Dell PowerConnect W-Airwave User Manual page 196

Each section of the Users > Diagnostics page displays information by which to evaluate possible user issues.
Refer to
Table 115 Users > Diagnostics Page Sections
Section
Possible
Issues
Possible
Issues (Cont'd)
196 | Performing Daily Administration in AWMS
Table 115 for explanation and illustration of page components.
Description
This section summarizes the most likely items to create issues for a user on the network.
this section.
NOTE: Items in red are the values considered "out of spec."
Figure 137
Groups > Diagnostics > Possible Issues Illustration
Low signal quality—If signal quality falls outside of ideal range, then possible resolution might be moving

the client, adjusting client antennae, installing more or better antennas on the APs, adding APs, increasing
the transmit power of the APs, investigating intermittent RF interference (such as the startup schedule of a
nearby air conditioning unit), or evaluating the client settings.
Excessive roaming in last two hours—Excessive roaming means that a user's connection moves from one

AP to another 10 or more roaming instances in the past two hours. If there is excessive roaming but the
user has been stationary, then the user might be located where there is weak coverage from two
overlapping APs. Adjusting the signal strength for one of those APs may resolve the issue.
High User Bandwidth—Network performance issues might mean excessive bandwidth consumption.

Investigate user bandwidth consumption for all users on a given AP, not strictly the user who reports a
problem.
Unauthenticated User—This section conveys the user's current authentication status and the actual

authentication type. If a network deploys RADIUS, then the RADIUS server could be experiencing issues
even if a user attempts to log in with valid credentials but shows as Unauthenticated on this page.
High user load on AP/radio—This field indicates whether the number of users on a given AP has exceeded

that AP's functional capacity. Excessive users on an AP could degrade performance for all users on that
AP. Consider adding another AP in that area. Refer to the Current User Counts section on this page for
more details.
High AP radio bandwidth—This figure derives from how groups of users share radio bandwidth on a

shared AP. You may not need to add an additional AP to resolve this issue, but you would need to
determine why neighboring APs are not functioning properly.
802.11 radio parameters—These two sections indicate the likelihood that a user's issues are derived from

mismatched 802.11 deployment. That is, an 802.11ab or g user who is connected through an 802.11n radio
might not benefit from full 802.11n functionality. These two fields indicate the likelihood of such an issue
impacting a user's experience on the network, as well as a reduction of available bandwidth for other
users.
High FCS error rates—Frame Check Sequence (FCS) errors are checksum errors in the 802.11 protocol and

may indicate interference and congestion. One response is to assign a different channel to the AP
manually or by using Adaptive Radio Management (ARM).
Figure 137
Dell PowerConnect W AirWave 7.2 | User Guide
illustrates