RE: Issue-5: RE: Dropping the Local Overbooking Multiplier (LOM) meth od from D S-TE specs?

["Francois Le Faucheur (flefauch)" <flefauch@cisco.com>]

Sanjaya, Dimitry,

I could be wrong here (apologies if that is the case), but I have the
impression the point of disconnect between you two is that:

Dimitry's pretty much arguing that:
	- if you need per-CT-per-Link ratios and can tolerate some
inaccuracy in how a CT affects the global constraints, then you do NOT
need LOM.

While Sanjaya is pretty much arguing that:
	- if you need per-CT-per-Link ratios and want accuracy in how a
CT affects the global constraints, then you do need LOM.

Both are true. The trick is in accuracy of how a CT impacts other CTs
who share a global constraint.

Hope that helps 

Francois

>> -----Original Message-----
>> From: Choudhury, Sanjaya [mailto:Sanjaya.Choudhury@marconi.com] 
>> Sent: 05 June 2003 15:06
>> To: te-wg@ops.ietf.org
>> Subject: RE: Issue-5: RE: Dropping the Local Overbooking 
>> Multiplier (LOM) meth od from D S-TE specs?
>> 
>> 
>> 
>> Hi Dimitry!
>> > -----Original Message-----
>> > From: Dimitry Haskin [mailto:dhaskin@axiowave.com]
>> > Sent: Wednesday, June 04, 2003 11:13 AM
>> > To: 'Choudhury, Sanjaya'; te-wg@ops.ietf.org
>> > Subject: RE: Issue-5: RE: Dropping the Local Overbooking Multiplier
>> > (LOM) meth od from D S-TE specs?
>> > 
>> <snip..>
>> > > 
>> > > 	2. For a moment let is assume that preemption *is* 
>> > > 	deployed in the domain. Can you explain me how I 
>> > > 	will achieve the following [please be specific in
>> > > 	what the user will need to do and the BC model in 
>> > > 	use]:
>> > > 
>> > > 		case-1: want to overbook data-traffic without
>> > > 		overbooking voice traffic.
>> > > 
>> > > 		case-2: Want to overbook the voice traffic by
>> > > 		10%, but want to overbook data traffic by 40%
>> > > 
>> > > 		case-3: want to overbook gold-traffic by 10%,
>> > > 		overbook silver-traffic by 15%, overbook 
>> > > 		normal-traffic by 20%
>> > 
>> > What is the catch? Why would not you do just that? I.e., 
>> > overbook each CT
>> > independently to their respective designated level. 
>> 
>>   I am still trying to understand _how_ (you propose to
>>   overbook each CT independently)? DSTE-PROTO proposes
>>   3 approaches: 
>> 	(i) LSP Size overbooking i.e user specifies a 
>> 	higher/lower bw requirement for the LSP during 
>> 	creation)
>> 	(ii) Link Size overbooking (user modifies the 
>> 	max_reservable_bw)
>> 	(iii) LOM
>>   Which of these above three approaches, should the 
>>   administrator use (obviously you are not indicating
>>   (iii) ?
>> 
>>   Or are you proposing to manipulate the BCs (for 
>>   individual CTs)???
>> 
>> > Or, I supposed, you have missed the aggregate constraint from 
>> > you examples
>> > which would make them slightly more illustrative. Not that I 
>> > want to help
>> > you to make your case ;)
>> 
>>   Your help will be appreciated.
>> 
>>   Thanks,
>>   sanjay
>> 
>> >
>> <snip..>
>> > 
>> 
>>