see my last email to Seeni...for more details. The setting that disables frag is whatever the highest value for it is...2347 sounds about right. I believe what this does is forces the APPO to NOT split up any data into small packets. (I guess if the data is small to begin with, it keeps it small, but it won't break down large files into smaller ones.)
Only on CPEs...nothing on APPOs.
On Sun, 2003-10-05 at 12:13, Blazen Wireless wrote:
You turned OFF frag on the APPO? what is the setting for that is it 2347 I cant remember and what performance increase did you see? what does this do exactly does it force the APPO to send NO fragmented packets or tons of small ones?
What did you set the RTS values to on the CPE? did you also set the CTS on the APPO's as well?
Thanks
----- Original Message -----
From: Sevak Avakians
To: [EMAIL PROTECTED]
Sent: Sunday, October 05, 2003 6:35 AM
Subject: Re: [smartBridges] Any experience with RTS/CTS and Threshold settings
Hi Seeni,
Yes, changing these settings made a dramatic difference in our network. Our customer's CPE are not normally seen by the other CPEs since they are all in apartment buildings. By following SB's suggestions, we changed the values for RTS on CPE and Frag on APPO. This improved the network performance slightly, but optimal performance came when we turned off frag on APPO and only used RTS on CPE.
Hope this helps.
Sevak
On Sun, 2003-10-05 at 04:20, Seeni Mohamed wrote:
Hi,
In order to achieve better performance and increase the throughput in the wireless link, sometimes following adjustments are required in the AP and CPE devices.
Any one has the FIELD EXPERIENCE with these 2 adjustments?
Once you adjusted these values, did you get any positive improvements in the performance?
Probably WISP experts might know much more about. I would like to know about your field experience.
I know that we need to try with various values and it may be varies between one place to another. But I really want to know your field experience and what circumstances you have done the changes. Is it really helped or not?
The following information is provided for the purpose of understanding the two values.
Fragmentation threshold adjustment is required to increase the reliability of frame transmissions. This value determines the size at which packets are fragmented. It means sending the packet as several pieces instead of one block. Normally, the sB radios default value is 2346. This default setting will work most of the time and no doubt about it. But some times when we deal with higher interference, we need to lower down the values to improve efficiency in the packet transmission which avoids the packet loss. The following link will give more information on this.http://www.80211-planet.com/tutorials/article.php/1468331
RTS/CTS adjustment is required to minimize collisions among hidden node problems. This value determines the packet size at which the AP issues the request to send (RTS) before sending the packet. As I mentioned before, the default values will work most of the time. Sometimes, low RTS/CTS settings will improve the throughput where many client devices are associating with AP or where the CPEs are far away and can detect only the AP and not each other. This occurs when the users and access points are spread out throughout the facility and you are finding relatively higher number of re transmissions occurring on the wireless LAN..
http://www.80211-planet.com/tutorials/article.php/1445641
Any field experience and feedback much appreciated.
Thank you
Seeni
sB Tech Support
[EMAIL PROTECTED]
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