Configuring Data Buffers Manually; Configuring The Total Shared-Area Ratio; Setting The Maximum Shared-Area Ratio For A Queue - HP 6125XLG Configuration Manual

Configuring data buffers manually

CAUTION:
Do not manually change data buffer settings in normal cases to avoid impact to the system. If large buffer
spaces are needed, use the Burst function.
When you manually configure data buffers, flow control and priority-based flow control (PFC) might fail
to operate correctly. For more information about flow control and PFC, see Layer 2—LAN Switching
Configuration Guide.
The switch only supports configuring cell resources.

Configuring the total shared-area ratio

Cell resources of a buffer have a fixed size. After you set the total shared-area ratio for cell resources, the
rest is automatically assigned to the fixed area.
To configure the total shared-area ratio:
Step
1. Enter system view.
2. Configure the total
shared-area ratio.

Setting the maximum shared-area ratio for a queue

By default, all queues have the same maximum ratio 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 final
shared-area ratio for each queue is determined by the chip based on the buffer queue shared command
configuration and the number of packets to be sent.
To set the maximum shared-area ratio for a queue:
Step
1. Enter system view.
2. Set the maximum shared-area
ratio for a queue.
For the maximum shared-area ratio for a queue, the percentage values 0 to 100 are divided into 10
ranges. Table 7
Table 7 Mapping between values of
Value of ratio-value
0 to 1
2 to 3
4 to 7
Command
system-view
buffer egress [ slot slot-number ] cell
total-shared ratio ratio-value
Command
system-view
buffer egress [ slot slot-number ] cell queue
queue-id shared ratio ratio-value
shows the effective values that correspond to the values of ratio-value.
ratio-value
and effective values
Effective value
1
3
6
82
Remarks
N/A
The default setting is
100% of the buffer.
Remarks
N/A
The default setting is 33%
for all queues.