Chapter 14
| IP Configuration
Address Resolution Protocol
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The aging time determines how long dynamic entries remain in the cache. If
the timeout is too short, the switch may tie up resources by repeating ARP
requests for addresses recently flushed from the table.
When a ARP entry expires, it is deleted from the cache and an ARP request
packet is sent to re-establish the MAC address.
Web Interface
To configure the timeout for the ARP cache:
1. Click IP, ARP.
2. Select Configure General from the Step List.
3. Set the timeout to a suitable value for the ARP cache.
4. Click Apply.
Figure 282: Setting the ARP Timeout
Displaying ARP Entries Use the IP > ARP (Show Information) page to display dynamic or local entries in the
ARP cache
.
The ARP cache contains entries for local interfaces, including subnet, host,
and broadcast addresses. However, most entries will be dynamically learned through
replies to broadcast
messages.
Web Interface
To display all entries in the ARP cache:
1. Click IP, ARP.
2. Select Show Information from the Step List.
Figure 283: Displaying ARP Entries
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