buffer queue shared
Use buffer queue shared to set the maximum shared-area ratio for a queue.
Use undo buffer queue shared to restore the default.
Syntax
buffer egress [ slot slot-number ] cell queue queue-id shared ratio ratio-value
undo buffer egress [ slot slot-number ] cell queue queue-id shared
Default
The maximum shared-area ratio for a queue is 33%.
Views
System view
Predefined user roles
network-admin
Parameters
egress: Specifies the egress buffer.
slot slot-number: Specifies an IRF member device by its member ID (slot number). If you do not specify an IRF member device, this command applies to all IRF member devices.
cell: Specifies cell resources.
queue-id: Specifies a queue by its ID in the range of 0 to 7.
ratio ratio-value: Specifies the maximum shared-area ratio in percentage.
Usage guidelines
By default, all queues have an equal share of the shared area. You can set the shared-area ratio for a queue. The unconfigured queues use the default setting. The shared-area ratio for each queue is finally determined by the chip based on your configuration and the number of packets to be sent.
For the maximum shared-area ratio for a queue, the percentage values 0 to 100 are divided into 10 ranges. Table 42 shows the effective values that correspond to the configured values of ratio-value.
Table 42: Mapping between configured values of ratio-value and effective values
Configured value of ratio-value | Effective value |
|---|---|
0 to 1 | 1 |
2 to 3 | 3 |
4 to 7 | 6 |
8 to 16 | 11 |
17 to 29 | 20 |
30 to 42 | 33 |
43 to 60 | 50 |
61 to 76 | 67 |
77 to 86 | 80 |
87 to 100 | 89 |
Examples
# Configure queue 0 to use up to 5% shared-area space of cell resources in the egress buffer of IRF member device 2.
<Sysname> system-view [Sysname] buffer egress slot 2 cell queue 0 shared ratio 5