NETGEAR AV Line M4250 GSM4210PX 8-Port Gigabit PoE+ Compliant Managed AV Switch with SFP (220W) - Manual (Page 378)

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.
Display the ARP entries in 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 display the ARP entries in the ARP cache:
1. Launch a web browser.
2. In the address field of your web browser, enter the IP address of the switch.
The login page displays.
3. Click the Main UI Login button.
The main UI login page displays in a new tab.
4. Enter admin as the user name, enter your local device password, and click the Login
button.
The first time that you log in, no password is required. However, you then must
specify a local device password to use each subsequent time that you log in.
The System Information page displays.
5. Select Routing> ARP > Basic > ARP Cache.
The ARP Cache page displays.
The page displays the following information:
• IP Address: Displays the IP address associated with the system’s MAC address.
This address must be the IP address of a device on a subnet attached to one of
the switch's existing routing interfaces.
• Port: Displays the associated unit/slot/port of the connection.
• MAC Address: Displays the unicast MAC address of the device. The address is
six 2-digit hexadecimal numbers separated by colons, for example,
00:06:29:32:81:40.
The ARP cache be large. The pagination navigation menu functions as follows:
Main User Manual 378 Manage Routing
AV Line of Fully Managed Switches M4250 Series Main User Manual