Allied Telesis AT-FS970M Series - Manual (Page 276)

Chapter 24: Managing the ARP Table
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Overview
The Address Resolution Protocol (ARP) is used to associate an IPv4
address with a MAC address used by network nodes including the
AT-FS970M switches. ARP gathers information about mapping between
an IPv4 address and a MAC address and stores them in the ARP table.
When the node receives a packet from the Network layer, then the node
encapsulates the packet into a frame. The node looks up the ARP cache
to find out the MAC address of the destination node. The ARP table is
populated dynamically; however, the AT-FS970M switches allow you to
add static ARP entries, which are entered manually.
ARP Table
Management
Guidelines
See the following list for guidelines about managing the ARP table on the
AT-FS970M switches:
 The dynamic ARP entries are time-stamped and set to time out in 300
seconds.
 The dynamic ARP entries are not deleted individually and must be
deleted altogether if you want to delete them before they time out.
 The switch supports up to 512 static ARP entries.
 The static ARP entries never expire. You must remove them manually
as needed. You can delete them individually.