TP-Link T1500-28PCT TL-SL2428P T1500-28PCT V1 User Guide - Page 112

Schedule Mode, Priority Level, Schedule Mode, Configuration procedure, Operation, Description

Page 112 highlights

 Priority Le v e l DSCP: Priority Le v e l: Indicates the priority determined by the DS region of IP datagram. It ranges from 0 to 63. Indicates the priority level the packets with tag are mapped to. The priority levels are labeled as TC0, TC1, TC2 and TC3. Note : To complete QoS function configuration, you have to go to the Schedule Mode page to select a schedule mode after the configuration is finished on this page. Configuration procedure: Step Operation De scription 1 Log on to the DSCP Priority page 2 Enable DP priority function Required. By default, the DSCP priority function is disabled. 3 Map the DSCP priority to the Required. Select DSCP priority and the priority level corresponding priority level. 4 Select a schedule mode Required. Log on to the Schedule Mode page to select a schedule mode. 9.1.4 Schedule Mode On this page you can select a schedule mode for the switch. When the network is congested, the problem that many packets compete for resources must be solved, usually in the way of queue scheduling. The switch will control the forwarding sequence of the packets according to the priority queues and scheduling algorithms you set. On this switch, the priority levels are labeled as TC0, TC1... TC3. Choose the menu QoS→DiffServ→Schedule Mode to load the following page. Figure 9-9 Schedule Mode The following entries are displayed on this screen:  Schedule Mode Config SP-M ode : WRR-M ode : Strict-Priority Mode. In this mode, the queue with higher priority will occupy the whole bandwidth. Packets in the queue with lower priority are sent only when the queue with higher priority is empty. Weight Round Robin Mode. In this mode, packets in all the queues are sent in order based on the weight value for each queue. The weight value ratio of TC0, TC1, TC2 and TC3 is 1:2:4:8. 104

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104
Priority Level
DSCP:
Indicates the priority determined by the DS region of IP datagram.
It ranges from 0 to 63.
Priority Level:
Indicates the priority level the packets with tag are mapped to. The
priority levels are labeled as TC0, TC1, TC2 and TC3.
Note:
To complete QoS function configuration, you have to go to the
Schedule Mode
page to select a
schedule mode after the configuration is finished on this page.
Configuration procedure:
Step
Operation
Description
1
Log on to the
DSCP Priority
page
2
Enable DP priority function
Required. By default, the DSCP priority function is
disabled.
3
Map the DSCP priority to the
priority level
Required.
Select
DSCP
priority
and
the
corresponding priority level.
4
Select a schedule mode
Required. Log on to the
Schedule Mode
page to
select a schedule mode.
9.1.4 Schedule Mode
On this page you can select a schedule mode for the switch. When the network is congested, the
problem that many packets compete for resources must be solved, usually in the way of queue
scheduling. The switch will control the forwarding sequence of the packets according to the priority
queues and scheduling algorithms you set. On this switch, the priority levels are labeled as TC0,
TC1… TC3.
Choose the menu
QoS
DiffServ
Schedule Mode
to load the following page.
Figure 9-9 Schedule Mode
The following entries are displayed on this screen:
Schedule Mode Config
SP-Mode:
Strict-Priority Mode. In this mode, the queue with higher priority
will occupy the whole bandwidth. Packets in the queue with lower
priority are sent only when the queue with higher priority is empty.
WRR-Mode:
Weight Round Robin Mode. In this mode, packets in all the
queues are sent in order based on the weight value for each
queue. The weight value ratio of TC0, TC1, TC2 and TC3 is
1:2:4:8.