[rbridge] When would an RBridge say "I don't want layer 2 multicast"?

[Dinesh G Dutt]

I agree,

Dinesh
Donald Eastlake wrote:
> The Other Multicast bit was added after Dino Farinacci advocated it at
> the last Chicago meeting. (See minutes:
> http://www.ietf.org/proceedings/07jul/minutes/trill.txt) This was put
> through a consensus call on the working group mailing list resulting
> in the formal consensus determination here:
> http://www.postel.org/pipermail/rbridge/2007-September/002470.html.
>
> This bit has been in the draft since verison -06. It defaults to "on"
> so, unless you go to some effort to configure it to off, all RBridges
> do get all the non-IP derived multicast traffic for the VLANs they
> advertise they are connected to. It doesn't have any effect on layer 2
> or TRILL control frames.
>
> In light of all this, I am very reluctant to consider changing this
> part of the design unless there is a clear consensus to re-open the
> issue.
>
> Thanks,
> Donald
> =============================
>  Donald E. Eastlake 3rd   +1-508-634-2066 (home)
>  155 Beaver Street
>  Milford, MA 01757 USA
>  d3e3e3 at gmail.com
>
>
>
> On Sat, Jun 6, 2009 at 2:22 PM, Joe Touch<touch at isi.edu> wrote:
>   
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>> Donald Eastlake wrote:
>>     
>>> Hi Joe,
>>>
>>> I'm assuming you think that we don't need this bit?
>>>       
>> It seems like even having it around is asking for trouble, AFAICT.
>>
>> Joe
>>
>>     
>>> On Thu, Jun 4, 2009 at 7:18 PM, Joe Touch<touch at isi.edu> wrote:
>>> Radia Perlman wrote:
>>>       
>>>>>> There's currently a flag in an LSP for an RBridge to say "don't send me
>>>>>> layer 2 multicasts that aren't
>>>>>> derived from IP multicasts".
>>>>>>
>>>>>> Would this ever be used? Can all layer 2 non-IP-derived multicasts
>>>>>> really be lumped into the same
>>>>>> bucket and turned on and off as a unit?
>>>>>>             
>>> It might be useful not to make any assumptions about future use of L2
>>> non-IP-derived mcast. Someone might come up with something that will
>>> then break over rbridges, and that doesn't sound like a win...
>>>
>>> Joe
>>>       
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>>     
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