Functions and Limitations of Network Services Virtualization Tools

As virtualization continues to push the limits of the infrastructure and the tools that control and manage the devices, Cloud Computing Journal looks at the functions and limitations of existing tool categories.

“In traditional infrastructure delivery models the network is constructed to connect everything together using a generally open access model judiciously layered with security applied at various levels via firewalls, VLANs, ACLs and user authentication enforced at both end points (network access and application).

“In the emerging world of cloud and virtualization this traditional model has been overwhelmed as datacenter services (servers, storage and applications) are now as transient as the users on the network. Access and security models have to be adjusted as frequently as users move around the network or virtual machines are created, moved or destroyed. Support teams are being overloaded by demand, and the existing network management tools they have available have not been designed to deal effectively with this volume or type of network change. Existing management tools have simply reached their limits.”

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