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Wireless client continuously receives from access pointThe client is a Linksys Wireless-G USB adapter connected to
a USB1 port and the AP (access point) is a Netgear WPN802v2 about ten feet from the client. The XP SP2 Performance Monitor shows a steady 5kB/sec (approximately) received by the client and zero sent. At about 50-second intervals the receive rate drops briefly to zero, rises to about 10kB/sec and promptly drops to the 5kB receive rate. The connection is otherwise idle. The client can access the internet normally through the AP. Any suggestions for a diagnostic approach would be appreciated, including teaching this networking neophyte how to ask the right question. --David Hi
If your computer was sending back a lot of data without you doing any thing it might be a sign of Spyware or some sort of Trojan. Since your computer does not sent back any thing I would Not worry too much about it. Access Points have a Broadcast Beacon that transmits periodically a burst of info to announce its existence and identified itself, SSID. I am not familiar with your specific unit. Log to the AP's menu and look for SSID broadcast rate or similar wording. Chcek if it set to constant transmission or very frequent one. You can try reducing the rate to longer period of time. I do not thing that the issue is learning how to ask, if you do not know the basic of Networking and the terms that are used it is hard to organize a coherent question. You can read a little about Basic networking and Wireless here, http://www.ezlan.net Jack (MVP-Networking). Show quoteHide quote "J David Ellis" <nospam@home.org> wrote in message news:n6OdnWblaKsW2MLYnZ2dnUVZ_u6dnZ2d@sti.net... > The client is a Linksys Wireless-G USB adapter connected to > a USB1 port and the AP (access point) is a Netgear WPN802v2 > about ten feet from the client. > > The XP SP2 Performance Monitor shows a steady 5kB/sec > (approximately) received by the client and zero sent. At > about 50-second intervals the receive rate drops briefly to > zero, rises to about 10kB/sec and promptly drops to the 5kB > receive rate. The connection is otherwise idle. The client > can access the internet normally through the AP. > > Any suggestions for a diagnostic approach would be > appreciated, including teaching this networking neophyte how > to ask the right question. > > --David Jack (MVP-Networking). <j***@newgroup.com> wrote:
> Hi The OP could try lengthening the DTIM Period on the access points> > If your computer was sending back a lot of data without you doing any thing > it might be a sign of Spyware or some sort of Trojan. Since your computer > does not sent back any thing I would Not worry too much about it. > > Access Points have a Broadcast Beacon that transmits periodically a burst of > info to announce its existence and identified itself, SSID. > > I am not familiar with your specific unit. Log to the AP's menu and look for > SSID broadcast rate or similar wording. Chcek if it set to constant > transmission or very frequent one. You can try reducing the rate to longer > period of time. configuration page. The AP will then buffer multicast and broadcast frames and let stations (STA) sleep for longer periodes. This will save battery life at the expense of timely delivery. Axel Hammerschmidt wrote:
Show quoteHide quote > Jack (MVP-Networking). <j***@newgroup.com> wrote: Beacon Interval range is 20-1000ms. 100ms is the default. I > >> Hi >> >> If your computer was sending back a lot of data without you doing any thing >> it might be a sign of Spyware or some sort of Trojan. Since your computer >> does not sent back any thing I would Not worry too much about it. >> >> Access Points have a Broadcast Beacon that transmits periodically a burst of >> info to announce its existence and identified itself, SSID. >> >> I am not familiar with your specific unit. Log to the AP's menu and look for >> SSID broadcast rate or similar wording. Chcek if it set to constant >> transmission or very frequent one. You can try reducing the rate to longer >> period of time. > > The OP could try lengthening the DTIM Period on the access points > configuration page. The AP will then buffer multicast and broadcast > frames and let stations (STA) sleep for longer periodes. This will save > battery life at the expense of timely delivery. set it to 1000ms and saw no change in the client's received data rate. The DTIM range is 1 to 255. Default is 1. I set it to 100 and saw no change in the client's received data rate. J David Ellis <nospam@home.org> wrote:
Show quoteHide quote > Axel Hammerschmidt wrote: Have you enabled power save on the station (STA)? Otherwise setting a> > > Jack (MVP-Networking). <j***@newgroup.com> wrote: > > > >> Hi > >> > >> If your computer was sending back a lot of data without you doing any > >> thing it might be a sign of Spyware or some sort of Trojan. Since your > >> computer does not sent back any thing I would Not worry too much about > >> it. > >> > >> Access Points have a Broadcast Beacon that transmits periodically a > >> burst of info to announce its existence and identified itself, SSID. > >> > >> I am not familiar with your specific unit. Log to the AP's menu and > >> look for SSID broadcast rate or similar wording. Chcek if it set to > >> constant transmission or very frequent one. You can try reducing the > >> rate to longer period of time. > > > > The OP could try lengthening the DTIM Period on the access points > > configuration page. The AP will then buffer multicast and broadcast > > frames and let stations (STA) sleep for longer periodes. This will save > > battery life at the expense of timely delivery. > > Beacon Interval range is 20-1000ms. 100ms is the default. I > set it to 1000ms and saw no change in the client's received > data rate. > > The DTIM range is 1 to 255. Default is 1. I set it to 100 > and saw no change in the client's received data rate. DTIM value has no effect (which I neglected to say). 
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