Friday, November 25, 2011

Alcatel Lucent 7750 DPI Technology

A recent post to ALU's Techzine blog by Aleksandar Pavlovic (pictured), Senior Marketing Manager for Wireless, provides some information on the applications identification (DPI) technology of the vendor's 7750 Service Routers Mobile Gateway.

See also "ALU Positions the 7750-SR as a DPI based Mobile Application Assurance Gateway" - here).

"Application identification is made on positive matching between a traffic flow and a locally kept database of application signatures. The detection of applications is further facilitated and made more manageable by the use of application filters, which can be customized to define the use of protocol signatures and other criteria that define an application"

The following criteria can be assigned to an application rule filter entry:
  • Protocol signature
  • String-based matching: For Hypertext Transfer Protocol (HTTP), Wireless Application Protocol (WAP), Session Initiation Protocol (SIP) and Transport Layer Security (TLS)
  • Flow setup detection
  • Network IP address
  • Network port number
  • IP protocol number
  • Unique application name
  • Unique entry ID number
Network applications of interest are identified and managed by MSPs using a very structured approach. This allows:
  • Quick and easy configuration
  • Applications to be organized into groups
  • Customization of application filters and associated policy actions
See "Mobile Application Assurance" - here.

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