Tweber
02-08-06, 10:28 PM
After 2 hours of searching for the forums for any information, I'm brave enough to ask.
I'm 1 mile from the tower that supplies my area with Wireless Broadband. I don't have LOS but the provider tells me that with their equipment and my location we don't need line of site.
My connection is supposed to be 1.5MB d/l and 256Kbps u/l.
The connection will run fine for a few days, then the download drop off to 120Kbps. It will stay there for a few days then come back to normal. When it does drop off I've noticed that it will be running fine, then the connection will drop totally for about 20 seconds. When it comes back up the download is stuck at the 120Kbps but the upload is normally fine and even sometimes the upload will jump to 450Kbps+.
I have 3 systems running on my network. 2 desktops win/xp sp2 and a laptop win/xp sp2 running through a Linksys-802.11g wireless g router. The 2 desktops are wired and the laptop is wireless. There is an antenna on the roof of my house that runs into the router.
When the connection drops, all three machines are affected. I tried running the connection straight to just one laptop bypassing the router but there was no change.
When I run a link capacity test through Canopy while the connection is running bad these are the results:
Stats for LUID: 25 Test Duration: 2 Pkt Length: 1522
Downlink RATE: 1947648 bps
Uplink RATE: 436224 bps
Downlink Efficiency: 92 Percent
Max Downlink Index: 100
Actual Downlink Index: 92
Expected Frag Count: 7608
Actual Frag Count: 8215
Uplink Efficiency: 94 Percent
Max Uplink Index: 100
Actual Uplink Index: 94
Expected Frag Count: 1704
Actual Frag Count: 1802
Not real sure what I'm looking for, but the efficiency seems good and I believe that is in reference to the connection I'm getting from the tower.
At this point I'm afraid not having Line of Site is causing the issue, but as I said they are telling me that it shouldn't be an issue.
I'm thrown off by the way it will run fine and I can be streaming video, the connection will drop for 20 seconds, then it will come back and I'm at twice the speed of dial up where it will stay for at least the entire day, most of the time it will be like that for up to a week before coming back to working as intended.
Not sure if this helps, or even how to read it, but this is what I get when I run the TCP/IP analyzer:
TCP options string = 020405b40103030201010402
MTU = 1500
MTU is fully optimized for broadband.
MSS = 1460
Maximum useful data in each packet = 1460, which equals MSS.
Default TCP Receive Window (RWIN) = 256960
RWIN Scaling (RFC1323) = 2 bits (scale factor of 4)
Unscaled TCP Receive Window = 64240
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of 8)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)
bandwidth * delay product (Note this is not a speed test):
Your TCP Window limits you to: 10278.4 kbps (1284.8 KBytes/s) @ 200ms
Your TCP Window limits you to: 4111.36 kbps (513.92 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 53 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)
The information posted is ran while the connection is running poor. Speed test just ran was: 120 kbps download / 223 kbps upload
Any suggestions appreciated.
I'm 1 mile from the tower that supplies my area with Wireless Broadband. I don't have LOS but the provider tells me that with their equipment and my location we don't need line of site.
My connection is supposed to be 1.5MB d/l and 256Kbps u/l.
The connection will run fine for a few days, then the download drop off to 120Kbps. It will stay there for a few days then come back to normal. When it does drop off I've noticed that it will be running fine, then the connection will drop totally for about 20 seconds. When it comes back up the download is stuck at the 120Kbps but the upload is normally fine and even sometimes the upload will jump to 450Kbps+.
I have 3 systems running on my network. 2 desktops win/xp sp2 and a laptop win/xp sp2 running through a Linksys-802.11g wireless g router. The 2 desktops are wired and the laptop is wireless. There is an antenna on the roof of my house that runs into the router.
When the connection drops, all three machines are affected. I tried running the connection straight to just one laptop bypassing the router but there was no change.
When I run a link capacity test through Canopy while the connection is running bad these are the results:
Stats for LUID: 25 Test Duration: 2 Pkt Length: 1522
Downlink RATE: 1947648 bps
Uplink RATE: 436224 bps
Downlink Efficiency: 92 Percent
Max Downlink Index: 100
Actual Downlink Index: 92
Expected Frag Count: 7608
Actual Frag Count: 8215
Uplink Efficiency: 94 Percent
Max Uplink Index: 100
Actual Uplink Index: 94
Expected Frag Count: 1704
Actual Frag Count: 1802
Not real sure what I'm looking for, but the efficiency seems good and I believe that is in reference to the connection I'm getting from the tower.
At this point I'm afraid not having Line of Site is causing the issue, but as I said they are telling me that it shouldn't be an issue.
I'm thrown off by the way it will run fine and I can be streaming video, the connection will drop for 20 seconds, then it will come back and I'm at twice the speed of dial up where it will stay for at least the entire day, most of the time it will be like that for up to a week before coming back to working as intended.
Not sure if this helps, or even how to read it, but this is what I get when I run the TCP/IP analyzer:
TCP options string = 020405b40103030201010402
MTU = 1500
MTU is fully optimized for broadband.
MSS = 1460
Maximum useful data in each packet = 1460, which equals MSS.
Default TCP Receive Window (RWIN) = 256960
RWIN Scaling (RFC1323) = 2 bits (scale factor of 4)
Unscaled TCP Receive Window = 64240
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of 8)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)
bandwidth * delay product (Note this is not a speed test):
Your TCP Window limits you to: 10278.4 kbps (1284.8 KBytes/s) @ 200ms
Your TCP Window limits you to: 4111.36 kbps (513.92 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 53 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)
The information posted is ran while the connection is running poor. Speed test just ran was: 120 kbps download / 223 kbps upload
Any suggestions appreciated.