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Hierarchy Level


Specify the ARP cache next-hop limit at the system (global) level to restrict the number of next-hop routes. To configure the limit at the interface level, use the arp-max-cache statement.

The default behavior of ARP is to remove the cache entry if it is not used within a certain period of time, and not to allow the cache to grow too large. You can also manage the number of ARP cache next-hop entries by configuring a limit to the maximum number of next hops that can be created.



Indicates the maximum number of routes to be held in the ARP cache.

  • Default:

    • 20,000 (ACX Series routers, EX2200, EX2200-C, EX3200, and EX3300 switches, SRX Series Firewalls)

    • 75,000 (EX4200, EX4300, EX4500, EX4550, and EX6210 switches, MX Series routers)

    • 100,000 (Other platforms)

  • Range: 1 through 2,000,000

Required Privilege Level

admin—To view this statement in the configuration.

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

Release Information

Statement introduced in Junos OS Release 16.1.