How to clear ARP on Palo Alto Firewall?

The cache timeout on Palo Alto Networks firewalls is 30-minutes (1800 seconds) for ARP entries on all interfaces, which is a fixed setting and cannot be adjusted. If you do want to clear the ARP manually, you may run a commend line.

  1. To show arp status, run this command: >show arp all
  2. To clear arp on ethernet1/1, run these command: >clear arp ethernet1/1
  3. To clear all arp, run this command: >clear arp all.

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Bob Lin

Bob Lin, Chicagotech-MVP, MCSE & CNE Data recovery, Windows OS Recovery, Networking, and Computer Troubleshooting on http://www.ChicagoTech.net How to Install and Configure Windows, VMware, Virtualization and Cisco on http://www.HowToNetworking.com