Re: [Dcpel] Purpose of a diffserv control plane
Steven Van den Berghe <steven.vandenberghe@intec.ugent.be> Tue, 08 November 2005 18:23 UTC
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From: Steven Van den Berghe <steven.vandenberghe@intec.ugent.be>
Organization: Ghent University
To: dcpel@ietf.org
Subject: Re: [Dcpel] Purpose of a diffserv control plane
Date: Tue, 08 Nov 2005 19:23:38 +0100
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Thanks to some timezone difficulties, i had some time this morning to reflect on the results of the ops area meeting and tried to identify some interesting things that would be useful for dcpel to work on, and aren't afaik tackled in the related WGs (NSIS etc). One thing that came to mind was differentiated admission control (or control plane service differentiation): although services at the dataplane are identified by their codepoint, several higher level services could use this DSCP-identified transport (e.g. you could have an EF dataplane connectivity for multimedia services, but with a business/residential user differentiation at the control plane). I used to play around with a few of these things a while ago (in a TE environment, but it is probably marginally applicable to dcpel too). The idea was to introduce the concept of a QoS-session, using XACML as a service description and access mechanism. Some slides on this work can be found on: http://www.policy-workshop.org/2004/slides/Berghe-SonarPolicy04.pdf Regards, Steven On Tuesday 08 November 2005 12:25, Pulliam, Jeffrey S wrote: > A couple of things - > > - For those interested in follow up, I want to repeat the offer of lunch at > the IETF on Tuesday November 8 at 11:30 - in the MacKenzie room. The room > is on the first floor near the meeting registration tables. > > - In hopes of starting a discussion, I would like to try out the following > as a starting position for discussion: > > The purpose of a diffserv control plane is to provide automated control of > the diffserv domain, governed and constrained by policy. Control functions > configure the diffserv domain to deliver services in response to requests. > Requests to the control function are made by users, network operations, and > network management. The control plane contains necessary rules and logic > to respond to the requests automatically, with resulting actions including > actions to configure the network to accept (or reject) the request, and > actions to respond to the requestor with status of the request. > > Request can originate internal to the diffserv domain, or originate from > other network domains. Actions in response to the requests are either > actions affecting the internal diffserv domains, or are actions that cross > domain boundaries (in the form of requests?). A quick and dirty simple > picture showing the contexts (lots of room for improvement). > > Requestors Control Actions > > *********** > User<------>* *<----->Network Configuration > * Control * > Net Op<---->* Plane * > * *<----->Response to Requestor > Net mgt<--->*********** > > What is the role, functions, and constraints of signaling within the > diffserv domain? I would like to revise (or replace) the above to > accurately reflect the role of signaling within a diffserv domain. > > Suggestions? > > Jeff Pulliam > > > > _______________________________________________ > Dcpel mailing list > Dcpel@ietf.org > https://www1.ietf.org/mailman/listinfo/dcpel -- Steven Van den Berghe Department of Information Technology Ghent University - IBBT - IMEC http://www.ibcn.intec.ugent.be Tel: +32 (0) 9 331 49 73 Fax: +32 (0) 9 331 48 99
_______________________________________________ Dcpel mailing list Dcpel@ietf.org https://www1.ietf.org/mailman/listinfo/dcpel
- [Dcpel] Purpose of a diffserv control plane Pulliam, Jeffrey S
- Re: [Dcpel] Purpose of a diffserv control plane Steven Van den Berghe
- RE: [Dcpel] Purpose of a diffserv control plane Hancock, Robert
- Re: [Dcpel] Purpose of a diffserv control plane Paulo Mendes
- RE: [Dcpel] Purpose of a diffserv control plane Pulliam, Jeffrey S
- RE: [Dcpel] Purpose of a diffserv control plane Roy, Radhika (AEAD)
- Re: [Dcpel] Purpose of a diffserv control plane Paulo Mendes