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Re: research questions
When you say "Active and Programmable network" you also mean QoS
Discovery, I mean finding/discovering QoS capable network equipments
and identifing what kind of QoS resources are available/in use ?
I've been studing it (QoS discovery) and right now I am looking for
alternative ways of getting resource information from network equipments,
e.g., not just SNMP, LDAP, X.500, etc.
ps.: sorry by my english.
Rodrigo Uzun Fleischmann
Mestrando em Ciencia da Computacao
Laboratorio de Comunicacao de Dados
Universidade Federal do Rio Grande do Sul
Instituto de Informatica
On Fri, 13 Oct 2000, Muneyb Minhazuddin wrote:
> > At 4:16 PM -0400 10/11/00, Dhiman Barman wrote:
> > >Hi,
> > > May I know what are some of the open problems with Linux-diffserv
> > >which one can look at as potential research areas.
> > >
> > >db
> > There are a number of bit-fiddling questions which get debated on
> > this newsgroup. But one of the real-world problems is how to control
> > QoS. If everybody has the 'priority button' what's to keep them from
> > all pushing it? Leaving us back at the best-effort position we're at
> > now.
> IMHO, the SLAs that are established between the edge and the core (or
> enterprise and ISP) will be able to resolve this issue by MF
> classification, policing and remarking. Therefore even if everybody pushes
> the 'priority button' they will be given only the capacity that they have
> paid for and negotiated in their SLAs. Such a situation has been accounted
> for in the RFCs.
> There's language on bandwidth brokers in the IETF working group
> > papers, but not much in way of implementation. As a suggestion....
> Bandwidth Broker specs and implementations were assigned to the
> Internet2's Qbone community and is available from their website. There is
> a freebsd implementation by Andreas as well.
> There has been attempt for Intserv over diffserv using COPS-ODRA by
> Roberto Mameli and Stefano Salsano from CoRiTeL, my understanding from
> Roberto's presentation at Adelaide IETF meeting was that they had used
> linux, I don't know the status (if Roberto is still on the list, he can
> give us an update). The IDs were
> COPS Usage for Outsourcing Diffserv Resource Allocation
> Integrated services over DiffServ network using COPS-ODRA
> I have been concentrating on extending the Linux QoS architecture for an
> Active and Programmable network. A few vendors are headed in this
> direction and standards are in there incubation stage, a linux
> implementation attempt would keep us ahead. I will send out an
> announcement once I have something decent going.
> All the best.
> Muneyb Minhazuddin - Telecommunications Research Engineer
> CSIRO Telecommunications and Industrial Physics
> Sydney, NSW, Australia.
> Phone no. : 61 2 9372 4113
> FAX : 61 2 9372 4490
> e-mail : email@example.com
> Home Page : http://www-networks.tip.csiro.au/~mminhazu