Re: [trill] 答复: Charter Revision Active-Active Item

Active-Active just means nothing is passive  

It comes from the term active-passive. Where there is often multiple passive objects waiting to become active. 

It does not imply 2,3,4 etc. 

Just means that every path or device is active, and not passively waiting to take over for a failed unit/node.

On May 6, 2013, at 8:56 PM, Donald Eastlake <d3e3e3@gmail.com> wrote:

> Hi,
> 
> On Thu, May 2, 2013 at 11:06 PM, Haoweiguo <haoweiguo@huawei.com> wrote:
>> Hi Donald,
>> Active-Active normally means dual-home, in trill multi-homing scenario, CE may be accessed to more than two edge RBs. so the terminology of Active-Active had better be modified to All-Active to support more general multi-access scenario.
> 
> I'm not sure....  I agree that "Active-Active" is a bit misleading and
> when I draw diagrams I try to always include three TRILL switches at
> the edge so it is clear that it is not limited to two. "All-Active"
> sounds more accurate but people are not used to it. They are used to
> saying "Active-Active" and I think they usually understand that it can
> be more than two...
> 
> On Thu, May 2, 2013 at 10:53 PM, Haoweiguo <haoweiguo@huawei.com> wrote:
>> Hi Donald,
>> For Active-Active access scenario, the following requirements also should be considered:
>> 
>> Support fast node and link failure detection.
> 
> Yes.
> 
>> Support LACP configuration and state synchronization.
> 
> I think LACP or the like may be a part of one solution for the case
> where the TRILL switches cannot see each others Hellos, so I do not
> think the problem statement should mention it. There may also be a
> solution where they can see each others Hellos...
> 
>> Support MAC-Sharing to avoid always broadcasting
> 
> Minimizing unknown destination MAC flooding seems like a good goal.
> 
>> The detail of the above requirements have been described in the draft <draft-hao-trill-rb-syn-00>.
>> thanks
>> weiguo
> 
> Thanks,
> Donald
> =============================
> Donald E. Eastlake 3rd   +1-508-333-2270 (cell)
> 155 Beaver Street, Milford, MA 01757 USA
> d3e3e3@gmail.com
> 
>> thanks
>> weiguo
>> ________________________________________
>> 发件人: Donald Eastlake [d3e3e3@gmail.com]
>> 发送时间: 2013年5月3日 10:05
>> 到: trill@ietf.org
>> 主题: [trill] Charter Revision Active-Active Item
>> 
>> Hi,
>> 
>> Item "(2) Active-Active connection at the edge of a TRILL campus.
>> (draft-ietf-trill-cmt, draft-hu-trill-pseudonode-nickname)"
>> 
>> There appeared to be agreement that work should be done in this space
>> but a better problem statement / scope was requested.
>> 
>> Comments?
>> 
>> Thanks,
>> Donald
>> =============================
>> Donald E. Eastlake 3rd   +1-508-333-2270 (cell)
>> 155 Beaver Street, Milford, MA 01757 USA
>> d3e3e3@gmail.com
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