Creating the Service WRED Policy

Create the WRED discarding policy based on services, which includes the discarding threshold and discarding ratio for packets of different colors. The service WRED policy is applicable to the V-UNI ingress policy, V-UNI egress policy, PW policy and QinQ policy.

Navigation Path

In the NE Explorer, click the NE and choose Configuration > QoS Management > Policy Management. Then, click the Service WRED Policy tab.

Buttons

Button	Description
New	Click New to create a service WRED policy.
Delete	Select the desired service WRED policy and click Delete. NOTE: The policy to be deleted is not applied.
Apply	The configuration takes effect only by clicking Apply after the service WRED policy parameters are modified. NOTE: The policy to be modified is not applied.
Query	Click Queryto query port WRED policies from the NE.

Parameters

**Table 1** Descriptions of the parameters for Service WRED Policy
Field	Value	Description
Policy ID	Example: 5	Set and display the ID of the policy. If this parameter is set to 0, the system automatically allocates the policy ID.
Automatically Assign	Checked, Unchecked	Selects whether the ID is allocated automatically.
Policy Name	64 bytes	Set and display the name of the policy.
Packet Color	Red, Yellow, Green	Packets may be marked in red, yellow or green. Different colors indicate different priorities for packet discarding. The packets marked in red are discarded with the highest priority.
Lower Drop Threshold (256 bytes)	0 to 4095	Set the lower threshold for dropping the packets. When the queue length is lower than the lower drop threshold, the packets are not dropped.
Upper Drop Threshold (256 bytes)	0 to 4095	Set the upper threshold for dropping the packets. When the queue length is higher than the upper drop threshold, all packets are dropped. The upper drop threshold should not be lower than the lower drop threshold.
Drop Probability (%)	1 to 100	Set the probability for dropping packets marked in different colors. The discard probability indicates the probability for randomly dropping packets when the queue length is higher than the lower threshold but lower than the upper threshold.