3Com Switch 4800G 24-Port Configuration Manual page 790

Switch 4800g family 24-port, pwr 24-port, 48-port, pwr 48-port, 24-port sfp

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ONFIGURATION

Ping Host B on Host A to verify that the two hosts cannot be pinged through,

which indicates they are isolated at Layer 2.

# Configure local proxy ARP to let Host A and Host B communicate at Layer 3.

[SwitchA-Vlan-interface2] local-proxy-arp enable

[SwitchA-Vlan-interface2] quit

Ping Host B on Host A to verify that the two hosts can be pinged through, which

indicates Layer 3 communication is implemented.

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Troubleshooting