Re: [smartBridges] LQ and RSSI Question

[Ray]

Title: Message

I've noticed that the ESSID on my ABO's seem to randomly change capitalization.  For example I have one that I set up as "Eric" and this morning it is "eRic"  and another one that was "BTINS" is now "BtiNs".   Weird...  Or is that wEiRD?     ----- Original Message ----- From: phantam To: '[EMAIL PROTECTED]' Sent: Sunday, June 29, 2003 9:46 AM Subject: RE: [smartBridges] LQ and RSSI Question That's a very good analysis and this was my question because I'm really scared to do any major reliability factors on the SNMP or setting information because im just not so sure of how reliable the checking for valid information is if something is sent wrong, it seems every time I remotely change an ESSId the damn thing doesn't work, it disassociates and is gone once I went and saw the essid was "AsfasdSDF" but then I did it once it went off and before I could get there the guy that owned it reset it and came back up so is there a reset command after a remote change missing or something? How reliable is updating firmware from remote?     Chris   From: Tom Haynes [mailto:[EMAIL PROTECTED] Sent: Sunday, June 29, 2003 2:32 AM To: [EMAIL PROTECTED]   This is not exactly wat it seems like. The RSSI, I believe, should be right for what the AP is recieving but I believe the LQ rating on the AP is queried from the AB. If the SNMP packet (using unreliable UDP transport) gets lost or It can't get continious readings from the AB then the calculated average will be thrown off. The way LQ is calculated is that the AB counts the number of attempts to send a packet and the number of successfull transmisions over a given amount of time (2 seconds I think).   Here is the precess: 1. Read packets sent  (PS1) 2. Read packets ACKnolwedged (PA1) 3. Wait 2 seconds 4. Read packets sent again (PS2) 5. Read packets ACKnolwedged (PA2) 6. Calculate LQ for last two seconds        PS2 - PS1 = Total Packets sent (PSt)        PA2 - PA1 = Total Packets ACKnolwedged (PAt)        PAt / PSt = LQ   OK, this all works fine IF you can always read the stats like the AB can read it's own stats. Now the AP has to request this information over the network using SNMP. If any part of the requested information is lost in transit then the numbers come out wrong. So don't rely on the numbers from the AP.   The RSSI may be correct on the AP. I am not sure if the AP is using the level that it is recieving at or if this is also queried from the AB.   TO SMARTBRIDGES: Is there any attempt in the FW to filter out missing information from the averageing process? Where does the AP get the RSSI info about a particular bridge?   Tom Haynes HopeWireless Network [EMAIL PROTECTED] http://www.tomhaynes.net -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of phantam Sent: Saturday, June 28, 2003 7:14 PM To: '[EMAIL PROTECTED]' Subject: RE: [smartBridges] LQ and RSSI Question I have seen this aswell my clients have great lq and rssi but the ap shows low lq on some of them some with even 0 L   Chris   From: Ray [mailto:[EMAIL PROTECTED] Sent: Saturday, June 28, 2003 7:54 PM To: [EMAIL PROTECTED]   How many on the list are checking the RSSI and LQ on both the CPE /AND/ the AP when you do an install?   On our CPE side we have almost everyone at 100% RSSI (lowest is about 80%) and LQ ranges from 65 to 100 when we view from the CPE side.   However, when we pull up the client info on the APPO we have lots of 100% RSSI but the LQ ranges from 95% to 35%.  The LQ number on the client info tab move around quite a bit and some even drop to 0 for a few seconds.   Any tips on what to look for here?