24-Port Layer 3 Switch Management Guide

ONFIGURING

THE

WITCH

3-160

Web - Click IP, ARP, General. Set the timeout to a suitable value for the

ARP cache, enable Proxy ARP for subnetworks that do not have routing

or a default gateway, and click Apply.

CLI - This example sets the ARP cache timeout for 15 minutes (i.e., 900

seconds), and enables Proxy ARP for VLAN 3.

Configuring Static ARP Addresses

For devices that do not respond to ARP requests, traffic will be dropped

because the IP address cannot be mapped to a physical address. If this

occurs, you can manually map an IP address to the corresponding physical

address in the ARP.

Command Usage

• You can define up to 128 static entries in the ARP cache.

• Static entries will not be aged out or deleted when power is reset. You can

only remove a static entry via the configuration interface.

Command Attributes

• IP Address – IP address statically mapped to a physical MAC address.

(Valid IP addresses consist of four numbers, 0 to 255, separated by

periods.)

Console(config)#arp-timeout 900 4-223

Console(config)#interface vlan 3 4-119

Console(config-if)#ip proxy-arp 4-224

Console(config-if)#