Re: draft-nordmark-multi6-sim-00.txt

["JORDI PALET MARTINEZ" <jordi.palet@consulintel.es>]

I need to read the document again then ...

I understood that the routers rewrite but the information is in the extension header ...

Anyway, its a question that probably requires the answers from the router manufacturers, to see if this is viable.

Regards,
Jordi

----- Original Message ----- 
From: "Erik Nordmark" <Erik.Nordmark@sun.com>
To: "JORDI PALET MARTINEZ" <jordi.palet@consulintel.es>
Cc: <multi6@ops.ietf.org>
Sent: Monday, October 27, 2003 10:37 AM
Subject: Re: draft-nordmark-multi6-sim-00.txt


> > The concern was regarding the hardware already in the factory, which took a
> > long time to be designed, not considering extension headers, so if we use
> > them, it should be a firmware process, instead of hardware based, with the
> > consequent lower performance.
> 
> Yes, but routers don't look at any extension headers (except the hop-by-hop
> header) in the forwarding path.
> 
> Thus the only issues I can think of here is the desire to do
> QoS classification or (firewall) filtering on ULP header fields.
> I don't know what classes of routers support such things at wire-speed
> today.
> Are there other issues?
> 
>   Erik
> 

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