ProSoft Technology RLX2-IHx Series User Manual page 100

Configuring a Radio - Detailed Configuration
User Manual
Parameter
Arp Proxy
EIP Object
Disable
Page 100 of 250
Description
In industrial wireless networks, it is important to minimize external disturbances
which can cause packet latencies to soar. This can be anything from
interference generated from other equipment, to another wireless network using
the same channel or even internally generated broadcast bursts which when
transmitted simultaneously from multiple overlapping Masters can cause severe
latency spikes.
The latter can sometimes unintentionally be caused by a controller looking for a
list of remote devices, producing a burst of ARP Request frames. The ARP
Proxy feature when enabled, will intercept these ARP Requests and prevent
them from flooding the wireless network. The RLX2 is continually learning and
adding the MAC and IP Addresses of devices to its address tables and if the IP
Address being requested by the ARP Request is known, the ARP Proxy
function will send an ARP Response for the IP Address back to the Requestor.
The ARP Proxy feature should not be enabled if it is known that remote devices
do not send unsolicited IP frames after power up. If the device remains silent
until it is polled for example then the RLX2s will not learn its IP/MAC Address
and any ARP Requests for this device will not reach it.
In wireless network topologies where Repeaters always connect directly to
Masters, the ARP Proxy feature only needs to be enabled on the Masters. If the
topology consists of a multi-hop Repeatered network then enabling the ARP
Proxy feature on the Repeaters will also prevent ARP Request floods down-tree
from the Repeater.
Check this box to disable the Ethernet I/P agent in the radio. When checked
queries to read the EIP Object classes are ignored.
RLX2-IHx Series ♦ 802.11a, b, g, n
Industrial Hotspots
ProSoft Technology, Inc.