Enables DPI application recognition logging. It also sets the logging level.

DPI analyzes packet and packet content headers to determine the nature of network traffic. When enabled, the Purview™ DPI engine inspects layer 7 traffic to identify applications (such as, Netflix, Twitter, Facebook, etc.) and extract metadata (such as, host name, server name, TCP-RTT, etc.) for further use by the WiNG firewall.

Supported in the following platforms:

  • Access Points — AP505i, AP510i/e, AP560i/h


Purview DPI engine is not supported on the WiNG 7.1.2 enabled NX5500, NX7500, NX9500, NX9600 and VX9000 platforms. This support will be introduced in future releases.


logging [level|on]
logging on
logging level [<0-7>|alerts|critical|debugging|emergencies|errors|informational|


logging on
logging on Enables logging of application recognition hits made by the Purview™ DPI engine. This option is disabled by default.
logging level [<0-7>|alerts|critical|debugging|emergencies|errors|informational|
logging level [<0-7>|alerts| critical|debugging| emergencies|errors| informational| notifications| warnings] Sets the logging level for application recognition hits made by the Purview™ DPI engine. This option is disabled by default.
  • <0-7> – Sets the message logging severity level on a scale of 0 - 7
  • emergencies – Severity level 0: System is unusable
  • alerts – Severity level 1: Requires immediate action
  • critical – Severity level 2: Critical conditions
  • errors – Severity level 3: Error conditions
  • warnings – Severity level 4: Warning conditions
  • notifications – Severity level 5: Normal but significant conditions (this is the default setting)
  • informational – Severity level 6: Informational messages
  • debugging – Severity level 7: Debugging messages


nx9500-6C8809(config-purview-app-policy-Bing)#logging level critical
nx9500-6C8809(config-purview-app-policy-Bing)#show context
purview-application-policy Bing
 description "This application policy allows Bing search engine packets"
 enforcement-time days weekdays start-time 12:30 end-time 20:00
 allow application Bing precedence 1
 allow app-category business precedence 2
 deny app-category "social networking" precedence 3
 logging level critical

Related Commands

no Resets the logging level to default (notifications). And the no → logging → on command disables DPI logging.