Show & diagnostics

show arp

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

Works on: Router, SwitchMode: enable

Sample output

Protocol  Address          Hardware Addr        Type   Interface
Internet  172.16.0.2       02:CD:C2:71:E8:4D    ARPA   Se0/0/0
Internet  10.10.0.10       02:26:C0:21:C0:65    ARPA   Gi0/0
Internet  10.10.0.20       02:2B:9E:2E:20:85    ARPA   Gi0/0
Internet  10.10.0.21       02:50:52:09:04:A1    ARPA   Gi0/0

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-config show startup-config show ip interface brief show interfaces [iface]show interfaces status show interfaces switchport show vlan brief show mac address-table show ip route show ip route <protocol>show ip ospf neighbor show ip ospf interface

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