Configuring The Arp Table; Overview Of Arp; The Arp Table - Avaya G350 Administration

Configuring the router

Configuring the ARP table

Configuring the ARP table
When you configure the ARP table, you can:
•
View information about the ARP table
•
Add entries to the ARP table
•
Delete entries from the ARP table
•
Configure the ARP timeout
NOTE:
To change an entry in the ARP table, delete the entry and add it back with revised
parameters.

Overview of ARP

IP logical network addresses are independent of physical addresses. The physical address must be used to
convey data in the form of a frame from one device to another. Therefore, a mechanism is required to
acquire a destination device hardware address from its IP address. This mechanism is called ARP
(Address Resolution Protocol).

The ARP table

The ARP table stores pairs of IP and MAC addresses. This storage saves time and communication costs,
since the host looks in the ARP table first when transmitting a packet. If the information is not there, then
the host sends an ARP Request.
There are two types of entries in the ARP table:
•
Static ARP table entries
•
Dynamic ARP table entries
Static ARP table entries do not expire. You add static ARP table entries manually with the
For example, to add a static ARP table entry for station 192.168.7.8 with MAC address
00:40:0d:8c:2a:01, use the following command:
G350-001# arp 192.168.7.8 00:40:0d:8c:2a:01
146 Administration of the Avaya G350 Media Gateway
command.
arp
June 2004