0/24 bandwidth 10%
> B. 0/0.1 : 192.168.1.0/24 bandwidth 20%
> C.Critical Voice traffic bandwidth 50%
>
> Regards
>
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