[Iccrg] updated RG CTCP review

[Douglas Leith]

I haven't read the revised review just yet but as I recall there were  
a number of issues raised by people re the current ctcp internet  
draft (ambiguities in the spec, also some fundamental details such as  
how RTT is measured and filtered etc).  I'd suggest we wait for the  
revised draft to be circulated (maybe it has and I missed it ?)  
before setting a short two week fuse on the review so that at least  
we're reviewing the most up to date document.   How do other people  
feel ?

Re safety, personally I'd definitely like to see some tests carried  
out over wireless before proceeding since its such a common last  
hop.   The concern is that random access wireless (such as 802.11)  
might have only a weak connection between delay and congestion, and  
so have implications for the behaviour of delay algorithms.

I also don't think I completely buy the low loss regime argument for  
safety as it seems to be stated in the iccrg minutes.  That provides  
safety in the sense of reverting to reno on lower speed links, but  
surely we do need to think at least a little about safety on higher  
speed links ?  If such links are rare so that we don't care about  
safety, then we have no problem.  However, if they are not rare then  
behaviour on those links should be considered, shouldn't it ?   Since  
higher speed links here corresponds to a pipe size of 38 packets, I  
suspect that pipes larger than this are common enough.

Doug

On 27 Mar 2008, at 13:56, Eddy, Wesley M. (GRC-RCN0)[VZ] wrote:

> Based on the responses to the first draft, and the discussion
> we had in Philadelphia, I've prepared an update to the RG's
> Compound TCP review (attached).  Please look this over in
> the next two weeks, and we will forward it to TCPM if no major
> changes are noted by then.
>
> I've added links to some of the implementation and
> experimental results, and to mailing list discussions.
> If there are other links that should be added to provide
> even more backup, please note it to us.
>
> Thanks for your help (and patience!) in completing this first
> review for TCPM.<ctcp- 
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