To configure a 7250 SROS Queue Management policy

Purpose

A 7250 SROS Queue Management policy defines parameters for calculating drop precedence for egress queues. The policy defines values for Time Average Factor, MBS, and WRED slope calculations. If the slopes are not configured in the policy, the queue tail drops any excess traffic. The policy also defines a port speed value that supporting NEs use to internally optimize the allocation of virtual output queues in NE system memory.

7250 SROS Queue Management policies are assigned to queues in the following policies:

You can view the associated 7250 SROS VLAN QoS and 7250 SROS Port QoS policies using the 7250 SROS Queue Management policy properties form.

7250 Queue Management policies are identified by the policy name; policy ID numbers are not used.

The NFM-P provides a default 7250 SROS Queue Management policy. The default policy cannot be deleted or modified. The default queue management policy is assigned to queues in 7250 SROS VLAN QoS policies and 7250 SROS Port QoS policies if no user-configured queue management policy is explicitly assigned. The NFM-P default 7250 SROS Queue Management policy does not assign a port speed. When the default policy is distributed to an NE that supports port speed configuration, the NE automatically assigns a port speed.

The 7250 IXR supports 7250 SROS Queue Management policies.

Support for specific parameters and features varies, depending on the chassis type and release. Local definitions of the policy do not necessarily support all configurations in the global policy.

For more information about QoS policy support on the 7250 IXR, see 7250 IXR QoS policies.

Steps
 
1 

Choose Policies→QoS→SROS QoS→Slope→7250 SROS Queue Management from the NFM-P main menu. The 7250 SROS Queue Management form opens.

2 

Click Create, or choose a policy and click Properties. The 7250 SROS Queue Management Policy (Create|Edit) form opens.

3 

Configure the required parameters.

4 

Click OK to save the policy and close the form, or click Apply to save the policy. See To release and distribute a policy to distribute the policy to NEs.

End of steps