[Irish Broadband DSL] Slow (specific) website loading

Random

Here's 2 sample tracerts.

  1    <1 ms    <1 ms    <1 ms  My Router
  2     2 ms     1 ms     1 ms  My Modem
  3    41 ms    39 ms    39 ms  89.124.240.1
  4    40 ms    39 ms    39 ms  DN41-ge-0-1-0-15-deg.irishbroadband.ie [89.127.196.37]
  5    39 ms    39 ms    40 ms  DN07-ae0-2-ibis-gw-1.irishbroadband.ie [89.127.197.1]
  6    40 ms    39 ms     *     213.242.106.57
  7   122 ms   132 ms   198 ms  ae-11-11.car1.Dublin1.Level3.net [4.69.136.93]
  8    52 ms    50 ms    53 ms  ae-5-5.ebr1.London1.Level3.net [4.69.136.90]
  9    58 ms    54 ms    53 ms  ae-1-100.ebr2.London1.Level3.net [4.69.132.118]
 10   118 ms   124 ms   126 ms  ae-43.ebr1.NewYork1.Level3.net [4.69.137.74]
 11   122 ms   126 ms   126 ms  ae-71-71.csw2.NewYork1.Level3.net [4.69.134.70]
 12   124 ms   126 ms   126 ms  ae-73-73.ebr3.NewYork1.Level3.net [4.69.134.101]
 13   165 ms   162 ms   162 ms  ae-6.ebr2.Dallas1.Level3.net [4.69.137.121]
 14   153 ms   159 ms   162 ms  ae-92-92.csw4.Dallas1.Level3.net [4.69.136.150]
 15   156 ms   154 ms   154 ms  ae-44-99.car4.Dallas1.Level3.net [4.68.19.198]
 16   186 ms   160 ms   160 ms  THE-PLANET.car4.Dallas1.Level3.net [4.71.122.2]
 17   158 ms   159 ms   160 ms  te7-2.dsr02.dllstx3.theplanet.com [70.87.253.26]
 18   158 ms   159 ms   160 ms  te3-3.dsr02.dllstx2.theplanet.com [70.87.253.126]
 19   158 ms   161 ms   167 ms  po2.car06.dllstx6.theplanet.com [12.96.160.40]
 20   158 ms   160 ms   158 ms  pantera.websitewelcome.com [74.54.18.226]

Trace complete.

  1    <1 ms    <1 ms    <1 ms  My Router
  2     1 ms     1 ms     1 ms  My Modem
  3    39 ms    38 ms    39 ms  89.124.240.1
  4   108 ms    39 ms    38 ms  DN41-ge-0-1-0-15-deg.irishbroadband.ie [89.127.196.37]
  5    39 ms    38 ms    39 ms  DN07-ae0-2-ibis-gw-1.irishbroadband.ie [89.127.197.1]
  6    39 ms    38 ms    39 ms  213.242.106.57
  7    38 ms    39 ms    40 ms  ae-11-11.car1.Dublin1.Level3.net [4.69.136.93]
  8    49 ms    50 ms    52 ms  ae-5-5.ebr1.London1.Level3.net [4.69.136.90]
  9    60 ms    53 ms    53 ms  ae-1-100.ebr2.London1.Level3.net [4.69.132.118]
 10   125 ms   126 ms   126 ms  ae-43.ebr1.NewYork1.Level3.net [4.69.137.74]
 11     *      120 ms   125 ms  ae-71-71.csw2.NewYork1.Level3.net [4.69.134.70]
 12   119 ms   121 ms   123 ms  ae-73-73.ebr3.NewYork1.Level3.net [4.69.134.101]
 13   165 ms   162 ms   161 ms  ae-6.ebr2.Dallas1.Level3.net [4.69.137.121]
 14   154 ms   162 ms   162 ms  ae-92-92.csw4.Dallas1.Level3.net [4.69.136.150]
 15   157 ms   154 ms   153 ms  ae-44-99.car4.Dallas1.Level3.net [4.68.19.198]
 16   161 ms   159 ms   159 ms  THE-PLANET.car4.Dallas1.Level3.net [4.71.122.2]
 17   159 ms   160 ms   159 ms  te7-2.dsr02.dllstx3.theplanet.com [70.87.253.26]
 18   159 ms   158 ms   159 ms  te3-3.dsr02.dllstx2.theplanet.com [70.87.253.126]
 19   159 ms   159 ms   166 ms  po2.car06.dllstx6.theplanet.com [12.96.160.40]
 20   162 ms   160 ms   159 ms  pantera.websitewelcome.com [74.54.18.226]

Trace complete.

