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Hierarchy Level


Enable proactive ARP detection to check the reachability of connected devices (within an IP subnet range) on a specified interface. After enabling this statement, you can set the ARP configurations at the interface level by the setting the: host-discovery address-range, ageing-time-out seconds, and discovery-time-interval seconds options at the [edit interfaces interface-name family inet address ip-address] hierarchy level. Likewise, you can delete the ARP configuration settings by using the delete interfaces interface-name unit unit family inet address ip-address host-discovery address-range command.


This configuration statement is disabled by default.

Required Privilege Level


Release Information

Statement introduced in Junos OS Release 18.3R1-S3, 18.3R2 and 19.3R1.