HP Network Direr Software Products manual Application Field Values

Components 637

3Com Network Director configures devices that are capable of performing complex application classification to identify traffic as belonging to an application by creating classifier rules. These classifier rules are equivalent to the classifier rules that make up the definition in the wizard. Traffic that matches these classifier rules is also mapped to the Business Critical service level. See “3Com Network Director Service Levels” on page 655 for definitions of the service levels used by 3Com Network Director.

When you are configuring 3Com devices that are not capable of complex application classification, 3Com Network Director configures these devices to identify traffic with the Business Critical DiffServ codepoint. Traffic that matches this classifier rule is also mapped to the Business Critical service level.

■Blocked Applications — selecting an application for blocking causes traffic identified as belonging to that application to be dropped. Not all devices are capable of dropping application traffic. A device must be capable of both complex application classification and of dropping traffic as a result of classification in order to drop application traffic. 3Com Network Director configures such devices to identify traffic as belonging to an application by creating classifier rules. These classifier rules are equivalent to the classifier rules that make up the definition in the wizard. Traffic that matches these classifier rules is mapped to the Drop service level. See “3Com Network Director Service Levels” on page 655 for definitions of the service levels used by 3Com Network Director.

3Com Network Director imposes restrictions on the blocking of SNMP traffic. In addition, there are various problems that may arise due to selecting applications for blocking. For more information see “Potential Hazards of Blocking Application Traffic” on page 661.

If you prioritize traffic to and from a server then that server will also be able to use any applications that are blocked.

Application Field Values

Application traffic is identified by examining certain fields in the packets to see if they contain specific values. If you wish to add an application that is not present in the list you will need to know the appropriate field values required for that application.