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Policer Bandwidth and Burst-Size Limits

Table 1 lists each of the Junos OS policer types supported. For each policer type, the table summarizes the bandwidth limits and burst-size limits used to rate-limit traffic.

Table 1: Policer Bandwidth Limits and Burst-Size Limits

Policer Type	Bandwidth Limits	Burst-Size Limits
Single-Rate Two-Color Policer
Defines a single rate limit: a bandwidth limit and an allowed burst size for conforming traffic. For a single-rate two-color policer only, you can specify the bandwidth limit as a percentage value from 1 through 100 instead of as an absolute number of bits per second. The effective bandwidth limit is calculated as a percentage of either the physical interface media rate or the logical interface configured shaping rate.	bandwidth-limit bps; ^{M, MX, T Series routers and EX Series switches:} 8000..50000000000	burst-size-limit bytes; ^{M, MX, T Series routers, and EX Series switches:} 1500..10000000000
bandwidth-percent 1..100 percent
Single-Rate Three-Color Policer
Defines a single rate limit: a bandwidth limit and an allowed burst size for conforming traffic. Also defines a second, larger burst size. This second burst size is used to differentiate between two categories of nonconforming traffic (yellow or red).	committed-information-rate bps; ^{M, MX, T Series routers, and EX Series switches:} 1500..100000000000	committed-burst-size bytes; ^{M, MX, T Series routers, and EX Series swiches:} 1500..100000000000
excess-burst-size bytes; ^{M, MX, T Series routers, and EX Series switches:} 1500..100000000000
Two-Rate Three-Color Policer
Defines a committed rate limit: a bandwidth limit and an allowed burst size for conforming traffic. Also defines a peak rate limit: a second, larger burst size and a second, higher bandwidth limit. These additional rate-limit components are used to differentiate between two categories of nonconforming traffic (yellow or red).	committed-information-rate bps; ^{M, MX, T Series routers, and EX Series switches:} 1500..100000000000	committed-burst-size bytes; ^{M, MX, T Series routers, and EX Series switches:} 1500..100000000000
peak-information-rate bps; ^{M, MX, T Series routers, and EX Series swiches:} 1500..100000000000	peak-burst-size bytes; ^{M, MX, T Series routers, and EX Series switches:} 1500..100000000000

Policer Type

Bandwidth Limits

Burst-Size Limits

Single-Rate Two-Color Policer

Defines a single rate limit: a bandwidth limit and an allowed burst size for conforming traffic.

For a single-rate two-color policer only, you can specify the bandwidth limit as a percentage value from 1 through 100 instead of as an absolute number of bits per second. The effective bandwidth limit is calculated as a percentage of either the physical interface media rate or the logical interface configured shaping rate.

bandwidth-limit bps;

^{M, MX, T Series routers and
EX Series switches:}
8000..50000000000

burst-size-limit bytes;

^{M, MX, T Series routers, and
EX Series switches:}
1500..10000000000

bandwidth-percent

1..100 percent

Single-Rate Three-Color Policer

Defines a single rate limit: a bandwidth limit and an allowed burst size for conforming traffic.

Also defines a second, larger burst size. This second burst size is used to differentiate between two categories of nonconforming traffic (yellow or red).

committed-information-rate bps;