I would not be that adament... basically, it is true that if the AP is too high, you start losing throughput, then if it is even higher, your clients can't connect anymore. All this depends on the radio (802.11a or 802.11b/g), speed you expect to achieve and distance from which you want to connect.
8-9 m seems a bit high for a normal office indoor typical deployment, but it depends what and how (how far) you plan to connect. Keep in mind that a common issue is that the AP is poweful enough to be heard by the client, but client might be too weak to be heard by the AP upon answering.
In this scenario, I would be suspicious but still test... whereas at 15 feet, I would be confident it would work for most/all client types...
Ideal mounting height should be between 10 and 15 feet, with 20 feet being a recommended maximum. Mounting height should also be carefully considered if you are using the location appliance - keep all of the APs at the same height. Here is an article for location-based services AP installation guidelines:
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
This is the start of a display filter cross reference between Wireshark and OmniPeek.
The 1st installment is a table of advanced filters. More filters will be added as time allows.
It is a living doc, so check back for changes every so often
Please feel ...
I have created a Powershell script to automatically add a Wireless Guest User on Cisco WLCs. (tested on 2500 Series)
The script should be completely self explanatory.
Powershell SNMP Module (Install-Module -Name SNMP)
SNMP Write Access to...