To configure a 7250 SROS Port QoS policy

Purpose

A 7250 SROS Port QoS policy defines scheduler parameters for egress queues. The policy allows configuration of WRR weights, CIR and PIR values, and the assignment of 7250 SROS Queue Management policies.

The 7250 SROS Port QoS policy also allows viewing of the mapping of forwarding classes to queues. FCs are mapped to queues by default; the mapping is not user-configurable.

For supporting NEs, the policy allows configuration of a Packet Byte Offset value. See the NE documentation for more information about PBO on the 7250 IXR.

7250 SROS Port QoS policies are assigned to ports, using the Policies tab of the port properties form; see To configure Ethernet ports.

7250 SROS Port QoS policies are identified by the policy name; policy ID numbers are not used.

A default 7250 Port QoS policy is applied if no user-configured policy is explicitly used. The default policy cannot be deleted or modified.

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

Steps
 
1 

Choose Policies→QoS→SROS QoS→Scheduler→7250 SROS Port QoS from the NFM-P main menu. The 7250 SROS Port QoS form opens.

2 

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

3 

Configure the required parameters on the General tab.

For supporting NEs, you can configure the Packet Byte Offset parameter when QoS Packet Byte Offset is globally enabled in NE properties; see To globally enable or disable Packet Byte Offset on a 7250 IXR.

4 

Click on the Forwarding Classes tab to view the mapping of FCs to queues. The mapping is not user-configurable.

5 

Click on the Queues tab to configure egress queues.

  1. Choose a queue from the list and click Properties. The Port QoS Queue, 7250 SROS Port QoS (Create|Edit) form opens.

  2. Configure the required parameters on the General tab.

    For the WRR Weight parameter, ID and weight values are configured in Step 6.

  3. Select a 7250 SROS Queue Management policy. For information about 7250 SROS Queue Management policies, see To configure a 7250 SROS Queue Management policy.

  4. Click on the CIR/PIR tab and configure the required parameters.

  5. Save your changes and close the form.

6 

Click on the WRR Weights tab to configure multicast and unicast WRR weights for queues.

  1. Choose a WRR Weight ID from the list and click Properties. The Port QoS WRR Weights, Site (Create|Edit) form opens.

  2. Configure the required parameters.

    WRR IDs and weights configured in this step are used in Step 5 .

  3. Save your changes and close the form.

7 

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