Port Queue Management

Through configuring the port queue management function, the Web LCT can enable the flow control function according to the algorithms at the Ethernet source port.

Navigation Path

In the NE Explorer, select a board or an NE and choose Configuration > QoS Management > Port Queue Management from the navigation tree.

Parameter Description

Parameter	Value	Description
Port	For example: Port 3	Indicates the port requiring flow control.
Port Queue	For example: 1	Indicates the port queue that can be configured.
Queue Scheduling Mode	WRR, SP	Indicates the queue scheduling mode. If this parameter is set to SP, the SP algorithm is used for the service grooming on egress ports. The higher is the priority of the CoS corresponding to the queue, the higher is the priority of the queue. If this parameter is set to WRR. The WRR grooming algorithm divides each port into several egress queues and grooms the packets in these queues in turn. This algorithm ensures that every queue obtains a certain period of service.
Queue Weight	1 to 127	Indicates the weight of the queue.

**Table 1** Parameters required for port queue shaping
Parameter	Value	Description
Port	For example: Port5	Selects the port requiring flow control.
Port Queue	For example: 1	Displays the port queue that can be configured.
Status	Enabled, Disabled	Sets whether to enable the port alignment.
CIR(kbit/s)	Values of parameters vary with different boards and products.	Indicates the bandwidth that can be guaranteed of the sink port.
DCBS(kbyte)	Values of parameters vary with different boards and products.	Indicates the buffer capacity of the sink port.
PIR(kbit/s)	Values of parameters vary with different boards and products.	Indicates the peak bandwidth.
DMBS(kbyte)	Values of parameters vary with different boards and products.	Indicates the buffer capacity of the CBS.

**Table 2** Parameters required for queue buffering
Parameter	Value	Description
Port Queue	For example: 1	Indicates the port queue that can be configured.
Reserved Size(128 byte)	0-200 Default: 36	Indicates the minimum reserved value of each queue. NOTE: When scheduling packets, the port queue needs to buffer unprocessed ones. The unprocessed packets can use the fixed reserved buffer or the shared buffer.
Shared Size(128 byte)	0-3000 Default: 1564	Indicates the maximum sharing threshold of each queue. NOTE: When scheduling packets, the port queue needs to buffer unprocessed ones. The unprocessed packets can use the fixed reserved buffer or the shared buffer.