packet-burst (Policer)

Syntax

Hierarchy Level

Description

For a single-rate two-color policer, configure the packet-burst as a number of packets. Single-rate two-color policing uses the single token bucket algorithm to measure traffic-flow conformance to a two-color policer rate limit.

Traffic at the interface that conforms to the pps-limit is categorized green. Traffic that exceeds the specified rate is also categorized as green provided that sufficient tokens remain in the single token bucket. Packets in a green flow are implicitly marked with low packet loss priority (PLP) and then passed through the interface.

Traffic that exceeds the specified rate when insufficient tokens remain in the single token bucket is categorized red. Depending on the configuration of the two-color policer, packets in a red traffic flow might be implicitly discarded; or the packets might be re-marked with a specified forwarding class, a specified PLP, or both, and then passed through the interface.

Single-rate two-color policing allows bursts of traffic for short periods, whereas single-rate and two-rate three-color policing allows more sustained bursts of traffic.

Hierarchical policing is a form of two-color policing that applies different policing actions based on whether the packets are classified for expedited forwarding (EF) or for a lower priority. You apply a hierarchical policer to ingress Layer 2 traffic to allows bursts of EF traffic for short period and bursts of non-EF traffic for short periods, with EF traffic always taking precedence over non-EF traffic.

Options

packets—Specify the number of packets either as a decimal number or as a decimal number followed by the abbreviation k (1000), or m (1000000).

• Range: 1 through 24414062

• Default: None

Required Privilege Level

firewall—To view this statement in the configuration.firewall-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 16.1.