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Understanding Color-Blind Mode for Two-Rate Tricolor Marking

With the color-blind mode of two-rate tricolor marking, all packets are evaluated against the committed information rate (CIR). If a packet exceeds the CIR, it is evaluated against the peak information rate (PIR). Packets that exceed the CIR but are below the PIR are marked yellow (medium-high). Packets that exceed the PIR are marked red (high).

Table 1: Color-Blind Mode TCM Color-to-PLP Mapping

Color

PLP

Meaning

Green

low

Packet does not exceed the CIR.

Yellow

medium-high

Packet exceeds the CIR but does not exceed the PIR.

Red

high

Packet exceeds the PIR.

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