[nsp] QoS for a particular set of flows over a DS3...

From: Andy McConnell (andym@ntt.net)
Date: Wed Dec 22 1999 - 14:09:07 EST

Here's a little puzzle:

        On a single DS3, I need to gurantee XMbps of bandwidth for a
        particular group of packets/flows to a peer. These packets/flows
        can be identified by source and destination IP. The DS3 terminates
        on the same router (R2) as the peer:
  
(customer)- - -(backbone)-R1-----DS3----R2----(Peer)

        We can assume that the IGP will make sure traffic to this
particialy peer will flow from R1 to R2 to the peer. I want the queueing
strategy to set a higher priority for packets from/to the customer on this
slow DS3.

Restrictions:
        
        This must be done only on the ends of DS3 link... meaning that
the rest of my network cannot be changed.

        R1 and R2 are 7513's running 11.1CC (IOS upgrades are welcomed,
only if necessary)

So far:
        
        I've considered using Priority/Custom Queueing, but I can't seem
to figure out how to assign these packets/flows to the custom queue. I've
considered using MPLS, but the Cisco docs are pretty hard to search
through to find out how to setup the bandwidth management on the TSP
tunnel.
        
Any other ideas?

-andy 

--
Andy McConnell	IP Operations Manager 			andym@ntt.net
NTT America 	Network and IP Service Division		+1 408 873 3757
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