Administration of the Avaya G350 Media Gateway - Avaya Support

Configuring the ARP tableConfiguring the ARP tableWhen you configure the ARP table, you can:●●●●View information about the ARP tableAdd entries to the ARP tableDelete entries from the ARP tableConfigure the ARP timeoutNote:Note:To change an entry in the ARP table, delete the entry and add it back with revisedparameters.Overview of ARPIP logical network addresses are independent of physical addresses. The physical addressmust be used to convey data in the form of a frame from one device to another. Therefore, amechanism is required to acquire a destination device hardware address from its IP address.This mechanism is called ARP (Address Resolution Protocol).The ARP tableThe ARP table stores pairs of IP and MAC addresses. This storage saves time andcommunication costs, since the host looks in the ARP table first when transmitting a packet. Ifthe 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 entriesStatic ARP table entries do not expire. You add static ARP table entries manually with the arpcommand. For example, to add a static ARP table entry for station 192.168.7.8 with MACaddress 00:40:0d:8c:2a:01, use the following command:G350-001# arp 192.168.7.8 00:40:0d:8c:2a:01Issue 3 January 2005 187