Subject: RE: [v6tc] Issue 1: Could we live with UDP encapsulation always o n?

From: "Soliman, Hesham" <[email-masked]>
Date: Wed, 22 Dec 2004 15:41:08 -0500

Karen, 

 > Semi-conclusion:
 > Now worst case 7% "waste" of radio resources 
 > is certainly not negligible business wise, but it should 
 > not be a showstopper. This especially given that the bandwidths 
 > of the radio links are ever increasing AND that preferably 
 > only a small
 > portion of the traffic over the link will be tunnelling traffic. 
 > Personally, I am much more concerned
 > with the implementation aspects in end-nodes and routers.

=> 7 % is a _huge_ overhead. I'm much more concerned
about that than implementation issues. Also, depending
on the link layer, you might not be able to get the right
bearer, given these BW requirements. Additionally, packet
classification (if Diffserv is not used in the host) is 
more difficult. Much worse than that, UDP encapsulation for 
NAT traversal is very bad in wireless environments because 
it will usually involve keepalives, which means that a terminal
will never go dormant basically....here goes the battery lifetime! 

Anyway, I think you'll find that 7 % is a showstopper
for a lot of people and that they will need to either:
- compress it, or 
- Run native v6. 

It might be an incentive to run native v6, but until
then, it's a problem.

Hesham

 > 
 > I cannot say that any of this is show-stopper candidates, 
 > but all in all
 > it doesn't make v6-udp-v4 seem very attractive 
 > compared to v6-in-v4 the mechanisms we work with today.
 >  
 > BR, Karen
 > 
 > _______________________________________________
 > v6tc mailing list
 > [email-masked]
 > https://www1.ietf.org/mailman/listinfo/v6tc
 > 

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