[j-nsp] Re-write rule for GRE interface

[Shiva Shankar]

Hi All, Thanks for the reply. Platform is M7i, and the junos is 9.3

What i want to achieve is marking all the traffic leaving this GRE interface
with a particular DSCP value, say EF. The content of the GRE packet is a
layer 3 vpn datagram (IP datagram inside a MPLS packet)...

here's the o/p: (i've tried using dscp marking for the GRE interface, but
its always set as 00)

Router <Manager at head-end-PE1>> show class-of-service interface gr-1/2/0
Physical interface: gr-1/2/0, Index: 132
Queues supported: 4, Queues in use: 4
  Scheduler map: bfin-cos, Index: 22125
  Chassis scheduler map: bfin-cos, Index: 22125
  Logical interface: gr-1/2/0.0, Index: 66
    Object                  Name                   Type
Index
    Rewrite                 mark-dscp              dscp
55103
    Rewrite                 exp-default            exp
(mpls-any)             33
    Classifier              exp-default
exp                        10
    Classifier              ipprec-compatibility
ip                         13
Here's the config of the interface:
Manager at head-end-PE1> ...s-of-service interfaces gr-1/2/0

scheduler-map smap-cos;
unit 0 {
    rewrite-rules {
        dscp mark-dscp;
    }
}

Router <Manager at head-end-PE1>> ...-service rewrite-rules dscp
mark-dscp
forwarding-class be {
    loss-priority low code-point be;
    loss-priority high code-point cs3;
}
forwarding-class test1 {
    loss-priority high code-point cs1;
    loss-priority low code-point cs2;
}
forwarding-class ef {
    loss-priority high code-point cs4;
    loss-priority low code-point cs5;
}
forwarding-class nc {
    loss-priority high code-point cs6;
    loss-priority low code-point cs7;
}

Thanks
On Mon, Jan 17, 2011 at 1:04 AM, Diogo Montagner
<diogo.montagner at gmail.com>wrote:

> Hi Shiva,
>
> could you please post the command "show class-of-service interface
> gr-x/y/z.abc" ?
>
> Regards
> ./diogo -montagner
>
>
>
> On Fri, Jan 14, 2011 at 10:59 PM, Shiva Shankar <shankarks at gmail.com>
> wrote:
> > Hi All, I'm trying to mark the DSCP value on a GRE packet, so that the
> telco
> > can handle as per our contracted services. I've tried
> > 'copy-tos-to-outer-ip-header', but it doesn't work as the inner datagram
> of
> > a GRE packet is a MPLS datagram.
> > Here, how it looks on the wire (found using packet capture)
> >
> > Frame>>>Ethernet II header >>> IP packet >>> GRE header >>> MPLS header
> >>>
> > origianl IP packet with data
> >
> > A Layer 3 VPN packet while leaving the local PE to remote PE, uses GRE
> > interface which has LDP enabled.
> >
> > I've tried even applying dscp rewrite rules, but it doesn't work. Any
> ideas.
> >
> > Thanks
> > Shiva
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> >
>