Implementing Cisco Enterprise Wireless Networks - QoS Configuration for Jabber

QoS Configuration for Jabber

Question

A company has a single WLAN configured for 802.1x authentication with the QoS set to Silver.

This WLAN supports all corporate and BYOD access.

A decision has been made to allow users to install Cisco Jabber on their personal mobile devices.

Users report poor voice quality when using Jabber.

QoS is being applied only as best effort.

What must be configured to ensure that the WLAN remains on the Silver class and to ensure Platinum class for Jabber?

Answers

Explanations

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A. B. C. D.

D.

To ensure high-quality voice and video traffic for Jabber users, the WLAN needs to be configured with proper QoS settings. In this scenario, the WLAN is currently set to Silver class, which is a best effort QoS setting. To ensure that the WLAN remains on the Silver class for all traffic except Jabber traffic, and to ensure Platinum class for Jabber, the following steps can be taken:

Step 1: Configure an AVC profile for Jabber traffic

AVC (Application Visibility and Control) is a feature that allows network administrators to identify and prioritize traffic based on the specific applications that are being used. By configuring an AVC profile for Jabber traffic, the WLAN can identify this traffic and apply the appropriate QoS settings. The AVC profile can be configured to set the Jabber traffic to Platinum class.

Step 2: Apply the AVC profile to the WLAN

Once the AVC profile has been configured, it needs to be applied to the WLAN. This will ensure that all Jabber traffic is identified and prioritized accordingly.

Step 3: Ensure proper QoS settings for the WLAN

To ensure that the WLAN remains on the Silver class for all other traffic except Jabber traffic, the QoS settings for the WLAN need to be configured properly. This can be done by setting the WLAN's QoS to Silver and applying the appropriate settings for this class.

Overall, the correct answer is D, which involves configuring an AVC profile for Jabber traffic and applying it to the WLAN. By doing so, the WLAN can prioritize Jabber traffic with Platinum class QoS while maintaining Silver class for all other traffic. Option A is not a feasible solution since it is not practical to configure QoS on all mobile devices with Jabber installed. Option B is also not relevant to the issue at hand. Option C is not an appropriate solution since limiting the WLAN to 5 GHz radios will not necessarily improve QoS for Jabber traffic.