IP Configuration
IPv4 Management and Interfaces
351 Cisco 500 Series Managed Switch Administration Guide
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the ARP table to obtain the MAC address of the device. The ARP table contains
both static and dynamic addresses. Static addresses are manually configured and
do not age out. The device creates dynamic addresses from the ARP packets it
receives. Dynamic addresses age out after a configured time.
NOTE In Layer 2 mode, the IP, MAC address mapping in ARP Table is used by the device
to forward traffic originated by the device. In Layer 3 mode, the mapping
information is used for Layer 3 routing as well as to forward generated traffic.
To define the ARP tables:
STEP 1 Click IP Configuration > IPv4 Management and Interfaces > ARP.
STEP 2 Enter the parameters.
• ARP Entry Age Out—Enter the number of seconds that dynamic addresses
can remain in the ARP table. A dynamic address ages out after the time it is
in the table exceeds the ARP Entry Age Out time. When a dynamic address
ages out, it is deleted from the table, and only returns when it is relearned.
• Clear ARP Table Entries—Select the type of ARP entries to be cleared from
the system.
-
All
—Deletes all of the static and dynamic addresses immediately.
-
Dynamic
—Deletes all of the dynamic addresses immediately.
-
Static
—Deletes all of the static addresses immediately.
-
Normal Age Out
—Deletes dynamic addresses based on the configured
ARP Entry Age Out time.
STEP 3 Click Apply. The ARP global settings are written to the Running Configuration file.
The ARP table displays the following fields:
• Interface—The IPv4 Interface of the directly-connected IP subnet where the
IP device resides.
• IP Address—The IP address of the IP device.
• MAC Address—The MAC address of the IP device.
• Status—Whether the entry was manually entered or dynamically learned.
STEP 4 Click Add.
STEP 5 Enter the parameters:
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