QOS - diff between nbar protocol discovery and auto qos

Unanswered Question
May 1st, 2007


Does anyone know when one would use

ip nbar protocol-discovery vs.

auto discovery qos

Thanks, any help appreciated.


I have this problem too.
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mohammedmahmoud Sat, 05/05/2007 - 07:15


Actually both are totally different than each other:

The AutoQoS for the Enterprise feature automates the deployment of quality of service (QoS) policies in a general business environment, particularly for midsize companies and branch offices of larger companies.

The key benefits of the AutoQoS for the Enterprise feature include the following:

?Customers can implement the QoS features required for voice, video, and data traffic without an in-depth knowledge of the following underlying technologies:


?Frame Relay


?Service policies

?Link efficiency mechanisms (LEM), such as Link Fragmentation and Interleaving (LFI)

?The AutoQoS for the Enterprise feature simplifies QoS implementation and speeds up the provisioning of QoS technology over a Cisco network. It reduces human error and lowers training costs.

?The AutoQoS for the Enterprise feature creates class maps and policy maps on the basis of Cisco experience and "best practices" methodology.

?Customers can also use existing Cisco IOS commands to modify the configurations, automatically generated by the AutoQoS for the Enterprise feature, as needed to meet specific requirements.


While Network Based Application Recognition (NBAR) is an important component of the Cisco Content Networking architecture, is a new classification engine in Cisco IOS? Software that can recognize a wide variety of applications, including Web-based applications and client/server applications that dynamically assign TCP or User Datagram Protocol (UDP) port numbers. After the application is recognized, the network can invoke specific services for that particular application. NBAR currently works with quality-of-service (QoS) features to help ensure that the network bandwidth is best used to fulfill your business objectives.


HTH, please do rate if it does help,

Mohammed Mahmoud.


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