User Manual

8-Port or 16-Port Gigabit Smart Managed Pro Switch Model GS418TPP, GS510TLP, and GS510TPP
Configure Routing User Manual250
an ARP request is broadcast to all stations on a LAN segment or VLAN, each recipient can
store the sender’s IP and MAC address in its ARP cache. Normally, only the requestor
receives an ARP response (a unicast message) and stores the sender’s information in its
ARP cache. The most recent information always replaces existing content in the ARP cache.
A device can be moved in a network, which means that the device’s IP address that was
associated with one MAC address is now associated with another MAC address. A device
can also disappear from the network altogether (for example, it was reconfigured,
disconnected, or powered off).
These situations cause stale information in the ARP cache.
Therefore, entries are updated or periodically refreshed to determine if an address still exists.
If an entry was identified as a sender of an ARP packet, the entry can be removed from the
ARP cache. You can configure an age-out interval that determines how long an entry that is
not updated remains in the ARP cache.
View the ARP cache
You can view ARP entries in the ARP cache. The ARP cache is a table that lists the remote
connections that were recently detected by the switch.
To view entries in the ARP cache:
1. Connect your computer to the same network as the switch.
You can use a WiFi or wired connection to connect your computer to the network, or
connect directly to a switch that is off-network using an Ethernet cable.
2. Launch a web browser.
3. In the address field of your web browser, enter the IP address of the switch.
If you do not know the IP address of the switch, see
Change the default IP address of the
switch on page 13.
The login window opens.
4. Enter the switch’s password in the Password field.
The default password is
password.
The System Information page displays.
5. Select Routing> ARP
> Basic
> ARP Cache.