SV: [j-nsp] Classify packets with BGP community policy

Alexander Kjellerstedt alle at telia.net
Tue Apr 22 15:56:29 EDT 2003


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/swconfig57-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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