From: alsontra@hotmail.com
Date: Tue Mar 09 2004 - 19:46:24 GMT-3
Brian,
What are your reason for not using shaping? Are you basing your decision
upon the requirement that server not violate the 256k limit? Just curious.
Thanks,
Alsontra
----- Original Message -----
From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
To: "'Edwards, Andrew M'" <andrew.m.edwards@boeing.com>;
<alsontra@hotmail.com>; "'Marvin Greenlee'" <marvingreenlee@yahoo.com>;
"'Ahmed Mustafa'" <ahmed.mustafa@sbcglobal.net>
Cc: <ccielab@groupstudy.com>
Sent: Tuesday, March 09, 2004 12:14 PM
Subject: RE: QOS for real scenerio
> This of course is assuming that the application itself supports RSVP
> reservations. Configuring RSVP in your network is really only part of the
> end to end RSVP process. You're basically telling the network to get
ready
> in case someone wants to reserve bandwidth. The application must then
come
> in and say, hey I need X amount of bandwidth now, and the network will
> comply.
>
> From the listed requirement it would seem that something like the
> following configuration would be more appropriate:
>
> policy-map GUARANTEED
> class QOS
> bandwidth 256
> police cir 256000
>
> This will guarantee 256Kbps of the output queue for class QOS when
> there is congestion, but will also police the rate that class QOS attempts
> to leave the queue to 256Kbps.
>
>
> HTH,
>
> Brian McGahan, CCIE #8593
> bmcgahan@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987 x 705
> Outside US: 775-826-4344 x 705
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Edwards, Andrew M
> Sent: Tuesday, March 09, 2004 8:54 AM
> To: alsontra@hotmail.com; Marvin Greenlee; Ahmed Mustafa
> Cc: ccielab@groupstudy.com
> Subject: RE: QOS for real scenerio
>
> Shaping, in my mind, would be the better choice. Of course, if you have
a
> specific bandwidth requirement that MUST be ensured, I would go with RSVP.
>
> That way you know the bandwidth is there...
>
> Another option would be custom que lists where you can use bandwidth as a
> consideration for the link. But if its end to end I would use RSVP.
>
> andy
>
> -----Original Message-----
> From: alsontra@hotmail.com [mailto:alsontra@hotmail.com]
> Sent: Tuesday, March 09, 2004 2:10 AM
> To: Marvin Greenlee; Ahmed Mustafa
> Cc: ccielab@groupstudy.com
> Subject: Re: QOS for real scenerio
>
>
> Would you want police or shape? Although policing would keep your servers
> utilization 256k, wouldn't shaping provide you with smoother traffic
> patterns, in addition to less packet loss??? Rookie question, I know. :-)
>
> Alsontra
>
>
>
> ----- Original Message -----
> From: "Marvin Greenlee" <marvingreenlee@yahoo.com>
> To: "Ahmed Mustafa" <ahmed.mustafa@sbcglobal.net>
> Cc: <ccielab@groupstudy.com>
> Sent: Monday, March 08, 2004 11:56 PM
> Subject: Re: QOS for real scenerio
>
>
> > For assigned maximum bandwidth, you can use the police command.
> >
> > Policy-map GURANTEED
> > class QOS
> > police 256000 8000 exceed-action drop
> >
> > Port numbers will give you more granularity for the
> > traffic you are limiting.
> >
> > Assuming that you want the QoS for the link between
> > the server and the clients, you will need to configure
> > it on both sides.
> >
> > Sincerely,
> > Marvin Greenlee
> > Network Learning, Inc
> > Senior Technical Advisor
> >
> > --- Ahmed Mustafa <ahmed.mustafa@sbcglobal.net> wrote:
> > > I am working on a real scenerio where specfically
> > > asked for assigned bandwidth
> > > 256K for ip address 172.16.10.1 (Running as an
> > > application server) regardless
> > > of congestion.
> > >
> > > If I configure CBWFQ where I can assign bandwidth:
> > >
> > > Router (Where Application Server)
> > > ---------------------------------------------------
> > >
> > > access-list 100 permit ip host 172.16.10.1 any
> > >
> > > class-map QOS
> > > match access-group 100
> > >
> > > Policy-map GURANTEED
> > > class QOS
> > > bandwidth 256
> > >
> > > int s0/0:0
> > > service-policy output GURANTEED.
> > >
> > >
> > >
> > > Remote Router (Where hosts are)
> > > ---------------------------------------------------
> > >
> > > access-list 100 permit ip any host 172.16.10.1
> > >
> > > class-map QOS
> > > match access-group 100
> > >
> > > Policy-map GURANTEED
> > > class QOS
> > > bandwidth 256
> > >
> > > int s0/0:0
> > > service-policy output GURANTEED.
> > >
> > >
> > ----------------------------------------------------------------------
> > --
> > >
> > >
> > > The above QOS only occurs incase of congestion.
> > >
> > > What QOS can be configured regardless of
> > > congestion, and always gurantee
> > > bandwidth 256KB only. When I Say 256KB only I mean
> > > it shouldn't exceed 256KB
> > > regardless of bandwidth availble or not.
> > >
> > >
> > > In access-list, will port numbers make any huge
> > > difference. It's an old
> > > application and port# is not known unless we through sniffer.
> > >
> > >
> > > Should QOS configurations apply both ways as I am
> > > mentioning above, or on a
> > > router only where the application server is.
> > >
> > > Thanks
> > >
> > >
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