[hops] Questions to ask

[Mirja Kühlewind <[e-mail]>]

Hi again,

at the last meeting, the main interest of the group (for now as a starting 
point) was to collect and see measurement data. However, collecting random 
measurement data might not be the most useful thing to do and makes it also 
often difficult to get access to existing data sets. While the focus of the 
proposed hops group is clearly on measurement of middlebox impairments, we 
believe we could even be more specific than that and try to tackle certain 
questions that you like an answer for or that have been raised lately in some 
context e.g. other working group.

One example is on UDP impairments because there are a bunch of new protocols 
that have chosen to encapsulate over UDP to enable Internet path traversal (or 
at least make it more likely to be able to connect). The questions here are:

- How likely is it that your traffic will be fully blocked if you use (a new 
unknown protocol over) UDP?

- How likely is it that your UDP traffic is throttled to a certain rate while 
TCP traffic on the same path is not?

There might be even more questions in this context (but these are the ones we 
are actually currently working on).

So now, the purpose of this email is, to collect more of these questions such 
that we can use this working group as a forum to find a match between people 
that have a question and people that have the data to (at least partially) 
answer that question.

Therefore please send questions to the list! Or start a discussion on what areas 
we might want to focus on so that we as a group can try to find the right 
questions! Or if you have data, tell us which questions you can already answer 
or at least (at high level) which kind of data you have!

Thanks,
Brian and Mirja