Show & diagnostics

show arp

ARP cache: IP → MAC mappings learned from ping/data traffic.

Works on: Router, Firewall, SwitchMode: enable

Sample output

Protocol  Address          Age (min)  Hardware Addr   Type   Interface
Internet  10.10.0.1               -   02b4.7d97.67c2  ARPA   Gi0/0
Internet  10.10.0.10              0   0234.f5ab.0ca9  ARPA   Gi0/0
Internet  10.10.0.20              0   0248.2e1b.e441  ARPA   Gi0/0
Internet  10.10.0.21              0   02e5.c67f.a005  ARPA   Gi0/0
Internet  172.16.0.1              -   027d.6e4e.d87d  ARPA   Se0/0/0
Internet  172.16.0.2              0   0298.db16.18bd  ARPA   Se0/0/0

Captured from the NetForge-AI simulator running a real topology.

Run this command live

Don't just read it — type show arp in a real network simulator in your browser and watch it take effect. No install, no account needed to start.

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Frequently asked

What does the "show arp" command do?

ARP cache: IP → MAC mappings learned from ping/data traffic.

More Show & diagnostics commands

show running-configshow <command> | include <regex>show startup-configshow ip interface briefshow interfaces [iface]show interfaces statusshow interfaces switchportshow vlan briefshow mac address-tableshow ip routeshow ip route <address>show ip route <protocol>

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