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maximum-prefixes prefix-limit <log-interval seconds> <log-only | threshold value>;

Hierarchy Level

[edit logical-systems logical-system-name routing-instances routing-instance-name routing-options],[edit logical-systems logical-system-name routing-options],[edit routing-instances routing-instance-name routing-options],[edit routing-options]

Release Information

Statement introduced in JUNOS Release 8.0.

Statement introduced in JUNOS Release 9.0 for EX Series switches.


Configure a limit for the number of routes installed in a routing table based upon the route prefix.


log-interval seconds—(Optional) Minimum time interval (in seconds) between log messages.

Range: 5 through 86,400

log-only—(Optional) Sets the prefix limit as an advisory limit. An advisory limit triggers only a warning, and additional routes are not rejected.

prefix-limit—Maximum number of route prefixes. If this limit is reached, a warning is triggered and any additional routes are rejected.

Range: 1 through 4,294,967,295
Default: No default

threshold value—(Optional) Percentage of the maximum number of prefixes that starts triggering warning. You can configure a percentage of the prefix-limit value that starts triggering the warnings.

Range: 1 through 100

Note: When the number or routes reaches the threshold value, routes are still installed into the routing table while warning messages are sent. When the number or routes reaches the prefix-limit value, then additional routes are rejected.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

Published: 2010-04-14

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