Quick QoS question

[grobinson23]

So, I've got an MPLS provider that is prioritizing traffic and limiting bandwith on a 100Mbit connection.  We've got to mark traffic using dscp designations and ACL's.  We have 4 buckets.  Real time (35%), Gold (25%), Silver (15%), and Default (remaining 25%). 

Here's the scenario.  Bandwidth utilization is at 100%.  All buckets are full.  Silver is filling its own bucket plus the default class.  My questions are as follows:

1.  If we have two systems filling the Silver (15%) bucket and the remaining default class, which system gets priority?  Is it FIFO?

2.  If we have two systems in Gold (25%), and they're filling the Gold bucket and begin to transmit more than 25Mbit:
     a.  Will it be FIFO for both systems?

     b.  Will Gold traffic begin to stomp on Silver traffic?

Thanks!

[Joseph W. Doherty]

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Posting

If QoS is provided/implemented by your MPLS provider, they're the ones you need to ask.  (Different platforms often implement QoS differently.)

BTW, you may need to have a NDA with your provider for they to reveal how they really will treat your traffic when there's congestion.

[grobinson23]

Let's assume for the sake of argument that they're using prioritize statements on 2951 routers.

[Joseph W. Doherty]

Such as?