WRED at the interface level might normally be exclusive with a service policy, unsure, because it might vary based on platform. The router should preclude you from doing so if unsupported on the platform.
Do keep in mind, you can often use WRED within a policy class, which is often a much better idea. For instance, in your post, it might not be a good idea to use WRED on your ROUTING or VOICE class, but perhaps good for class-default.
If you're thinking, with WRED you could adjust the DSCP weigths to treat ROUTING and VOICE different from other classes, certainly, and that's what you might need to do further downstream if just using WRED alone, by why subject all traffic to such QoS when there's no real benefit to do so (i.e. when you're using a service policy).
Srinath's post provides an outline of what needs to be done. Without knowing more information, unable to provide an exact configuration since QoS features vary on platform and IOS version.
Some additional notes to what Srinath posted: you may need to apply QoS in both directions; LLQ is normally used just for real-time traffic like VoIP, you could also place your Citrix traffic into a named class with the bandwidth required specified; later NBAR can match type of some Citrix traffix (e.g. screen scraping vs. printing); you might match to both Citrix protocol and to/from a host address, or either by itself. (Also if current queuing is FIFO, WFQ might alone be sufficient for your needs.)
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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