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From Sateesh Chodapuneedi <sateesh.chodapune...@citrix.com>
Subject [ASF41][DISCUSS] Adding support for VMware dvSwitch
Date Mon, 17 Dec 2012 19:40:55 GMT
Hi,



I am planning to work on enabling support for VMware native dvSwitch in CloudStack. Filed
a jira ticket for it, see [1].



Integration of VMware dvSwitch with CloudStack enables orchestration of virtual networks in
VMware environment over distributed virtual switch inside vCenter.



Background

-----------

VMware Distributed Switch is an aggregation of per-host virtual switches presented and controlled
as a single distributed switch through vCenter Server at the Datacenter level. vDS abstracts
configuration of individual virtual switches and enables centralized provisioning, administration,
and monitoring.

vDS is integral component of vCenter. Hence the native vDS support makes sense for wider and
larger deployments of Cloudstack over vSphere.



Each Standard vSwitch represents an independent point of configuration that needs to be managed
and monitored. The management of virtual networks required by instances in the cloud is tedious
when virtual networks have to span across large number of hosts. Using distributed vSwitch
(vDS) simplifies the configuration and monitoring.



Being standalone implementations, standard vSwitches do not provide any support for virtual
machine mobility. So there needed a component  to ensure that the network configurations on
the source and the destination virtual switch are consistent and will allow the VM to operate
without breaking connectivity or network policies. Particularly during migration of VM across
hosts, the sync up among peers need to be taken care.  However in case of distributed vSwitch
during VMotion, the vCenter server, would update the vSwitch modules on the hosts in cluster
accordingly.



I'll share an FS for this in the next few days.

Please do let me know your thoughts/concerns.



[1] CLOUDSTACK-657 - "VMware vNetwork Distributed Virtual Switch support in CloudStack"



Regards,

Sateesh






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