[nsp] DSCP transparency

[Eduard Metz]

Sounds strange. Are you sure you receive marked traffic on the GSR (from the
ISP)?

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net]On Behalf Of George Boulescu
> Sent: donderdag 13 maart 2003 23:06
> To: cisco-nsp at puck.nether.net
> Subject: [nsp] DSCP transparency
>
>
>
> Hi.
>
> I have the following setup:
>
> <ISP router>---LCOC12c-<GSR>-LC-1GBIT------<7500>
>
> My ISP is marking some of the traffic with a special DSCP valuee.
>
> I want to do something (counting&shapping) with this marked traffic.
> My border router is a 12406 running 12.0.21ST5. I cannot do CBQ on it
> because the engine 0&1 LC that I have don't support it, so I want to
> evaluate the marked traffic on my 7500.
>
> The problem is that all the packets comming from the GSR to
> the 7500 have
> a DSCP value of 0, so the GSR is rewriting the DSCP field in
> the packets.
>
> Is this a "feature" or a bug ?
> I've also had marked traffic routed through a bunch of
> routers (7xxx) and
> the DSCP value is preserved over the routers.
> Am I missing something ?
>
>
> Thanks in advance.
>
> --
>
> George Boulescu
> Senior Network Engineer
> RoEduNet Bucharest NOC
> CCAI, CCNA
>
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