H3C Technologies H3C S6300 Series Switches - Manual (Page 96)

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If you have configured data buffers in one way, delete the configuration before using the other way.
Otherwise, the new configuration does not take effect.
Tasks at a glance
Perform one of the following tasks:
• Enabling the Burst function
• Configuring data buffers manually
{
Configuring the shared-area ratio
{
Setting the maximum shared-area ratio for a queue
{
Setting the fixed-area ratio for a queue
{
Applying data buffer configuration
Enabling the Burst function
The Burst function enables the device to automatically allocate cell and packet resources. It is well suited
to the following scenarios:
• Broadcast or multicast traffic is intensive, resulting in bursts of traffic.
• Traffic enters a device from a high-speed interface and goes out of a low-speed interface, or enters
from multiple same-rate interfaces at the same time and goes out of an interface also with the same
rate.
To enable the Burst function:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enable the Burst function. burst-mode enable
By default, the Burst function is
disabled.
Configuring data buffers manually
CAUTION:
•
To avoid impact on the forwarding function of the system, do not manually change data buffer settings.
If large buffer spaces are needed, use the Burst function.
• Manually configuring data buffers might cause generic flow control and priority-based flow control
(PFC) to operate incorrectly. For more information about generic flow control and PFC, see
Layer
2—LAN Switching Configuration Guide.
The switch only supports configuring cell resources.
Configuring the shared-area ratio
Each type of resources of a buffer, packet or cell, has a fixed size. After you set the shared-area ratio for
a type of resources, the rest is automatically assigned to the fixed area.
To configure the shared-area ratio: