Monitoring > Address Tables
ARP Table
This page displays the current Address Resolution Protocols (ARP) on the radio. The radio implemented ARP
protocol is used for resolution of network layer addresses into link layer addresses. It is used to map a IPv4
address to an Ethernet MAC address. The ARP table shows the results of the ARP protocol linkage between
IPv4 address and Ethernet MAC address of the devices attached to the radio.
In a layer 2 bridge LAN, an upper layer protocol may include the IP address of the destination, but since it
is an Ethernet LAN network, it also needs to know the destination MAC address. First, the radio uses a cached
ARP table to look up the IPv4 destination address for the matching MAC address records. If the MAC address
is found, it sends the IPv4 packet encapsulated in Ethernet frame with the found MAC address. If the ARP
cache table did not produce a result for the destination IPv4 address, the radio sends a broadcast ARP
message requesting an answer (of MAC address that matches) for IP address. The destination device responds
with its MAC address (and IP). The response information is cached in radios’ ARP table and the message can
now be sent with the appropriate destination MAC address.
ADDRESS TABLES
Controls
The Next button will display the next page of 8 addresses and the Prev button will display the previous page
of 8 addresses.
If the Auto Refresh option is ticked, the ARP table will refresh every 12 seconds.
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