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RE: QOS Groups posted 07/11/2003
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Jonathan,

	Correct.  The class INPUT would be applied to any interfaces
which connect to customers of the "gold" class.

Brian McGahan, CCIE #8593
Director of Design and Implementation
brian@xxxxxxxxxxxxxxx

CyscoExpert Corporation
Internetwork Consulting & Training
Toll Free: 866.CyscoXP
Fax: 847.674.2625


> -----Original Message-----
> From: Jonathan V Hays [mailto:jhays@xxxxxxxx]
> Sent: Thursday, July 10, 2003 6:45 PM
> To: ccielab@xxxxxxxxxxxxxx
> Cc: 'Brian McGahan'; 'Jim Phillipo'
> Subject: RE: QOS Groups
> 
> Brian,
> 
> One thing that is slightly confusing is the name of policy-map INPUT
in
> your example. Although one easily infers that policy-map OUTPUT is
> applied to the single upstream connection, you don't state exactly
where
> the INPUT policy-map is applied. And there are two inputs.
> 
> I guess common sense tells us that policy-map INPUT is applied to the
> connection from customer "Gold", correct?  Maybe INPUT-GOLD would have
> been a better name.
> 
> Thanks,
> 
> Jonathan
> 
> > -----Original Message-----
> > From: nobody@xxxxxxxxxxxxxx [mailto:nobody@xxxxxxxxxxxxxx] On
> > Behalf Of Brian McGahan
> > Sent: Wednesday, July 09, 2003 6:22 PM
> > To: 'Jim Phillipo'; ccielab@xxxxxxxxxxxxxx
> > Subject: RE: QOS Groups
> >
> >
> > Jim,
> >
> > 	It does not get propagated to the rest of the network.  The
> > point of the QoS group is that you can create a logical grouping of
> > traffic, apply a policy to this grouping, and not affect any other
> > devices in the network.
> >
> > 	Suppose that a router has 3 connections, one to customer
> > "Bronze", one to customer "Gold", and one connection
> > upstream.  Traffic
> > from customer Gold going upstream should be treated
> > preferentially over
> > traffic from customer Bronze.  As the traffic from Gold comes
> > in, we can
> > mark it with QoS group 1.  As traffic in QoS group 1 goes upstream,
we
> > can apply whatever policy we want.
> >
> > 	Take the following config example:
> >
> > policy-map INPUT
> >   class class-default
> >    set qos-group 1
> > !
> > class-map match-all GOLD
> >   match qos-group 1
> > !
> > policy-map OUTPUT
> >   class GOLD
> >    bandwidth percent 50
> >
> >
> >
> > 	As traffic comes in the input interface, it is marked with
> > qos-group 1.  Class-map GOLD specifies all traffic in qos-group 1.
As
> > traffic goes to the output interface, all traffic of qos-group 1 is
> > guaranteed 50% of the output queue.
> >
> >
> > HTH,
> >
> > Brian McGahan, CCIE #8593
> > Director of Design and Implementation
> > brian@xxxxxxxxxxxxxxx
> >
> > CyscoExpert Corporation
> > Internetwork Consulting & Training
> > Toll Free: 866.CyscoXP
> > Fax: 847.674.2625