[c-nsp] IP precedence inside of a service policy

[Tantsura, Jeff]

Take a look at
http://www.cisco.com/en/US/partner/products/sw/iosswrel/ps1829/products_
feature_guide09186a00801a2c39.html

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Temkin, David
Sent: Wednesday, August 25, 2004 3:51 AM
To: Glen Turner
Cc: cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] IP precedence inside of a service policy

Hmm... My only issue is that there is no "input" interface as it's
locally generated (via xconnect) l2tpv3 traffic.  That would work great
for normal stuff though...

> -----Original Message-----
> From: Glen Turner [mailto:glen.turner at aarnet.edu.au]
> Sent: Tuesday, August 24, 2004 8:20 PM
> To: Temkin, David
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] IP precedence inside of a service policy
>
> On Wed, 2004-08-25 at 04:05, Temkin, David wrote:
> > This may sound silly, but if I'm applying the IP precedence
> inside of
> > a service policy but have a default class, how does it get
> applied. 
> > Let's say I have:
> >
> > !
> > policy-map test
> >   class test
> >    set ip precedence 5
> >   class test1
> >    bandwidth 10000
> >   class class-default
> >    fair-queue
> >    random-detect
>
> I too have pondered this. My conclusion is that service policies are
> not recursive, so only one "class" clause is executed per packet.
>
> However, you are allowed to have two service policies -- one on input
> and one on output. So to re-work your example:
>
>   class-map CS5
>    match ip dscp cs5
>
>   policy-map IN
>    class TEST
>     set ip dscp cs5
>    class class-default
>     set ip dscp default
>
>   policy-map OUT
>    class CS5
>     bandwidth 10000
>    class class-default
>     fair-queue
>     random-detect
>
> I'm open to correction, as Cisco's documentation is rather poor, but
> this seems to fit the DiffServ QoS model that the Modular QoS is
> trying to implement.
>
> --
> Glen Turner         Tel: (08) 8303 3936 or +61 8 8303 3936
> Australian Academic & Research Network   www.aarnet.edu.au
>
>
>

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