From: Carlos G Mendioroz (tron@huapi.ba.ar)
Date: Thu May 27 2004 - 06:33:40 GMT-3
I see more of a difference from the fact that you are using 100
max-reserve-bandwith in the second option, than from setting or not the
10% in class default.
This is one case where a "should I modify max-reserve-bandwitdth?"
question to the proctor would not hurt (IMHO). Setting
max-reserve-bandwith to 100 does not sound good to me...
Kenneth Wygand wrote:
> Hey Brian,
>
> I see... FTP traffic can basically get more than 90% of traffic with my first configuration during congestion while other traffic would be guaranteed the other 10% of traffic during periods of congestion.
>
> My real uncertainty lies in the "class-default". Does system-generated traffic (routing processes, etc) fall into this class or would that traffic potentially starve if all remaining bandwidth (to fill up 100%) was guaranteed in the class-default (of course this could only be done by changing the "max-reserve-bandwidth" value to 100%).
>
> TIA,
> Ken
>
> -----Original Message-----
> From: Brian McGahan [mailto:bmcgahan@internetworkexpert.com]
> Sent: Thu 5/27/2004 1:08 AM
> To: Kenneth Wygand; ccielab@groupstudy.com
> Cc:
> Subject: RE: bandwidth-percent in class-default
>
>
>
> Ken,
>
> Yes there is a difference. In the first configuration non FTP
> traffic is not guaranteed bandwidth in the case of congestion. In the
> second configuration, non FTP traffic is guaranteed 10% of the output
> queue in the case of congestion.
>
> 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
> > Kenneth Wygand
> > Sent: Wednesday, May 26, 2004 10:04 PM
> > To: ccielab@groupstudy.com
> > Subject: bandwidth-percent in class-default
> >
> > Is there a difference between the results of the following
> configurations?
> >
> > My requirement is to reserve 90% of the interface bandwidth for FTP
> and
> > 10% for everything else. Note the explicit "bandwidth-percent"
> > configuration command under the "class-default" my policy-map.
> >
> > <snip>
> > OPTION 1:
> > class ftp
> > match protocol ftp
> > policy-map 90forFTP
> > class ftp
> > bandwidth-percent 90
> > interface s0
> > max-reserve-bandwidth 90
> > service-policy 90forFTP
> >
> > OPTION 2:
> > class ftp
> > match protocol ftp
> > policy-map 90forFTP
> > class ftp
> > bandwidth-percent 90
> > class class-default
> > bandwidth-percent 10
> > interface s0
> > max-reserve-bandwidth 100
> > service-policy 90forFTP
> > </snip>
> >
> > Thanks in advance,
> > Ken
> >
> >
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-- Carlos G Mendioroz <tron@huapi.ba.ar> LW7 EQI Argentina
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