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Ethernet Switch CLI Reference Guide

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CHAPTER 65

trTCM Commands

This chapter explains how to use commands to configure the Two Rate Three Color Marker

(trTCM) feature on the Switch.

65.1 trTCM Overview

Two Rate Three Color Marker (trTCM, defined in RFC 2698) is a type of traffic policing that

identifies packets by comparing them to two user-defined rates: the Committed Information

Rate (CIR) and the Peak Information Rate (PIR). trTCM then tags the packets:

• red - if the packet exceeds the PIR

• yellow - if the packet is below the PIR, but exceeds the CIR

• green - if the packet is below the CIR

The colors reflect the packet’s loss priority and the Switch changes the packet’s DiffServ Code

Point (DSCP) value based on the color.

65.2 Command Summary

The following section lists the commands for this feature.

Table 137 trtcm Command Summary

COMMAND DESCRIPTION M P

trtcm Enables trTCM on the Switch. C 13

trtcm mode <color-aware|color-blind> Sets the mode for trTCM on the Switch. C 13

no trtcm Disables trTCM feature on the Switch. C 13

interface port-channel <port-list> Enters subcommand mode for configuring

the specified ports.

C13

trtcm Enables trTCM on the specified port(s). C 13

no trtcm Disables trTCM on the port(s). C 13

trtcm cir <rate> Sets the Commit Information Rate on the

port(s).

C13

trtcm pir <rate> Sets the Peak Information Rate on the

port(s).

C13

trtcm dscp green <0-63> Specifies the DSCP value to use for

packets with low packet loss priority.

C13

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ZyXEL Communications G-102 - V1.0 Guía de usuario Pagina 227