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RE: [RPRWG] RAH: Re: Minutes of Rate Ad Hoc meeting



All,
 
Another key objective for 802.17 is to provide a scalable solution in addition to what Yiming had listed.
Scalable in terms of BW, delay, and feasibility
 
Guarantee minimum jitter is to define an upper bound. In defining the upper bound for 802.17 there are two parts;
1) on the ring
2) access to the ring
 
To meet the customer requirements trade off will have to be made:
1) BW utilization
2) delay/jitter
3) loss
 
Jitter in HP can be solved in different ways. Different method has different implications. What are you proposing?
 
See you tomorrow, on the wire....
 
Regards,
 
Harry
-----Original Message-----
From: Yiming Yao [mailto:YYao@xxxxxxxxxxxx]
Sent: Monday, March 18, 2002 2:52 PM
To: 'hans-j.reumerman@xxxxxxxxxxx'
Cc: stds-802-17@xxxxxxxx
Subject: RE: [RPRWG] RAH: Re: Minutes of Rate Ad Hoc meeting

Hans,
 
The current draft of the RPR standard tries to achieve several objectives: high link utilization, guaranteed minimum jitter for reserved HP traffic, no packet loss on the ring, etc, and these objectives are conflicting to each other sometimes. One customer may want to disallow any LP packet drop on the ring even this means high jitter for the HP traffic; another may want to guarantee minimum jitter to HP traffic (carrying TDM) at risk of occasionally dropping some LP packets.  
 
My suggestion is that RPR provide a choice for the customer to make his/her decision in conflict resolution.
 
I didn't assume the operator wants to adjust the total load/throughput. Maybe this can be done more easily if the above choice is provided.
 
Regards,
 
Yiming
-----Original Message-----
From: hans-j.reumerman@xxxxxxxxxxx [mailto:hans-j.reumerman@xxxxxxxxxxx]
Sent: Friday, March 15, 2002 1:35 AM
To: stds-802-17@xxxxxxxx
Subject: [RPRWG] RAH: Re: Minutes of Rate Ad Hoc meeting


> Yiming Yao: allow customer to choose between loss, jitter, and utilization

Is the underlying assumption that the operator of the ring (=customer?) wants to
adjust the total load/throughput?  Would this be for loadbalancing purposes?

regards,
Hans


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Hans-Jürgen Reumerman                                        Hans-J.Reumerman@xxxxxxxxxxx
Digital Communications & networking                  pww.pfa.research.philips.com/dc/
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