The MPLS-OPS Archive

[Christopher Lewis <chrlewis@cisco.com>]

The answer to your first question is not a Cisco specific question. The 
bandwidth constraint is enforced by scheduling mechanisms. The answers to 
your subsequent questions depend on which queuing algorithms you select and 
how they are configured, which is a vendor specific issue.

Chris

At 05:14 AM 1/30/2002, stephen mullaney wrote:

>Hi there,
>
>This may be a Cisco specific question, but....
>
>For a given link which carries both a MPLS guaranteed tunnel and some 
>"best effort" non-MPLS traffic how is the bandwidth constraint for the 
>tunnel enforced.
>
>eg if the tunnel is 20M and the link is 100M, I assume that if no other 
>traffic is on the link, the tunnel can use more than the 20M assigned to 
>it.  But when "best effort" traffic starts to traverse the link, how are 
>the two types of traffic treated. Is the MPLS traffic pushed-down to its 
>bandwidth guarantee as the best-effort increases? Do both types of traffic 
>get the same treatment/queuing? What is the algorithm for differentiation? etc?
>
>Thanks
>Stephen
>
>
>
>

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