Hi, It looks my first post on these forums is an asking for help, but this thing bothers me for a long time. So, here's the story.
Initially I had 756kbps DSL connection. I've decided to upgrade it and I bought 2.5 Mbps connection. After waiting for 2 weeks and no speed change I've contacted my ISP (infrastructure provider) to check what's the matter. They've told me that the infrastructure in my house can support 1.5 Mbps max, so I've agreed to that.
Initially everything was fine, but gradually the things have been deteriorating until the point where I'm getting dial-up and sub dial-up speeds on downloads. I've scanned my PC with everything possible, but no virus was found. I've installed a fresh Windows copy on the other PC and had the same result. Once, I've returned from abroad and having jet lag didn't go to bed till early morning. I've checked the download speed and it was ok, but any other time it's abysmal. I don't know if the problem is configuration, ISP or infrastructure. Should I tweak something or should I ditch the DSL company and go for cable connection?
Here's my configuration:
1 router ECI b-focus 312+ which is connected to Linksys DSL-2450T which is not working as modem (only routing) and is connected to 2 PCs.
The speeds are poor on both PCs. It doesn't get any better if I connect one of the PC's directly to ECI bypassing the Linksys router.
Dial-up speeds with DSL
Here's some more data on my system:
Win XP Pro SP2
TCP Analyzer results:
« SpeedGuide.net TCP Analyzer Results »
Tested on: 10.20.2008 14:54
IP address: 87.68.xxx.xx
TCP options string: 020405500103030101010402
MSS: 1360
MTU: 1400
TCP Window: 128480 (NOT multiple of MSS)
RWIN Scaling: 1 bits (2^1=2)
Unscaled RWIN : 64240
Recommended RWINs: 65280, 130560, 261120, 522240, 1044480
BDP limit (200ms): 5139kbps (642KBytes/s)
BDP limit (500ms): 2056kbps (257KBytes/s)
MTU Discovery: ON
TTL: 44
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)
*******************************
tracert results:
Tracing route to http://www.yahoo-ht3.akadns.net [87.248.113.14]
over a maximum of 30 hops:
1 * * * Request timed out.
2 14 ms 13 ms 12 ms [87.68.208.254]
3 * 13 ms 17 ms [212.199.17.7]
4 15 ms 12 ms 13 ms [212.199.139.45]
5 71 ms 72 ms 72 ms [80.179.166.21]
6 * 367 ms * [77.67.61.145]
7 387 ms 387 ms 392 ms [89.149.187.2]
8 395 ms 402 ms 397 ms [213.200.67.202]
9 398 ms 392 ms 390 ms [87.248.101.15]
10 392 ms 389 ms 388 ms http://www.yahoo.com [87.248.113.14]
Trace complete.
Win XP Pro SP2
TCP Analyzer results:
« SpeedGuide.net TCP Analyzer Results »
Tested on: 10.20.2008 14:54
IP address: 87.68.xxx.xx
TCP options string: 020405500103030101010402
MSS: 1360
MTU: 1400
TCP Window: 128480 (NOT multiple of MSS)
RWIN Scaling: 1 bits (2^1=2)
Unscaled RWIN : 64240
Recommended RWINs: 65280, 130560, 261120, 522240, 1044480
BDP limit (200ms): 5139kbps (642KBytes/s)
BDP limit (500ms): 2056kbps (257KBytes/s)
MTU Discovery: ON
TTL: 44
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)
*******************************
tracert results:
Tracing route to http://www.yahoo-ht3.akadns.net [87.248.113.14]
over a maximum of 30 hops:
1 * * * Request timed out.
2 14 ms 13 ms 12 ms [87.68.208.254]
3 * 13 ms 17 ms [212.199.17.7]
4 15 ms 12 ms 13 ms [212.199.139.45]
5 71 ms 72 ms 72 ms [80.179.166.21]
6 * 367 ms * [77.67.61.145]
7 387 ms 387 ms 392 ms [89.149.187.2]
8 395 ms 402 ms 397 ms [213.200.67.202]
9 398 ms 392 ms 390 ms [87.248.101.15]
10 392 ms 389 ms 388 ms http://www.yahoo.com [87.248.113.14]
Trace complete.
Durring the decrease of speeds period did you add any phones in the house especially cordless? Is there any clicks on the line when you pick up the phone?
it could be a bad filter throwing the speeds off if a call comes in ,and the net slows down the filter is what keeps the data data ,and voice voice.
Keep it simple you should't need two routers on the xp machine make sure the software friewall in control pranel advavaced tab that unpnp is checke to allow ,and in icmp check the first two boxes in the firewall configuration. http://technet.microsoft.com/en-us/libr ... 57029.aspx
With three friewalls the two routers ,and the xp firewall your triple nating which is not good that means the data is getting bottlencecked in three places which any firewall/router will cause more tax on the traffic but less devices ,and less rules makes for an easier way for that data to get though that destanation.
A few of the tracerects do suggest promblems oast the isp's end even if you did call have them check it out it might be frutile it looks like a routing issue that is the main cause of that delay.
it could be a bad filter throwing the speeds off if a call comes in ,and the net slows down the filter is what keeps the data data ,and voice voice.
