Subject: [core] draft-fang-core-coap-pubsub-failure-detection-00.txt

From: Luyuan Fang <[email-masked]>
Date: Mon, 28 Mar 2016 02:22:49 +0000

Hi all,

I posted draft-fang-core-coap-pubsub-failure-detection-00.txt. 
http://tools.ietf.org/html/draft-fang-core-coap-pubsub-failure-detection-00.html

Some of the characteristics of CoAP make it a great candidate for fast failure detection of network element in the hyper-scale datacenter and cloud. 

The existing draft-koster-core-coap-pubsub-04 is proposing extensions to CoAP to support the pub/sub paradigm, which would make CoAP even more attractive for our purposes.

In our draft, we propose two additional extensions that would be very useful in the fault detection use case, and for other use cases as well. The first extension is the addition of Last Will Testament (LWT) functionality. We believe LWT is an extremely useful concept that goes hand-in-hand with the pub/sub paradigm, and is ideally designed for the fault detection use case. The second extension that we propose is functionality to address the Single Point of Failure issue of the broker in the pub/sub paradigm. Clearly, this issue requires an effective solution in order to make CoAP with pub/sub extension suitable for fault detection.

This draft provides the background of the problem we are trying to solve, and an initial proposal for the extensions. 

As cloud providers, we have an urgent need to find lightweight solutions to simplify, expedite, and improve fault detection in our network. We believe CoAP can become an important ingredient to solve this crucial issue for our business. Our immediate purpose with this draft is to get the discussion going in the mailing list before IETF 95 meeting, and we are very interested in working with others in the WG to rapidly progress this important topic. 

Thanks,
Luyuan