Casio ISA550WBUN3K9 Configuring LAN Queue Settings, Configuring LAN QoS Classification Methods

Networking	4
Configuring Quality of Service

Configuring LAN Queue Settings

Use the Queue Settings page to configure whether traffic scheduling on Ethernet interfaces is based on either SP or WRR, or the combination of the two. The security appliance supports four queues for LAN traffic, Q1 to Q4.

STEP 1 Click Networking > QoS > LAN QoS > Queue Settings.

STEP 2 Specify how to determine LAN traffic in queues.

•Strict Priority (SP): Indicates that traffic scheduling for the selected queue is based strictly on the queue priority.

•Weighted Round Robin (WRR): Indicates that traffic scheduling for the selected queue is based strictly on the WRR weights. If WRR is selected, the predefined weights 8, 4, 2 and 1 are assigned to queues 1, 2, 3 and 4 respectively.

•SP and WRR: Integrates the SP and WRR queues. It applies SP to Q1 and WRR to other queues (Q2 to Q4). If you choose SP+WRR, the PQ is assigned to Q1 and the predefined weights 4, 2 and 1 are assigned to Q2, Q3, and Q4 respectively. There is no limit for PQ, indicating that WRR queues may be starved if PQ is always sending traffic greater than the maximum bandwidth of the LAN ports.

STEP 3 If needed, enter the description for each queue in the field in the Queue Description column.

STEP 4 Click Save to apply your settings.

Configuring LAN QoS Classification Methods

Traffic Classification is used to classify traffic through the LAN interfaces to a given traffic class so that traffic in need of management can be identified.

STEP 1 Click Networking > QoS > LAN QoS > Classification Methods.

STEP 2 Depending on your networking design, choose either Differentiated Services Code Point (DSCP) or Class of Service (CoS) remarking method for traffic through all LAN interfaces. When you choose DSCP as the classification method, the Mapping CoS to LAN Queue feature will be grayed out. In this case, the mapping relationship between LAN queues and CoS is defined as follows:

Cisco ISA500 Series Integrated Security Appliances Administration Guide 167