Chapter 7: Quality of Service (QoS) Configuring Policers (Rate Metering)phn-3963_008v000Page 7-214. In the Ethertype 1 profile field, select a profile from the policer profiles defined in the system. The Ethertype 1profile drop-down list includes the ID and description of all defined profiles.5. In the Ethertype 1 user value field, enter the Ethertype value to which you want to apply this policer. The fieldlength is 4 nibbles (for example, 0x0806 - ARP).6. In the Ethertype 1 admin field, select Enable to enable policing on the logical interface for the specifiedethertype, or Disable to disable policing on the logical interface for the specified ethertype.7. Click Apply.8. To assign policers to additional Ethertypes, select Ethertype type 2 Policer and Ethertype type 3 Policer andrepeat the steps above.Configuring the Ingress and Egress Byte CompensationYou can define the ingress and egress byte compensation value per logical interface. The policer attached to theinterface uses these values to compensate for Layer 1 non-effective traffic bytes.To define the ingress byte compensation value for a logical interface:1. Select Ethernet > Interfaces > Logical Interfaces. The Logical Interfaces page opens (Figure 182).2. Select the interface you want to configure and click Edit. The Logical Interfaces - Edit page opens (Figure 183).3. In the Ingress byte compensation field, enter the ingress byte compensation value, in bytes. Permitted valuesare 0 to 32 bytes. The default value is 20 bytes.4. In the Egress byte compensation field, enter the egress byte compensation value, in bytes. Permitted valuesare 0 to 32 bytes. The default value is 0 bytes. Only even values are permitted.5. Click Apply, then Close.
