Managing the ARP Table
ARP stands for Address Resolution Protocol. In IPv4 networking, network nodes use ARP to maintain information about peer network nodes. ARP is used to associate the Layer 3 IP address with a Layer 2 MAC address of neighboring peer nodes. The system maintains an ARP table with dynamic, cached entries, and you can add static entries if necessary. The system caches dynamic entries for up to 20 minutes. Dynamic entries are deleted during a reboot. Static entries are restored after a reboot.
To manage the ARP table:
- Select System > Network > Port > ARP Cache. Port is the Internal Port, External Port, or Management Port tab.
- Use the controls described in table to manage the ARP table.
|
Controls |
Description |
|---|---|
|
Delete |
Select a row in the table and click Delete to delete the entry. |
|
Delete Dynamic Entries |
Delete all dynamically discovered entries. |
|
Add |
Specify an IP address, a MAC address, and click Add to add an entry. If you add an entry that has the same IP address as an existing entry, the system overwrites the existing entry with your new entry. |