fw:re:[Diffserv-interest] how to treat incoming traffic
"Jeff Norman" <jnorman@nortelnetworks.com> Mon, 17 September 2001 17:27 UTC
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Date: Mon, 17 Sep 2001 13:25:19 -0400
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From: Jeff Norman <jnorman@nortelnetworks.com>
Reply-To: Jeff Norman <jnorman@nortelnetworks.com>
Subject: fw:re:[Diffserv-interest] how to treat incoming traffic
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Oops... forgot to include DiffServ-Int group in response... sorry. --Jeff ---forwarded-message----> >Subject: re:[Diffserv-interest] how to treat incoming traffic >Date: Sep 17 10:01 2001 >From: "Jeff Norman" <jnorman@americasm01.nt.com> >To: "Andrzej Czerczak" <Andrzej_Czerczak/HeadQ@netia.pl> > > >Andrzej, > I think you may be confused with the main objective of using ECN in >TCP flows. The purpose of using ECN with TCP flows is to enable the >applications to react to network congestion with their TCP window >sizes without the need for TCP packets being dropped, which causes >time-outs and packets being re-transmitted (using up more router and >network resources). > >I would say that your statement of using egress TCP traffic policing >would not be used in place of ECN, but instead be used with it (to >determine the ECN of TCP packets) > >I have not heard of too many vendors implementing IP ECN into >their routers, nor have I heard a big push for it by customers in >the industry. > >I too would like to hear from others about what they think about >the practical value of IP ECN. > >I have not heard anything about research regarding controlling UDP flows, >but someone else may have. > >Best Regards, >--Jeff > >In message "[Diffserv-interest] how to treat incoming traffic", you write: > >>Hi, >>I know the ECN-based proposals how to control TCP-based incoming traffic >>in DiffServ architecture. Has it at the moment a practical value? Why not >>to use egress TCP traffic policing? >>Could you point out on-going research how to control UDP incoming traffic >>if it conforms to the customer contract (receiver-based traffic control) in >>the diffserv architecture? >> >>rgrds >>Andrzej >> >> >>_______________________________________________ >>Diffserv-interest mailing list >>Diffserv-interest@ietf.org >>http://www1.ietf.org/mailman/listinfo/diffserv-interest >> > _______________________________________________ Diffserv-interest mailing list Diffserv-interest@ietf.org http://www1.ietf.org/mailman/listinfo/diffserv-interest