[j-nsp] Classify packets with BGP community policy

[Guy Davies]

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Hi Alexander,

You've not configured a rewrite rule.  Therefore, your packets should
be going into the correct queue but, when they get to the next hop,
they'll still have the original classification.  I'm assuming, of
course, that this is putting the packets into the relevant queue
(although there's no sign of any queue definitions for
assured-forwarding in your config.

Regards,

Guy

> -----Original Message-----
> From: Alexander Kjellerstedt [mailto:alle at telia.net]
> Sent: Tuesday, April 22, 2003 1:56 PM
> To: 'Josef Buchsteiner'; 'Guy Davies'; juniper-nsp at puck.nether.net
> Subject: SV: [j-nsp] Classify packets with BGP community policy
> 
> 
> Hi!
> 
> Thank you for quick respons!
> I got the following config from the docs, but I must have 
> missed something
> because it does not ovveride the classification.
> 
> 
> show class-of-service
> forwarding-policy {
>     class biz {
>         classification-override {
>             forwarding-class assured-forwarding;
> 
> classifiers {
>     inet-precedence incoming {
>         forwarding-class best-effort {
>             loss-priority low code-points 000;
>             loss-priority high code-points 001;
>         }
>         forwarding-class assured-forwarding {
>             loss-priority low code-points 010;
>             loss-priority high code-points 011;
> 
> interfaces {
>     all {
>         scheduler-map test;
>         unit * {
>             classifiers {
>                 inet-precedence incoming;
> 
> show policy-options
> policy-statement checkcom {
>     from community qppb;
>     then class biz;
> }
> community qppb members 10:300;
> 
> show routing-options
> forwarding-table {
>     export checkcom;
> 
> 
> Regards
> //Alexander
> 
> 
> 
> -----Ursprungligt meddelande-----
> Från: Josef Buchsteiner [mailto:josefb at juniper.net] 
> Skickat: den 15 april 2003 12:08
> Till: Guy Davies; Alexander Kjellerstedt;
> juniper-nsp at puck.nether.net Ämne: RE: [j-nsp] Classify packets with
> BGP community policy
> 
> 
> At 11:58 AM 4/15/2003, Guy Davies wrote:
> >
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> >Hi Josef,
> >
> >I think this would actually be (at least partially) under Policy 
> >Framework, rather than Interfaces and CoS.
> 
> yes... those are the kind of features which have there right on being
> explained in each of them. I just thought the most of them 
> which is not
> obvious is in the interface book and there are pointers in 
> the policy book
> which points you to the interface configuration. I do miss 
> the pointer the
> other way around though. I will ask the doc groups to add a 
> pointer so it
> clears any ambiguities.
> 
> thanks
> Josef
> 
> >  Take a look at 
> >http://www.juniper.net/techpubs/software/junos/junos57/swconf
> ig57-polic
> >y/htm
> >l/policy-framework-config8.html#1017021.  This table defines 
> policy actions
> >including "then class class-name".  The actual definition of 
> class-name
> >would be configured under class-of-service which *is* 
> documented under
> >Interfaces and CoS.  *In addition* to this, you'd need to 
> define a rewrite
> >rule (which is also documented under Interfaces and CoS) so that all
> packets
> >leaving via a particular output queue have the 
> inet-precedence rewritten to
> >a particular value.  If you don't do this, even though the 
> packet is placed
> >in a particular queue and receives particular treatment 
> based upon the
> >community attached to that route at ingress, you won't give 
> it the same
> (AF)
> >treatment across your network.
> >
> >Regards,
> >
> >Guy
> >
> > > -----Original Message-----
> > > From: Josef Buchsteiner [mailto:josefb at juniper.net]
> > > Sent: Tuesday, April 15, 2003 10:32 AM
> > > To: Alexander Kjellerstedt; juniper-nsp at puck.nether.net
> > > Subject: Re: [j-nsp] Classify packets with BGP community policy
> > >
> > >
> > > Alexander,
> > >          please look at this userguide under the section 
> "override 
> > > the input classification"
> > > where you configure any policy and the actions is class
> > >
> > > http://www.juniper.net/techpubs/software/junos/junos57/swconfi
> > > g57-interfaces/download/swconfig57-interfaces.pdf
> > >
> > >
> > > thanks
> > > Josef
> > >
> > >
> > > At 11:11 AM 4/15/2003, Alexander Kjellerstedt wrote:
> > > >Hello!
> > > >
> > > >Is there anyone out there who knows if JunOs has support for
> > > what Cisco call
> > > >QPPB?
> > > >I'm trying to classify packets to Assured Forwarding class
> > > and rewrite TOS
> > > >field when a packet comes in to a destination that has a certain 
> > > >BGP community.
> > > >
> > > >
> > > >Regards
> > > >
> > > >
> > > >//Alexander
> > > >
> > > >
> > > >
> > > >_______________________________________________
> > > >juniper-nsp mailing list juniper-nsp at puck.nether.net 
> > > >http://puck.nether.net/mailman/listinfo/juniper-nsp
> > >
> > > _______________________________________________
> > > juniper-nsp mailing list juniper-nsp at puck.nether.net 
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> > >
> >
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