„Three Color Marking Policer

The IDL-2402 supports TCM Policer in accordance with the Metro Ethernet Forum (MEF) Bandwidth Profile and RFCs 2697 & 2698. Our TCM Policer supports both Color Aware and Color Blind modes. The “color” is used for determining whether a packet will proceed to the policer when TCM Policer works in Color Aware mode; also in the policer the packet may be remarked with new color according to the packet’s conformance to the policer rules. A packet is considered green when it enters the TCM Policer only if its input color field, VLAN priority bits or DSCP field, has the same value with the green value configured in this page (see the following figure and parameter description). Likewise, a packet is considered yellow only if its input color field has the same value with the yellow value configured in this page. All other values are considered red.

Once a packet has passed through the TCM Policer, it will be directed to the class queues for scheduling.

 

Rate Limit Policer Binding Setup

Label

Description

Rate Limit Type

Click on this drop-down list and select the item you want to setup.

 

 

Modify

Once you have finished setting the parameter values, click on this button to

submit the modification.

 

 

 

Query

Click on this button to get most recent data.

 

 

 

Color aware mode: the packets are classified before they’re sent through the

Color Aware

policer.

Color blind mode: the packets are directed through the entire policer regardless

 

 

of their color.

 

 

 

There are two fields you can select for determining the packet’s input color: the

Color Field

VLAN priority bits within the Ethernet header or the DSCP field within the IP

 

header.

 

 

 

This parameter defines the action for non-conforming packets. You can choose

Packet Mode

Tag or Discard. If Tag is chosen, then all the packets will be marked as red in the

 

Color field rather than be discarded.

 

 

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