Chapter 14 Quality of Service (QoS)
P-870HN-51D User’s Guide
174
14.5 The Class Setup Screen
Use this screen to add, edit or delete QoS classifiers. A classifier groups traffic into
data flows according to specific criteria such as the source address, destination
address, source port number, destination port number or incoming interface. For
example, you can configure a classifier to select traffic from the same protocol
port (such as Telnet) to form a flow.
You can give different priorities to traffic that the P-870HN-51D forwards out
through the WAN interface. Give high priority to voice and video to make them run
more smoothly. Similarly, give low priority to many large file downloads so that
they do not reduce the quality of other applications.
Click QoS > Class Setup to open the following screen.
Figure 90 QoS Class Setup
Weight Select the weight (from 1 to 8) of this queue.
If two queues have the same priority level, the P-870HN-51D divides the
bandwidth across the queues according to their weights. Queues with
larger weights get more bandwidth than queues with smaller weights.
Buffer
Management
This field displays Drop Tail (DT). Drop Tail (DT) is a simple queue
management algorithm that allows the P-870HN-51D buffer to accept as
many packets as it can until it is full. Once the buffer is full, new packets
that arrive are dropped until there is space in the buffer again (packets
are transmitted out of it).
Rate Limit Specify the maximum transmission rate (in Kbps) allowed for traffic on
this queue.
Back Click Back to return to the previous screen without saving.
Apply Click Apply to save your changes back to the P-870HN-51D.
Cancel Click Cancel to begin configuring this screen afresh.
Table 62 QoS Queue Setup: Add
LABEL DESCRIPTION
