Patton electronic CopperLink 2160 Series - Manual (Page 50)

Advanced Configuration Options 50
Model 2160 Series Getting Started Guide 4 • Web configuration
Port Based Priority
Click on QoS under Advanced on the main menu to reach the QoS advanced configuration page. Then, select
the radio button for Port Based Priority to display the configuration options.
Figure 23. QoS - Port Based Priority page
In the Port Based Priority table, select the ports that the port-based priority rule should be applied. There six
ports to choose from: LAN1, LAN2, LAN3, LAN4, line and Sniffing.
In the Scheduling Configuration section, you can set up the Queue type from type 0 to type 3. Each Queue
type can setu p the queue Weight from 1 to 15.
The Queuing method is used to configure queuing algorithms for outgoing traffic. Queuing algorithms allows
the Model 2160 to maintain separate queues for packets from each individual source or flow and prevent a
source from monopolizing the bandwidth.
The Queue types are Weight Round Robin (WRR), Best Effort (BE), and Strictly Priority (SP).
• WRR services on a rotating basis and is activated only when a port has more traffic than it can handle. A
queue is a given an amount of bandwidth irrespective of the incoming traffic on that port. The queue then
moves to the back of the list. The next queue is given an equal amount of bandwidth, and then moves to the
end of the list, and so on, depending on the number of queues being used, This works in a looping fashion
until a queue is empty.
• BE is used for data applications or any non-classified traffic. This would include e-mail, Internet browsing,
data back-up etc. The BE class is for traffic that can afford to wait and not affect the overall outcome of the
data application.
• SP services queues based on priority only. As traffic comes into the Model 2160, traffic on the highest prior-
ity queue, Q3 is transmitted first. When that queue empties, traffic on the next highest-priority queue, Q2
transmitted until Q2 empties, and then traffic is transmitted on Q1 and so on. If higher priority queues
never empty, then traffic on lower priority never gets sent. The SP class is typically for video applications
that require a fixed amount of bandwidth to be considered good quality.