HP StorageWorks Enterprise File Services WAN Accelerator - Manual (Page 84)

84 C ONFIGURING THE HP EFS WAN A CCELERATOR
4. Use the controls to complete the configuration, as described in the following table.
Control Description
General Enable QoS Classification. Specify this option to enable QoS.
WAN Bandwidth for Interface XXXX-X. Specify the bandwidth link rate for the WAN
interface.
This is the bottleneck WAN bandwidth not the interface speed out of the WAN interface
into the router or switch. For example, if your HP EFS WAN Accelerator connects to a
router with a 100 Mbps link, do not specify this value—specify the actual WAN
bandwidth (for example, T1, T3).
IMPORTANT: Different WAN interfaces can have different WAN bandwidths; this
value must be correctly entered for QoS to function correctly.
IMPORTANT: The percentage of excess bandwidth give to a class is relative to the
percentage of minimum bandwidth allocated to the class.
Apply. Click Apply to apply your settings to the running configuration.
Add New QoS Class Class Name. Specify a name for the QoS class.
TIP: You must enable QoS classification and set the bandwidth link rate for the WAN
interface to create a 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.
Priorities are listed in decreasing order of importance. These are minimum priority
guarantees, if better service is available it is provided. For example, if a class is specified
as Low Priority and the higher priority classes are not active, then the Low Priority
class is given the highest possible priority for the current traffic conditions.
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.
Add QoS Class. Click Add QoS Class to add a class to the QoS class list.
Remove Selected Classes. To remove an entry, click the check box next to the name and
click Remove Selected Classes.