Re: [rbridge] Call for draft-tissa-trill-cmt-00 to WG draft

Hi Hu

CMT draft discuss about backward compatibility  and your assessment of RPF failure when older RBridges present is incorrect.

Additionally I am not clear PN draft can be utilized for the scenario described in the CMT. Per the discussion we have in Taipie, most Data Centers and Enterprise have multi home devices connected to the TRILL edge. They will not let LAN Hello to pass through them because of the LAG bundling at the edge. Please refer to the reference topology in the draft. Hence CMT draft address very crucial deployment scenario.

Thanks

Tissa

From: rbridge-bounces@postel.org [mailto:rbridge-bounces@postel.org] On Behalf Of hu.fangwei@zte.com.cn
Sent: Monday, March 26, 2012 9:41 PM
To: Donald Eastlake
Cc: rbridge@postel.org; rbridge-bounces@postel.org
Subject: Re: [rbridge] Call for draft-tissa-trill-cmt-00 to WG draft

Hi,all 

We have discussed that there is back compatibility issue for CMT. Only if all the member RBridge of a virtual group support Affinity sub-tlv, the CMT can work correctly. If one of the member does't announce the virtual RBridge nickname and the Affinity sub-tlv, there may exist RPC check failure for the virtual RBridge. The issue that CMT try to solve is not an essential and key issue for trill, and CMT should be a optional solution. Some RBridges may not implement the feature. I wonder whether the CMT will does work actually because of the back compatibility issue. 

There is another solution (pseudonode nickname) solves the same issue. I suggest we should do further discussion with CMT and compare with the two solutions. 

Thanks

Donald Eastlake <d3e3e3@gmail.com> 
发件人:  rbridge-bounces@postel.org 

2012-03-27 06:38 

收件人

rbridge@postel.org 

抄送

主题

[rbridge] Call for draft-tissa-trill-cmt-00 to WG draft

During the TRILL session today, there was a consensus of those in the
room to make draft-tissa-trill-cmt-00.txt a TRILL WG draft. This is a
call on the WG mailing list to confirm that consensus. If you wish to
respond, please do so by April 10th.

Thanks,
Donald
=============================
 Donald E. Eastlake 3rd   +1-508-333-2270 (cell)
 155 Beaver Street, Milford, MA 01757 USA
 d3e3e3@gmail.com

_______________________________________________
rbridge mailing list
rbridge@postel.org
http://mailman.postel.org/mailman/listinfo/rbridge