HP Enterprise File Services WAN Accelerator manual Setting QoS Marking

5. Use the controls to complete the configuration, as described in the following table.

Control	Description
QoS Class	Priority. Select a priority type from the drop-down list:
	•	Real-Time. Specifies real-time traffic class. Traffic that is your highest priority should
		be given this value.
	•	Interactive. Specifies an interactive traffic class.
	•	Business Critical. Specifies the business critical traffic class.
	•	Normal Priority. Specifies normal priority traffic class.
	•	Low Priority. Specifies low priority traffic class. Traffic that is your lowest priority
		should be given this value.

Guaranteed BW. Specify the bandwidth amount that you want to guarantee for a specific class. All the classes combined cannot exceed 100%. During contention for bandwidth the class is guaranteed for the amount specified, it will receive more bandwidth if there is unused bandwidth remaining.

NOTE: The percentage of excess bandwidth given to a class is relative to the percentage of the minimum bandwidth allocated in the WAN Bandwidth for Interface field.

Upper BW. Optionally, specify the upper bandwidth limit. Specifies the maximum amount (percentage) of allowed bandwidth a flow will receive regardless of excess bandwidth available.

2 CONFIGURING THE HP EFS WAN ACCELERATOR

Setting QoS Marking

6.Click Apply to apply your settings to the running configuration. (Apply your settings to test a new configuration before saving them permanently.)

7.Click Save to save your settings permanently or click Reset to return the settings to their previous values.

You set QoS marking in the Advanced Networking - QoS Marking page.

The QoS feature allows you to enforce a DSCP level for optimized connections. The DSCP level corresponds to the DiffServ DSCP field in the IP packets header. After you map a source-destination-port pattern and a DSCP level, every packet corresponding to the connection with that destination port has the DSCP field set to that value in the forward and backward direction. On the WAN side of the HP EFS WAN Accelerator, you configure a network router or a traffic shaper to prioritize packets according to the value in the DSCP field before they are sent across the WAN.

After you map a destination port and a DSCP level, every packet corresponding to the connection with that destination port has the DSCP field set to that value in the forward and backward direction. On the WAN side of the HP EFS WAN Accelerator, you configure a network router or a traffic shaper to prioritize packets according to the value in the DSCP field before they are sent across the WAN.

Note that only the first matching mapping will be applied.

Enabling this feature is optional.

HP STORAGEWORKS EFS WAN ACCELERATOR MANAGEMENT CONSOLE USER GUIDE 87