Among other things, the global provider of converged IP network test technologies observed that the virtualized servers in next-generation data centers will generate more traffic than 10 gigabits per second (Gbps) connections can handle. And the rising prevalence of distributed denial of service attacks means that enterprises will need to deploy unified threat management devices.

Cloud providers will need to verify that their infrastructures are ready to offer high availability for all customers -- and at different quality-of-service levels for various tiers of service. Other network testing challenges highlighted by Ixia include the ongoing wireless transition to 4G LTE as well as the need to ensure the coexistence of IPv6 and IPv4 Internet address blocks within the enterprise space.

"The competitive pressure placed on network equipment manufacturers (NEMs), service providers, and enterprises to satisfy the ever-changing, ever-increasing requirements of end-users drives new network technologies and deployments," said Ixia CEO Atul Bhatnagar.

Peaceful Coexistence

Last February, the Internet Assigned Numbers Authority allocated the last freely available block of IPv4 addresses. Unfortunately, the new IPv6 address blocks are not backward compatible with IPv4.

"The vast majority of the world's Internet content is addressable via IPv4," said Michael Howard, a principal analyst at Infonetics Research. "It's clear that the IPv4-to-IPv6 transition will be a long but very manageable process."

Still, the peaceful coexistence of IPv6 and IPv4 on the Internet means that IPv4 hosts and routers also must be able to run without modification and still be able to communicate with both IPv4 and IPv6 nodes. So in advance of rolling out IPv6 on their corporate networks in the second half of 2012, IT managers will need to conduct private and public tests to ensure this evolution is transparent to all networks users, Ixia said. (continued...)

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