qos dynamic-buffer max-maximum
Function
The qos dynamic-buffer max-maximum command configures the maximum buffer size of a queue for which dynamic buffer adjustment is enabled.
The undo qos dynamic-buffer max-maximum command restores the default maximum buffer size of a queue for which dynamic buffer adjustment is enabled.
By default, the maximum buffer size of a queue for which dynamic buffer adjustment is enabled is 320 cells. The size of a cell is 128 bytes.
This command is available only on the following switch models:
S5735-L, S5735S-L, S5735S-L-M, S5735-S, S5735-S-I, and S5735S-S
Parameters
Parameter |
Description |
Value |
|---|---|---|
max-maximum |
Specifies the maximum buffer size of a queue for which dynamic buffer adjustment is enabled. |
The value is an integer in the range from 10 to 3500, in cells. The size of a cell is 128 bytes. |
Usage Guidelines
Usage Scenario
If congestion occurs, the switch uses the tail drop method. When the queue length reaches the upper limit, excess packets (buffered at the queue tail) are discarded until congestion is removed. You can run the qos dynamic-buffer enable command to enable dynamic queue buffer adjustment. This ensures that a queue has sufficient buffer space, preventing packets from being discarded. You can run the qos dynamic-buffer max-maximum command to configure the maximum buffer size of a queue for which dynamic buffer adjustment is enabled.
Precautions
This command takes effect only after the qos dynamic-buffer enable command is run to enable dynamic queue buffer adjustment.