Hi all, We submited a draft to describe a problem that is related to operational state migration in data center.
The draft is originally posted to OPSAWG, but we also think it's related to TSV-Area as well. So we would like to invite people in TSV-Area to discuss the problem. The URL of the draft is http://tools.ietf.org/id/draft-gu-opsawg-policies-migration-00.txt VM(Virtual Machine) migration is very popular now. Virtualization and Virtual Machine (VM) migration provide Data Center with feasibility and improves the utilization of limited physical resource, e.g. switches/routers, servers and links. Meanwhile, a variety of policies (e.g. ACL, firewalls, load balancers, IPS and QoS) are deployed in Data Center to improve system security and gurantee SLA. Those polices are executed by rules configured or generated on network devices. E.g. packet filtering policies are executed by Access Control List on switches or firewalls. Another example is Load balancer (LB) who extablishes TCP/HTTP connections with external clients and balances connections among server farm. During this process, TCP state tables are dynamically generated on LB. When VM migrates, the network devices that processing and forward VM's packets may change. In order to keep VM's running serives and guanrantee security on new place, VM-relevant states, including configuration state (static policies) as well as the operational state (dynamically generated information), need to migrate with VM. In order to make deep research in this problem, we compose a solution survey draft and a gap analysis draft, you can get them from http://tools.ietf.org/id/draft-gu-opsawg-policies-migration-solution-survey-00.txt http://tools.ietf.org/id/draft-wang-opsawg-policies-migration-gap-analysis-00.txt When we wrote down the solution survey draft, we realized that part of the solution may be appropriate in TSV-Area. We have raised some discussion in OPSAWG, and get supports from several persons. If you are interested in learning the discussion, please go there and find the threads that include 'policies migration' or 'draft-gu-opsawg-policies-migration' in the titles. Any comments from you are highly appreciated. And we hope to get a time slot in IETF 81 meeting to discuss the TSV related part in TSV-Area session. Thank you very much.
