Dynamic Service Chaining for Service Providers

The networking and telecommunications industries have begun to incorporate virtualization technology in ways similar to data centers. Adopting principles outlined by network functions virtualization (NFV), network functions are being consolidated onto standard, high-volume servers, switches, and storage in order to increase flexibility, equipment utilization, and operating efficiency. Since networks functions are easily co-located on the same hardware platforms, combining services, as needed for dynamic service chaining, is more straightforward.

Challenge

  • Dynamically optimize number and sequence (chain) of service functions needed to process network traffic

Solution

  • Qosmos Service Aware Module® (Qosmos SAM®) integrated with virtual switch is used as a Service Classifier relying on a packet tagging process to convey App ID and metadata
  • To facilitate sharing, application-ID and metadata can be placed either in packet headers (i.e., a proposed IETF contribution is named NSH for Network Service Header), or in flow tables being accessible through specific APIs or through initiatives using tagging/labeling, specific tunneling

Benefits

  • Efficient and dynamic service chaining based on tag processing
  • Optimized DPI function, since all VMs requiring service information benefit from IP tagging done only once and in a consistent way
  • Global resource optimization and CAPEX savings (consolidation of DPI technology)
  • Chained services using DPI run more efficiently, enabling higher cost/performance ratios

Serv_Chaining_Diagram

“Qosmos has been the gold standard for embedded DPI and related applications. With their recent work in NFV, they’re leading the market into the critical area of DPI as a service, and facilitating the integration of SDN and NFV into a common and more compelling revolution in networking.”

Tom Nolle

President, CIMI Corporation