Re: [MEXT] weird idea about flow bindings

[Suresh Krishnan <suresh.krishnan at ericsson.com>]

Hi Marcelo,

On 17/05/09 08:58 AM, marcelo bagnulo braun wrote:
> ok, let me try again because it seems i am failing miserably to 
> communicate what i want to say (or it simply so broken that people 
> cannot believe what they are reading :-)

I think it is a cool idea but it is very hard to realize in practice 
since it needs CNs to be changed.

> Suppose now that the app2 in the CN starts a flow to the MN. According 
> to RFC3697, the CN SHOULD assign a different flow label to the packets 
> belonging to this flow e.g. to this TCP connection. 

This is the crux of the issue. Almost every implementation I have seen 
sets the flow label to zero. This falls under the category "A source 
node which does not assign traffic to flows MUST set the Flow Label to 
zero.". Add to this the fact that compliance to RFC3697 is completely 
optional (it is not even mentioned in RFC4294), and this task quickly 
becomes pretty improbable.

Thanks
Suresh