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very slow downloads with verizon dsl

QCassidy352

QCassidy352

macrumors G5
Original poster
Mar 20, 2003
12,183
6,341
Bay Area
my gf and I recently set up a wireless/wired (macbook/intel imac) home network with verizon dsl and a linksys wireless router. Internet is fine, but downloads are soooo slooooow. A TV show from itunes took several hours to download. I've seen other downloads go at 11 kbps.

Before you say it's the linksys router, the speed is the same with the imac wired directly to the dsl modem. I called verizon and they are no help at all.

please help... these speeds are awful!

Oh, and FWIW, in the network utility, here are some ping results:
Router:
Ping has started ...

PING 192.168.1.1 (192.168.1.1): 56 data bytes
64 bytes from 192.168.1.1: icmp_seq=0 ttl=64 time=1.787 ms
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=1.515 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=1.620 ms
64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=1.435 ms
64 bytes from 192.168.1.1: icmp_seq=4 ttl=64 time=1.503 ms
64 bytes from 192.168.1.1: icmp_seq=5 ttl=64 time=1.527 ms
64 bytes from 192.168.1.1: icmp_seq=6 ttl=64 time=1.517 ms
64 bytes from 192.168.1.1: icmp_seq=7 ttl=64 time=1.505 ms
64 bytes from 192.168.1.1: icmp_seq=8 ttl=64 time=1.950 ms
64 bytes from 192.168.1.1: icmp_seq=9 ttl=64 time=1.481 ms

--- 192.168.1.1 ping statistics ---
10 packets transmitted, 10 packets received, 0% packet loss
round-trip min/avg/max/stddev = 1.435/1.584/1.950/0.153 ms


Google:
Ping has started ...

PING www.l.google.com (216.239.37.99): 56 data bytes
64 bytes from 216.239.37.99: icmp_seq=0 ttl=245 time=50.937 ms
64 bytes from 216.239.37.99: icmp_seq=1 ttl=245 time=60.360 ms
64 bytes from 216.239.37.99: icmp_seq=2 ttl=245 time=47.054 ms
64 bytes from 216.239.37.99: icmp_seq=3 ttl=246 time=69.335 ms
64 bytes from 216.239.37.99: icmp_seq=4 ttl=247 time=96.193 ms
64 bytes from 216.239.37.99: icmp_seq=5 ttl=245 time=46.746 ms
64 bytes from 216.239.37.99: icmp_seq=6 ttl=246 time=71.231 ms
64 bytes from 216.239.37.99: icmp_seq=7 ttl=245 time=56.179 ms
64 bytes from 216.239.37.99: icmp_seq=8 ttl=246 time=60.969 ms
64 bytes from 216.239.37.99: icmp_seq=9 ttl=246 time=47.175 ms

--- www.l.google.com ping statistics ---
10 packets transmitted, 10 packets received, 0% packet loss
round-trip min/avg/max/stddev = 46.746/60.618/96.193/14.577 ms
 
Does the Verizon supplied router/modem have any diagnostics?

For the Westell 327W I have with Verizon DSL there is a status page that gives you some details about your connection speed and quality. If you can find that, post it.

B
 
Uh oh, I have a Westell 6100 router with Verizon that I plan on hooking up to an iMac. I hope there are no problems. :(


You can try this to see what it's giving you for your download speed.
 
haha, I just found that site a few minutes before you posted it. The first time it gave my dl speed around 750, which is what it should be. The next two times it was 350-400. But even that would be better than what I'm experiencing most of the time.
 
QCassidy352 said:
it's a westall 6110. where would I find a status page for it?
Click to expand...

For my 327W it's at http://192.168.1.1/transtat.htm

I see:
Code: 
Transceiver Revision: 01.00.09.00	 
Vendor ID Code:        4	 
Line Mode:               G.DMT Mode	 
Data Path:               Interleaved	 
Transceiver Information	Down Stream Path	Up Stream Path
DSL Speed (Kbits/Sec)	3360	800
Margin (dB)	20.0	10.0
Line Attenuation (dB)	11.0	6.0
Transmit Power (dBm)	4.8	11.0

B
 
How far are you from your closest DSL providers central office? DSL's performance decreases as your distance from it's central office location. Can get a cable modem? Usually cable service is faster and more reliable, in my experience.
 
velocityg4 said:
How far are you from your closest DSL providers central office? DSL's performance decreases as your distance from it's central office location. Can get a cable modem? Usually cable service is faster and more reliable, in my experience.
Click to expand...

yeah, but also much more expensive. :-/ And now we're locked in to this contract with verizon for 6 months. I don't know where verizon's offices are... how would I find that out?

MACDRIVE said:
What is the minimum connection speed that Verizon promised you?
Click to expand...

well, I don't think they really promised anything. They said speed would vary with usage at the time... but this is ridiculous!

balamw, I'm not seeing anything but a blank page at that address. :(

FWIW, it's been better since I posted this thread. I saw dl speeds up to 100 kbps today, so that's a whole lot better than 11 kbps. :rolleyes:
 
Most of our DSL problems over the years have been on the wires themselves, and they can be frustratingly intermittent and variable, depending mainly on weather conditions. If you have an open on the wire, dampness can cause it to ground out or short. This is assuming you have overhead wires for your telephone system. The key I've found is to keep after them about the problems. I got to know my local line guys so well that they eventually gave me the direct phone number of the local dispatcher. So now when I have a DSL problem, I call him directly.
 

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QCassidy352 said:
balamw, I'm not seeing anything but a blank page at that address. :(

FWIW, it's been better since I posted this thread. I saw dl speeds up to 100 kbps today, so that's a whole lot better than 11 kbps. :rolleyes:
Click to expand...

It just sounds like you may have lots of noise on your line. If you can find a page like the one I linked to you can see if the margins are low and the attenuation is high you're in trouble.

It may sound strange, but I had similar problems (intermittent superslow DSL) a few years back and tracked it down to a particular cheapo halogen torchiere that wasn't even in the same room as the DSL. When it was on DSL was worse than dial-up but off the DSL was around the promised 384 kbps.

B
 
try this from the terminal:

sudo sysctl -w net.inet.tcp.sendspace=65536
sudo sysctl -w net.inet.tcp.recvspace=65536
sudo sysctl -w net.inet.tcp.delayed_ack=0

let me know if that helps you...
 
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