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Re: QoS/CoS in the real world?
On Sun, 14 Jul 2002 00:46:31 +0100 (BST) "Stephen J. Wilcox" <[email protected]> wrote: > Boy, this is what people are always telling me about multicast! (Except I never hear about ATM being popular.) And I've heard the same about IPv6. Has the Internet really fallen into old age so rapidly ? Regards Marshall Eubanks > Well, end of the week and the responses dried up pretty quickly, I think > thats a > response in itself to my question! > > Okay, heres a summary which was requested by a few people: > > Other people too are interested in my questions, they dont implement QoS in > any > saleable manner and wonder how it can be done and whats actually required. > > A number of people think QoS was interesting for a while but that its never > either found its true use or is dead. > > There are unresolved questions from a customer point of view as to what they > are > actually going to get, what difference it will make and how they can measure > their performance and the improvements from QoS. > > There is a real demand for guaranteed bandwidth, however this tends to be in > the > form of absolute guarantees rather than improvements above "normal" hence > ATM remaining a popular solution. > > There is a requirement to differentiate voice traffic, however this is > necessarily done by the network anyway in order to offer the service, this > being > the case the customer doesnt pay extra or gets to know much about how all the > fancy bits are done. > > > On the face of it this is all negative. Nobody has responded saying there are > genuine requirements for services to be offered to customers. Nor has anybody > responded with any descriptions of implementations. > > I conclude either the people doing this are successful and keep their secret > safe or the world is yet to sell largescale QoS across IP. > > Steve > > > On Mon, 8 Jul 2002, Stephen J. Wilcox wrote: > > > > > Hi all, > > I've been looking through the various qos/cos options available, my > particular > > area was in how IP (MPLS perhaps) compares and can be a substitute for ATM. > > > > Well, theres lots of talk and hype out there, from simple IP queuing eg > cisco > > priority queuing, rsvp, diffserv, mpls traffic engineering etc > > > > But two things are bugging me.. > > > > 1. To what extent have providers implemented QoS for their customers > > > > 2. Hype aside, to what extent do customers actually want this (and by this > I > > dont just mean that they want the latest QoS because its the 'latest > thing', > > there has to be a genuine reason for them to want it). And this takes me > back to > > my ATM reference where there is a clear major market still out there of ATM > > users and what would it take to migrate them to an IP solution? > > > > Also, how are people implementing bandwidth on demand (dynamic allocation > > controlled by the customer) solutions to customers > > > > Cheers > > > > Steve > > > > > > > > > >