(Optional) Configuring the Data Buffer
Context
The data buffer caches packets to be sent from an interface to prevent packet loss upon traffic bursts. When the data buffer is full, the device does not cache packets and directly discards packets not entering the buffer. You can adjust the buffering capacity of interface queues to improve the forwarding performance.
For the CE12800, the burst traffic buffer mode and queue length of an interface can be configured.
For the CE12800E, the burst traffic buffer mode can be configured for the device or interfaces. It cannot be configured for both the device and interface.
Procedure
- (For the CE12800) Configure a burst traffic buffer mode on the device.
- Run qos burst-mode { enhanced | low-latency }
A burst traffic buffer mode is configured on the device.
By default, the switch uses the standard mode.
If this command and the qos queue length command are both configured, the qos queue length command takes effect.
- Run qos burst-mode { enhanced | low-latency }
- (For the CE12800E configured with ED-E, EG-E, and EGA-E series cards) Configure a burst traffic buffer mode on the device.
- Run qos burst-mode enhanced
A burst traffic buffer mode is configured on the device.
By default, the switch uses the standard mode.
If this command and the qos queue length command are both configured, the qos queue length command takes effect.
- Run qos burst-mode enhanced
- (For the CE12800E configured with FD-X series cards) Configure a burst traffic buffer mode on the device.
- Run low-latency fabric
The low-latency network function is enabled and the low-latency network view is displayed.
By default, the low-latency network function is disabled.
After running this command, you need to save the configuration and restart the device to make the configuration take effect. You can restart the device immediately or after all the configurations are complete.
- Run undo qos buffer auto-configuration enable
Automatic buffer optimization of lossless queues is disabled.
By default, automatic buffer optimization of lossless queues is disabled.
After running this command, you need to save the configuration and restart the device to make the configuration take effect. You can restart the device immediately or after all the configurations are complete.
- Run qos burst-mode { enhanced | shared } slot slot-id
A burst traffic buffer mode is configured on the device.
By default, the switch uses the standard mode.
If this command and the qos queue length command are both configured, the qos queue length command takes effect.
- Run low-latency fabric
- (For CE12800E configured with ED-E, EG-E, and EGA-E series cards) Configure a burst traffic buffer mode on an interface.
- (For CE12800E configured with FD-X series cards) Configure a burst traffic buffer mode on an interface.
- Run low-latency fabric
The low-latency network function is enabled and the low-latency network view is displayed.
By default, the low-latency network function is disabled.
After running this command, you need to save the configuration and restart the device to make the configuration take effect. You can restart the device immediately or after all the configurations are complete.
- Run undo qos buffer auto-configuration enable
Automatic buffer optimization of lossless queues is disabled.
By default, automatic buffer optimization of lossless queues is disabled.
After running this command, you need to save the configuration and restart the device to make the configuration take effect. You can restart the device immediately or after all the configurations are complete.
- Run low-latency fabric
- (For CE12800 switches) Configure queue lengths on an interface.
- Run qos queue queue-index length length-value
The length of a queue is set.
By default, the system manages the priority queue length of each interface.
If this command and the qos burst-mode (system view) command are both configured, the qos burst-mode (system view) command does not take effect.
- Run qos queue queue-index length length-value
