Configuring ETS parameters
ETS provides committed bandwidth. To avoid packet loss caused by congestion, the device performs the following tasks:
Uses ETS parameters to negotiate with the server adapter.
Controls the server adapter's transmission speed of the specified type of traffic,
Guarantees that the transmission speed is within the committed bandwidth of the interface.
To configure ETS parameters, you must configure the 802.1p-to-local priority mapping and group-based WRR queuing.
Configuring the 802.1p-to-local priority mapping
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter 802.1p-to-local priority mapping table view. | qos map-table dot1p-lp | N/A |
3. Configure the priority mapping table to map the specified 802.1p priority values to a local precedence value. | import import-value-list export export-value | For information about the default priority mapping tables, see ACL and QoS Configuration Guide. |
4. Return to system view. | quit | N/A |
5. Enter Ethernet interface view. | interface interface-type interface-number | N/A |
6. Configure the interface to trust the 802.1p priority carried in packets. | qos trust dot1p | By default, the port priority of the incoming port is trusted. |
For more information about the qos map-table, qos map-table color, and import commands, see ACL and QoS Command Reference.
Configuring group-based WRR queuing
You can configure group-based WRR queuing to allocate bandwidth.
To configure group-based WRR queuing:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter Layer 2 Ethernet interface view. | interface interface-type interface-number | N/A |
3. Enable WRR queuing. | qos wrr byte-count | By default, byte-count WRR is used. |
4. Configure a queue. |
| Use one or both commands. |
For more information about the qos wrr, qos wrr byte-count, and qos wrr group sp commands, see ACL and QoS Command Reference.