Subject: [OPSAWG] Looking forward to your comments: Survey and Gap Analysis for Policies and Dynamic Information Migration in Data Center

From: wangdanhua <[email-masked]>
Date: Thu, 30 Jun 2011 03:04:45 +0000

Hi all,

A few days ago, we sent a draft considering "policies and dynamic information migration in DC" to OPSAWG, the draft ID is "draft-gu-opsa-policies-migration-00" and its URL is http://datatracker.ietf.org/doc/draft-gu-opsa-policies-migration/ . Based on this problem statement draft as well as the discussion at the 80th IETF conference, we also performed a gap analysis between dynamic information migration (DIM) requirements and the most related IETF works. We sent a gap analysis draft to the OPSAWG, here is the URL  http://datatracker.ietf.org/doc/draft-wang-opsawg-policies-migration-gap-analysis/ . Following is the abstract of this draft. We sincerely hope that you would give your valuable comment or options if you are interest in this draft.

With the virtualization of Data Center, the number of VM explodes. VM can play different roles in Data Center, such as end-host, server, firewall, and so on. Also, VM can be migrated to any places within Data Center, even to another Data Center. Since running services shouldn't be significantly interrupted while VM migrates, VM related policies and dynamic information generated by any devices must be transferred to destination devices during a proper short period. [I.D-gu-opsa-policies-migration-00] has introduced more detail problem statement and corresponding considerations. We wish we could benefit from existing work to realize accurate dynamic information migration (DIM).  Therefore, we engaged in the investigation of related IETF works right after general requirements of DIM are defined.  Since the solution for DIM has not been decided yet, and the author can envision several kinds of solution, e.g. centralized or distributed.  It's unrealistic to enumerate all the related works for an uncertain solution.  So, in this draft, only the most related IETF work, MIDCOM protocol, has been evaluated to find out whether it can fully support DIM or which characteristics can be reused in DIM. The author would like analyze other related IETF works when the WG make further decision on DIM solution.

Following a short description of general DIM requirements, this draft presents a brief survey of MIDCOM protocol, and then lists the gap between MIDCOM and DIM requirements.  The final section presents possible working scope on the topic of DIM in IETF.

Best Regards
Danhua Wang
HuaWei Technology Co. Ltd.
Nanjing, China