Re: [v6ops] IPv6 Diagnostic Option

Nalini

	Basically I agree with what others said.

	If there were any reason for not using the flow label, I think you should state it very clearly in the document. 

Regards,
.as

On 22 Jul 2011, at 04:59, Roland Bless wrote:

> Hi Erik,
> 
> On 22.07.2011 08:35, Erik Kline wrote:
>>> I don't think that your proposed solution is necessary, since
>>> IPv6 has the Flow Label, that - if set by the source - may be
>>> very well suited for your purpose (tracking flows along a path).
>>> Please see http://datatracker.ietf.org/doc/draft-ietf-6man-flow-3697bis/
>>> for more details.
>> 
>> I also think use of the flowlabel will prove operationally simpler.
> 
> Yes, fully agree since
> a) the Flow Label is part of the standard common IPv6 header, thus
>   always present and easier to process (even in the fast path) as
>   you also pointed out.
> b) Useful Flow Label support in end-systems (i.e., setting the Flow
>   Label correctly) is more likely than support for this newly
>   suggested additional option, once it would have been adopted.
> c) it is really unclear how you would enable the use of the proposed
>   option in end-systems on demand. In case of debugging a network
>   problem you need to enable this option later, if not too late.
> 
> Regards,
> Roland
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