T3700G-28TQ
JetStream 28-Port Gigabit Stackable L3 Managed Switch CLI Guide
183
Command Mode
Global Configuration Mode
User Guidelines
1. By default, the mapping relation between tag and the CoS Priority is:
(0-7)-CoS0, (8-15)-CoS1, (16-23)-CoS2, (24-31)-CoS3, (32-39)-
CoS4, (40-47)-CoS5, (48-55)-CoS6, (56-63)-CoS7.
2. Among the priority levels CoS0-CoS7, the bigger value, the
higher priority.
Example
Map DSCP values 10-12 to CoS 2:
T3700G-28TQ(config)#qos queue dscp-map 10-12 2
qos queue mode
Description
The qos queue mode command is used to configure the Schedule Mode. To
return to the default configuration, please use no qos queue mode command.
When the network is congested, the program that many packets complete 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,TC2 … TC7.
Syntax
qos queue mode { sp | wrr | sp+wrr | equ }
no qos queue mode
Parameter
sp —— 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 —— 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, TC3, TC4, TC5,TC6 andTC7 is 1:2:4:8:16:32:64:128.
sp+wrr —— Strict-Priority + Weight Round Robin Mode. In this mode, the
switch provides two scheduling groups, SP group and WRR group. Queues in
SP group and WRR group are scheduled strictly based on Strict-Priority mode
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