Re: Congestion control train-wreck workshop at Stanford: Call for Demos

[Fred Baker <fred () cisco com>]

On Sep 3, 2007, at 6:44 PM, Steven M. Bellovin wrote:
> More seriously -- the question is whether new services will cause  
> operator congestion problems that today's mechanisms don't handle.

and, it includes the questions of what operators will be willing to  
deploy. One of the questions on the table, for example, is whether  
the network might be willing to characterize available capacity on  
links in datagrams that traverse them, either in an IP option or some  
interior header such as an IPv6 hop-by-hop option. The canonical  
variants there are XCP and RCP.

As I understand it, the conference organizers want to do something  
about TCP, but the examples of why it should be done that they are  
bringing up related to video and other applications. So this is going  
to have to extend to some variation on a session layer (SIP, for  
example), and potentially protocols like dccp.