[rbridge] IP data plane (Was: Use of 802.1ah Encaps)

[Joe Touch]

Gustavo J. A. M. Carneiro wrote:
>   Hello,
> 
>   Sorry to intrude, I just wanted to play devil's advocate here.. ;-)
> 
> On Ter, 2006-12-12 at 16:51 -0500, Gray, Eric wrote:
>> Joe,
>>
>> 	It's a huge drawback, and it requires configuration of
>> at least IP addresses - possibly per-interface.  That is not
>> going to work very well as a plug-and-play solution.
> 
>   An IP based data plane does not imply that you need configuration, not
> even IP addresses on interfaces.  Think of IP adhoc protocols
> (AODV/OLSR/etc.); they derive IP addresses from the L2 MAC address, or
> simply generate a random IP.

That works only if there is NO other IP traffic on that plane. We don't
know that rbridges will talk to each other over dedicated paths that
don't involve non-rbridge to non-rbridge traffic.

In that case, the IP addresses sent on certain link addresses - notably
multicast and broadcast - could interfere between rbridge use of those
addresses and non-rbridge use of those addresses.

-- 
----------------------------------------
Joe Touch
Sr. Network Engineer, USAF TSAT Space Segment

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