From: Reinhold Fischer (Reinhold.Fischer@gmx.net)
Date: Wed Aug 06 2008 - 11:18:27 ART
On Wed, Aug 06, 2008 at 04:14:11PM +0300, Harindha Fernando wrote:
> Hi,
>
> I have been trying to set QoS for mVPN in MPLS QoS but I am still unable to
> achieve it. below is the scenario...
>
> Reciever1 -->PE1-->P1-->P2-->PE2--->Source
> |
> |
> P3--->PE3--->Receiver2
>
> Core - PIM SSM
> Customer mVPN - PIM-SSM with static SSM mapping
>
> mVPN is working fine, but I need to offer some QoS in the core.
>
> at PE2 customer interface I have a input policy-map setting all muliticast
> traffic on that interface, set to DSCP AF41. the MPLS interface towards
> core I have an output policy allocating BW based on dscp or exp marking and
> also I do set exp values. DSCP AF41 = Exp 4
>
> when I put a output policy in the PE1 and PE3 customer interfaces to match
> DSCP AF41 I do not see any matching packets.
>
> since mVPN traffic is going through GRE tunnels I don't see any possibility
> of setting the DSCP values in the GRE header as this Tunnel interfaces are
> not configurable.
>
> can any body tell how can we achieve the QoS for mVPN ?
>
> I am using 7600s with RSP720 and 12.2(33)SRC1.
>
Harin,
what kind of linecards are in use on the 7600s? Are you sure that your unicast
QoS is OK and you have only issues with the multicast QoS? When the multicast
traffic is encapsulated with the multipoint GRE header, it should copy the QoS
information of the original packet into the new header. I did not verify this
on 7600/SRC but with 6500/SXH2a. Just to make sure: You did consider that multicast
is forwarded as IP and not MPLS and your QoS settings are adjusted to this?
The cisco-nsp mailing list is also a good place to ask about such stuff....
hth
reinhold
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