The MPLS WG Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] SLA
Hmm delay less than 50 ms on a global network, Must be that new fangled faster than light tacyon networking. On Fri, 27 Jul 2001 20:41:42 -0400, Irfan Lateef wrote: >Fabriss, > >Earlier comments are generally true. But recent SPs have tightened >the SLA spec which is specified in term of the following, > >Bandwidth=100 Mbits, >Delay= less than 50 msecs, >and uptime = 99.999 % >and some more parameters .... > >And vendors are getting serious in engineering their products >to meet and exceed these expectations. > >Now the this can be implemented using several techologies and >frameworks, where MPLS and Diffserv both can be used mutually >or exclusively to meet the SLA. > >I can go on and on but look at this article which gives a good >view on SLA. > >http://www.networkmagazine.com/article/NMG20010521S0002 > >Irfan Lateef > > > > > >>From: Mooney Sherman <Mooney.Sherman@gov.ab.ca> >>To: 'Christian Kuhtz' <ck@arch.bellsouth.net>, Fabris Sergio >><fabriss@TELEFONICA.COM.AR> >>CC: mpls@UU.NET >>Subject: RE: SLA >>Date: Fri, 27 Jul 2001 14:59:36 -0600 >> >>I agree with some of your comments . It can be a marketing tool (gimmick?) >>but normally a client has certain expectations or need - such as a certain >>level of bandwidth requirement for the acceptable performance by an >>application - say video streaming. So the Telco guarantees a certain >>bandwidth that is acceptable or perhaps a maximum downtime in the form of >>SLA. SLA is simply an agreement that a vendor or supplier can and will >>deliver to a client. It can also be used in the context of an application >>i.e. an application can process/ redirect at least Xnumber of tags for >>instance in MPLS. Then this would be the SLA for it. >> >>-----Original Message----- >>From: Christian Kuhtz [mailto:ck@arch.bellsouth.net] >>Sent: Friday, July 27, 2001 2:45 PM >>To: Fabris Sergio >>Cc: mpls@UU.NET >>Subject: Re: SLA >> >> >> >>On Fri, Jul 27, 2001 at 04:34:09PM -0300, Fabris Sergio wrote: >> > Is SLA (Service Level Agreement) a term for DiffServ networks only? >> > Can it be used in an MPLS network? >> >>Sergio, >> >>You can define an SLA for literally anything, including the performance of >>your dry cleaner. >> >>And an MPLS network can be a 'DiffServ network'; I presume you intend to >>describe a network in which differentiated services of some kind are >>offered... >> >>SLA per se has nothing to do with differentiated services, other than that >>differentiated services with methods and tools as proposed by IETF DiffServ >>can be used to provide a service as described by an SLA. Note also that >>many >>SLAs actually have little to do with a direct link to the technology >>underneath; it is possible that the service you purchase w/ SLA is >>identical >> >>to the service you purchase w/out SLA, or the service w/ SLA may be very >>different than the one w/out SLA. An SLA can be a marketing gimmick, a >>financial tool, a technology constraint, or any combination of the above. >> >>The term SLA is a very much abused term, often driven more by marketecture >>and >>marketeering than technology. And then there's the set of issues around >>SLA's >>with teeth.. >> >>But, I'm rambling.. What specifically are you looking for? >> >>Cheers, >>Chris >> >>-- >>Christian Kuhtz <ck@arch.bellsouth.net> -wk, <ck@gnu.org> -hm >>Sr. Architect, Engineering & Architecture, BellSouth.net, Atlanta, GA, U.S. >>"I speak for myself only."" > > >_________________________________________________________________ >Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp
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