Users Guide

Table Of Contents
Parameter Description
Frame Receive Error Rate
Low Watermark
After a frame receive error rate exceeded condition exists, the
condition persists until the frame receive error rate drops below this
value. The recommended value is 8%.
Frame Retry Rate High
Watermark
If the frame retry rate (as a percentage of total frames in an AP)
exceeds this value, a frame retry rate exceeded condition exists. The
recommended value is 16%.
Frame Retry Rate Low
Watermark
After a frame retry rate exceeded condition exists, the condition
persists until the frame retry rate drops below this value. The
recommended value is 8%.
Using the CLI
Use the following command to configure RF event profiles. The available parameters for this profile are
detailed in Table 123.
rf event-thresholds-profile <profile>
bwr-high-wm <percent>
bwr-low-wm <percent>
clone <profile>
detect-frame-rate-anomalies
fer-high-wm <percent>
fer-low-wm <percent>
ffr-high-wm <percent>
ffr-low-wm <percent>
flsr-high-wm <percent>
flsr-low-wm <percent>
fnur-high-wm <percent>
fnur-low-wm <percent>
frer-high-wm <percent>
frer-low-wm <percent>
frr-high-wm <percent>
frr-low-wm <percent>
Optimizing APs Over Low-Speed Links
Depending on your deployment scenario, you may have APs or remote APs that connect to a controller located
across low-speed (less than 1Mbps capacity) or high-latency (greater than 100ms) links.
With low-speed links, if heartbeat or keep alive packets are not received between the AP and controller during
the defined interval, APs may reboot causing clients to re-associate. You can adjust the bootstrap threshold
and prioritize AP heartbeats to optimize these types of links. In addition, high bandwidth applications may
saturate low-speed links. For example, if you have tunnel-mode SSIDs, use them with low-bandwidth
applications such as barcode scanning, small database lookups, and Telnet to avoid saturating the link. If you
have traffic that will remain local, deploying remote APs and configuring SSIDs as bridge-mode SSIDs can also
prevent link saturation.
With high-latency links, consider the amount and type of client devices accessing the links. Dell APs locally
process 802.11 probe-requests and probe-responses, but the 802.11 association process requires interaction
with the controller.
When deploying APs across low-speed or high-latency links, The following best practices are recommended:
l Connect APs and controllers over a link with a capacity of 1Mbps or greater.
Dell Networking W-Series ArubaOS 6.5.x | User Guide Access Points | 558