I'm with Irish Broadband DSL using their 3meg package.

I'm having delays when trying to load up my cPanel (www.cpanel.net is the software for anyone not familiar, basically it allows me to manage my web hosting) from https://74.54.18.226/cpanel (and also from http). Sometimes the login prompt will show right away and sometimes it could take 20 seconds. When I do login then it can sometimes take up to a minute for the page to load fully and sometimes it will load within about 10 or 15 seconds. Sometimes the page will timeout halfway through loading.

Same problem exists on 2 PCs I have. If I plug in my phone to my PC and use O2 to browse the web the response times seem much faster on that website and generally I don't have any problems. This leads me to believe the problem is with IBB but they blame the guys who run the server and the guys who run the server blame IBB.

I use this same server to check emails and to load a website and I don't notice any (significant) delays or slowdowns.

I have tried editing the MTU on my modem / router / PC as this was suggested to me for other issues long ago, but having had to real luck they've all been changed back to the defaults or the ISP recommended.

Can anyone help me diagnose where the problem is here? Looking at my tracert it would seem there's far too many hops, but I'm not really sure?

Thanks and let me know if you need any more info.

BluE-WinG

Hey, I'm on the exact same package as you. I was having disconnect issues, timeouts and so forth for months on end.

I changed my MTU value to 1460 and now everything works perfectly. I could not comprehend how Irish broadband 3mb DSL could be so reliant on this value and how bad performance was without it, Can anyone explain this?

Oh and in terms of hops, it is similar for me, it seems to like hopping through these level3.net larks.

MrVestek

Yes. You were putting too much overhead on the connection causing too much information to flow to the devices connected to the network at once. At best DSL overhead is 8 bytes so the MTU should be 1492 on most DSL connection.

*edit*

Ahh, I know what your problem is. IBB were right then, your CPanel host is using an invalid certficate for that particular CPanel, it's pointing to websitewelcome.com this will cause issues in most browsers whilst trying to connect using SSL no matter what port it's on.

So yup, it's the server.

Techbot

I'm running a small streaming radio station and recently moved the server, since then I've had nothing but problems.

I noticed when trace routing to the stream provider, the route goes from

Galway --- Dublin --- London --- Amsterdam --- Dusseldorf --- Hamburg --- Stream Provider ( which is in the UK - probably London)

Notice in the image I've supplied the Dublin to Hamburg jumps are all through a network called Level13.net.

This is the same network as supplied in the info above by Random ie 4.69.***.***

What is Level3.net? Why does my route jump all around Europe before returning to London?

MrVestek

Techbot wrote: »

What is Level3.net? Why does my route jump all around Europe before returning to London?

You might wanna ask Eircom about that, seeing as IBB are only reselling their bitstream.

*edit*

Actually, looking at that trace it looks like your on their breeze service and not DSL.

daffy_duc

Achilles wrote: »

You might wanna ask Eircom about that, seeing as IBB are only reselling their bitstream.

*edit*

Actually, looking at that trace it looks like your on their breeze service and not DSL.

You're right, that looks like a Breeze service. The DSL would go straight to DEG and then out to their upstreams. In this case, it looks like Level3 are their upstream for that route.
I qualify that (for that route), because I'm pretty sure they'd have more than one upstream, and that Level3 were simply used for that as being the best for that particular destination.

The IP that he's tracing to (212.72.165.18) looks to be located in Hamburg, as you can see by this WHOIS query

So its not returning to London, its going along the most direct path to Hamburg.

MrVestek

daffy_duc wrote: »

You're right, that looks like a Breeze service. The DSL would go straight to DEG and then out to their upstreams. In this case, it looks like Level3 are their upstream for that route.
I qualify that (for that route), because I'm pretty sure they'd have more than one upstream, and that Level3 were simply used for that as being the best for that particular destination.

The IP that he's tracing to (212.72.165.18) looks to be located in Hamburg, as you can see by this WHOIS query

So its not returning to London, its going along the most direct path to Hamburg.

I had actually done that investigation myself already but never bothered to reply as I'm a sick creature today (blergh) anyways yes whilst they are hosting a .co.uk domain the server is actually located in hamburg in Germany.

You are getting slightly higher pings than normal going through the Level3 network but that's nothing to do with IBB, it's Level3's internal network which at the time offered the lowest latency to that particular server hence the router decided to send you in that direction.

IBB's Breeze network uses burst transmission however, it's not a constant stream of data. If you're trying to stream on the likes of shoutcast sometimes this can be a problem but if you get through to someone in support who knows what they're doing they can sort this out for you.

(Hint: ask them to lower the max burst rate from 5000ms to 1000ms, that should sort it).