Re: [trill] Any comments on Coordinated Multicast Trees (CMT) for TRILL - draft-ietf-trill-cmt-00

Sunny Rajagopalan <sunny.rajagopalan@us.ibm.com> Fri, 17 August 2012 17:50 UTC

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Subject: Re: [trill] Any comments on Coordinated Multicast Trees (CMT) for TRILL - draft-ietf-trill-cmt-00
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Are the authors of this draft planning to respond to these comments at 
all? A protocol spec that doesn't talk about what to do on link failure is 
incomplete, to say the least.



From:   Sunny Rajagopalan/Santa Clara/IBM@IBMUS
To:     Erik Nordmark <nordmark@acm.org>
Cc:     trill-bounces@ietf.org, "trill@ietf.org" <trill@ietf.org>
Date:   08/15/2012 03:28 PM
Subject:        Re: [trill] Any comments on Coordinated Multicast Trees 
(CMT) for TRILL - draft-ietf-trill-cmt-00
Sent by:        trill-bounces@ietf.org



I had sent out comments on this a while back, and none of them have been 
addressed. 
To summarize the issues: 
1) What happens when one of the CE-rbridge links fails? The draft doesn't 
talk about this scenario. I listed the possible solutions in my earlier 
email; are the authors planning to adopt one of them, or do they have 
another fix in mind? 

2) The solution doesn't work if the CE switches are interconnected, but 
this is but this is not documented in the draft. What happens if they get 
interconnected accidentally? What is the process for recovery? This needs 
to be discussed in the draft. 
More details here: 
http://www.ietf.org/mail-archive/web/trill/current/msg04984.html 




From:        Erik Nordmark <nordmark@acm.org> 
To:        "trill@ietf.org" <trill@ietf.org> 
Date:        08/15/2012 03:14 PM 
Subject:        [trill] Any comments on Coordinated Multicast Trees (CMT) 
for TRILL        - draft-ietf-trill-cmt-00 
Sent by:        trill-bounces@ietf.org 




We are trying to understand if this document is getting close to WG last 
call, but we don't know how many have read the document.

If you have reviewed the document, please let us know.
If not, this might be a good time to review the document and provide 
comments.

Thanks,
   Erik and Donald
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