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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 -----
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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