Policer Color-Marking and Actions

Table 1 lists each of the Junos OS policer types supported. For each policer type, the table summarizes the color-marking criteria used to categorize a traffic flow and, for each color, the actions taken on packets in that type of traffic flow.

Table 1: Implicit and Configurable Policer Actions Based on Color Marking
Policer Rate Limits and Color Marking		Implicit Action	Configurable Actions
Single-Rate Two-Color Policer Bandwidth limit Burst size
	GreenConforms to rate and burst size limits	Set PLP to `low`	–
	RedExceeds rate and burst size limits	–	Discard the packet. Assign to a forwarding class. Set PLP to `low` or `high`. On some platforms, you can also set the PLP to `medium-low` or `medium-high`.
Single-Rate Three-Color Policer Committed information rate (CIR) Committed burst size (CBS) Excess burst size (EBS)
	GreenConforms to the CIR and CBS	Set PLP to `low`	–
	YellowExceeds the CIR and CBS butconforms to the EBS	Set PLP to `medium-high`	–
	RedExceeds the EBS	Set PLP to `high`	Discard the packet.
Two-Rate Three-Color Policer Committed information rate (CIR) Committed burst size (CBS) Peak information rate (PIR) Peak burst size (PBS)
	GreenConforms to the CIR and CBS	Set PLP to `low`	–
	YellowExceeds the CIR and CBS, butconforms to the PIR	Set PLP to `medium-high`	–
	RedExceeds the PIR and PBS	Set PLP to `high`	Discard the packet.
Hierarchical Policer
Aggregate policer Bandwidth limit Burst size
	GreenConforms to rate limits	Set PLP to `low`	–
	RedExceeds rate limits	–	Discard the packet. Assign to a forwarding class. Set PLP to `low` or `high`. On some platforms, you can also set the PLP to `medium-low` or `medium-high`.
Premium policer Bandwidth limit Burst size
	GreenConforms to rate limits	Set PLP to `low`	–
	RedExceeds rate limits	–	Discard the packet.

Policer Color-Marking and Actions

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