[cisco-voip] QoS for Gatekeeper RRQs

[Wes Sisk]

Looks like you're resigned to LLQ, no default marking.
http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a00801a62b9.shtml 


Just use LLQ to match and prioritize the packets for UDP 1718
and 1719 for RAS GK unicast discovery and RAS keepalives,
respectively.  Prioritize 224.0.1.41 for multicast GK discovery
too if you want.

/Wes

Andre Beck wrote:

>Hi,
>
>I'm installing a network of CCMEs which register themselves at a
>central H.323 gatekeeper (IOS). I've got every H.323 traffic to
>bear the intentional DSCP either by default or using "ip qos"
>in the dialpeer blocks. I haven't found a way to control the
>DSCP or IP precedence used when the gateway talks to the gatekeeper,
>though. According to precedence accounting these RRQs are done
>with a precedence of 0 and consequently I lose registration with
>the gatekeeper when firing heavy traffic on the installation (QoS
>preserves the priority of voice and other signaling packets quite
>nicely, but the default traffic class drops packets, including
>the RRQ ping-pong).
>
>How do I set the DSCP used by gateway/gatekeeper functions that
>are not related to dialpeers?
>
>TIA,
>Andre.
>  
>