Keep it simple you should't need two routers on the xp machine make sure the software friewall in control pranel advavaced tab that unpnp is checke to allow ,and in icmp check the first two boxes in the firewall configuration. http://technet.microsoft.com/en-us/libr ... 57029.aspx
With three friewalls the two routers ,and the xp firewall your triple nating which is not good that means the data is getting bottlencecked in three places which any firewall/router will cause more tax on the traffic but less devices ,and less rules makes for an easier way for that data to get though that destanation.
A few of the tracerects do suggest promblems oast the isp's end even if you did call have them check it out it might be frutile it looks like a routing issue that is the main cause of that delay.
Comptia a+ n+
Thanks for the advice, mccoffee. I can try and eliminate ECI router from the equation as Linksys is also a modem, but I did not change anything in my configuration to cause the speed drop, however it happened.
I suspected my ISP for quite some time. In my MMORPG days I was unable to use any Ventrillo server because of terrible routing (although Teamspeak was working fine). I see there's a ping spike between hops 5 and 6. unfortunately I didn't check tracert when the speeds were good to compare it now.
On the other hand if the routing is that terrible for that ISP, it should affect everyone, but I don't hear complaints about my ISP, so I think the problem is somewhere else.
P.S. To your questions - I do have a cordless phone, but it was here long before I've upgraded my connection. I don't hear any clicks on the line when I pick up the phone. But I think that the wiring in the house is very old. They've even gave me a special plug so that I could be able to connect the filter to the phone socket in the wall.
I suspected my ISP for quite some time. In my MMORPG days I was unable to use any Ventrillo server because of terrible routing (although Teamspeak was working fine). I see there's a ping spike between hops 5 and 6. unfortunately I didn't check tracert when the speeds were good to compare it now.
On the other hand if the routing is that terrible for that ISP, it should affect everyone, but I don't hear complaints about my ISP, so I think the problem is somewhere else.
P.S. To your questions - I do have a cordless phone, but it was here long before I've upgraded my connection. I don't hear any clicks on the line when I pick up the phone. But I think that the wiring in the house is very old. They've even gave me a special plug so that I could be able to connect the filter to the phone socket in the wall.
If you have older wirring maybe look into how much will a new nid re wirring will cost ya if your phone lines are older ,and it's random spikes that could be the source right there.
If you know of any phone techs electrician's that can re wirring maybe give this guide a try ,or have the phone company replace iether way. http://dslnuts.com/DSLwiring.shtml there is other rewrring methonds on the net too just an fyi.
If you know of any phone techs electrician's that can re wirring maybe give this guide a try ,or have the phone company replace iether way. http://dslnuts.com/DSLwiring.shtml there is other rewrring methonds on the net too just an fyi.
Comptia a+ n+
mccoffee,
Thanks for posting the link. I have a much older house with full basement and the old 40's three post connector for the service line inside. Was easy for me to update all inside telephone wiring 2 years ago when telco put in a new service line. Put in seperate jack for the modem, but still have about 6 filters for other outlets. Wouldn't be hard to get down to one.
Would be nice if he has similar situation.
Thanks for posting the link. I have a much older house with full basement and the old 40's three post connector for the service line inside. Was easy for me to update all inside telephone wiring 2 years ago when telco put in a new service line. Put in seperate jack for the modem, but still have about 6 filters for other outlets. Wouldn't be hard to get down to one.
Would be nice if he has similar situation.
This morning I've connected my 2 PCs directly to Linksys DSL 2540T eliminating the ECI modem/router thus eliminating 1 NAT, I've also replaced the filter with the new one. Unfortunately nothing changed. Strange, but I can't run tracert now (probably router firewall blocks it, will check what I have to unblock later).
Right now I'm struggling to download 50Mb file and time to completion is approx. 2 hours with average speed 6KBps. Something is very wrong with this connection. Another thing is that while downloading a file with this turtle speed I still can't listen to Internet radio because it buffers all the time, so the bandwidth is saturated. No way I'm paying for 1.5Mbps and getting this crap...
Another thing that may give some info to someone who may know why this is happening: sometimes (especially when something is being downloaded for a long time) I can't surf the web. The browser tells it can't find any page, like the DNS is lost or something, but the download is still going, so that the connection is still up and running.
Thanks for help, guys.
Right now I'm struggling to download 50Mb file and time to completion is approx. 2 hours with average speed 6KBps. Something is very wrong with this connection. Another thing is that while downloading a file with this turtle speed I still can't listen to Internet radio because it buffers all the time, so the bandwidth is saturated. No way I'm paying for 1.5Mbps and getting this crap...
Another thing that may give some info to someone who may know why this is happening: sometimes (especially when something is being downloaded for a long time) I can't surf the web. The browser tells it can't find any page, like the DNS is lost or something, but the download is still going, so that the connection is still up and running.
Thanks for help, guys.
if they are both modem router combos you might want to call the isp to see if the settings are correct on the modem end of it have them check the line.
It could be that modem/router since you have two they are not provision right ,or some setting is off call them up ,and see check for new firmware after the call.
It could be that modem/router since you have two they are not provision right ,or some setting is off call them up ,and see check for new firmware after the call.
Comptia a+ n+