Table 12: Bandwidth Limits And Token Rates - Juniper EX9200 Features Manual

Traffic Policers Feature Guide for EX9200 Switches
Options
Required Privilege
Level
204
Table 12 on page 204 summarizes the relationship between the
token arrival rate. This information is useful in calculating the minimum

Table 12: Bandwidth Limits and Token Rates

Bandwidth Limit
0-333 Mbps
334-666 Mbps
667-1333 Mbps
1334 Mbps and above
The burst-size limit enforced is based on the burst-size limit you configure. For a
rate-limited logical interface, the Packet Forwarding Engine calculates the optimum
burst-size-limit values and then applies the value closest to the burst-size-limit value
specified in the policer configuration.
On MX Series routers and EX Series switches, the burst-size limit is not as freely
configurable as it is on other platforms. Junos OS does not support an unlimited
combination of policer bandwidth and burst-size limits on MX Series routers and EX
Series switches. For a single-rate two-color policer on an MX Series router and on an EX
Series switch, the minimum supported burst-size limit is equivalent to the amount of
traffic allowed by the policer bandwidth limit in a time span of 1 millisecond. For example,
for a policer configured with a
value for burst-size-limit on an MX Series router is 125 KB. If you configure a value that is
smaller than the minimum, Junos OS overrides the configuration and applies the actual
minimum.
bytes —Burst-size limit in bytes. The minimum recommended value is the maximum
transmission unit (MTU) of the IP packets being policed. You can specify the value
either as a complete decimal number or as a decimal number followed by the
abbreviation (1000),
k
Range: 1500 through 100,000,000,000
Default: None
firewall—To view this statement in the configuration.
firewall-control—To add this statement to the configuration.
Token Rate
low (262 µs)
high (8.2 µs)
low
high
value of 1 Gbps, the minimum supported
bandwidth-limit
(1,000,000), or (1,000,000,000).
m g
and the
bandwidth-limit
burst-size-limit
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