Arp Caching Page - Allen-Bradley Stratix 5100 User Manual

ARP Caching Page

ARP caching on the access point reduces the traffic on your wireless LAN by
stopping ARP requests for client devices at the access point. Instead of
forwarding ARP requests to client devices, the access point responds to requests
on behalf of associated client devices.
When ARP caching is disabled, the access point forwards all ARP requests
through the radio port to associated clients, and the client that the ARP request is
directed responds. When ARP caching is enabled, the access point responds to
ARP requests for associated clients and does not forward requests to clients.
When the access point receives an ARP request for an IP address not in the cache,
the access point drops the request and does not forward it.
Figure 76 - ARP Caching Page
Table 61 - ARP Caching Page Parameter Descriptions
Parameter
Client ARP Caching
Forward ARP Requests to Radio
Interfaces When Not All Client IP
Addresses Are Known
Rockwell Automation Publication 1783-UM006A-EN-P - May 2014
Stratix 5100 Device Manager Parameter Definitions
Description
Click the appropriate radio button to enable or disable client ARP caching.
When a non-Cisco client device is associated to an access point and is not passing
data, the access point can not know the client's IP address. If this situation occurs
frequently on your wireless LAN, you can enable this check box. In this case, the
access point responds on behalf of clients with IP addresses known to the access
point but forwards out its radio port any ARP requests addressed to unknown
clients. When the access point learns the IP addresses for all associated clients, it
drops ARP requests not directed to its associated clients.
Chapter 4
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