H3C Technologies H3C S6300 Series Switches - Manual (Page 97)

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Step Command Remarks
1. Enter system view. system-view N/A
2. Configure the shared-area
ratio.
buffer egress [ slot slot-number ] cell
total-shared ratio ratio-value The default setting is 84%
of the buffer.
Setting the maximum shared-area ratio for a queue
By default, all queues have an equal share of the shared area. This task allows you to change the
maximum shared-area ratio for a specific queue. The other queues use the default setting.
The actual maximum shared-area ratio for each queue is finally determined by the chip based on your
configuration and the number of packets to be sent.
To set the maximum shared-area ratio for a queue:
Step Command Remarks
1. Enter system view. system-view N/A
2. Set the maximum shared-area
ratio for a queue. buffer egress [ slot slot-number ] cell queue
queue-id shared ratio ratio-value The default setting is 33%
for each queue.
For the maximum shared-area ratio for a queue, the percentage values 0 to 100 are divided into 10
ranges. Table 12 shows the effective values that correspond to the configured values of ratio-value.
Table 12 Mapping between values of ratio-value and effective values
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
89 to 100 89
Setting the fixed-area ratio for a queue
By default, all queues have an equal share of the fixed area. This task allows you to change the fixed-area
ratio for a specific queue. After you configure the fixed-area ratios for some queues, the other queues
each are assigned an equal share of the remaining part of the fixed area. The display buffer queue
command displays a rounded-off value for the assignment result. Therefore, the sum of the ratios for all
queues might be less than or greater than 100%.