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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.

  • Range: 1 through 2,000,000

  • Default: (ACX Series routers, EX2200, EX2200-C, EX3200, and EX3300 switches, SRX Series services gateways) 20,000

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

    (Other platforms) 100,000

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.