Panos,
My point was that if a carrier doesn't like the notion of a truely best effort service,
then he can define a service in which the traffic gets some level of guarantee. This
service level can be used to engineer trunks for best effort traffic providing a best
effort service that is "slightly better than (strictly) best effort.
Jerry
Panos Trimintzios wrote:
> Dear Jerry hi,
>
> On Wed, 1 Nov 2000, Jaroslaw Sydir wrote:
>
> -Michael,
> -
> -I'm not sure that I understand your question. If the traffic is truely
> -best effort then it requires no guarantees and you don't care about it
> -in your traffic engineering. It gets the lowest priority in the network
> -and is dropped in favor of the guaranteed traffic.
>
> Even if the traffic is "truely best effort" as you mention above you DO
> care about it in the traffic engineering of your network, since you do not
> want this type of service to be starved. This means that wnen you engineer
> your AS you should always try to keep some of its resources "free" to be
> used by BE traffic.
>
> -If you want to provide a "slightly better than best effort" service,
>
> What do you mean "slightly better than best effort"? Couldn't this type of
> service offering handled by a qualitative (or another)SLS? So if you name
> this as the "lowest of Olympic Services" or "slightly better than best
> effort" does it make much difference? I don't know in general but when it
> comes to engineering again it doesn't.
>
> cheers,
>
> PanOS
>
> -then this implies some level of performance guarantees for some amount
> -of this traffic. In this case you would describe it in terms of
> -individual e2e SLS just like the other types of services.
> -
> -Jerry
> -
> -
> -Michael Smirnov wrote:
> ->
> -> On Wed Nov 1 00:51:41 2000 Jaroslaw Sydir wrote:
> ->
> -> > Jean-Pierre and Pierrick,
> -> >
> -> > A traffic matrix (network wide SLS) can be specified as a set of individual e2e
> -> > SLS/services (represending the trunks that make up the traffic matrix).
> -> <...>
> ->
> -> How you plan to specify best effort traffic?
> ->
> -> cheers
> ->
> -> Michael
> -
>
> =======================================================
> Panos Trimintzios
> Research Fellow, Networks Research Group
> Centre for Communication Systems Research (CCSR)
> Univ. of Surrey, Guildford, Surrey GU2 7XH, U.K.
> Office: U37 / BA Building
> Tel: +44 (0)1483 876005 Fax: +44 (0)1483 876011
> Email: <p.trimintzios@eim.surrey.ac.uk>
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> =======================================================
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