Speed Decrease

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lonepuppy

9 posts

Wannabe Geek

Topic # 83674 20-May-2011 09:18

Hi Guys,
I was getting 18Mbps on speedtest.net through xtra full speed plan
I have changed providers to worldnet full speed plan and have lost 3Mbps on speedtest.net

I have spoken to worldnet who assure me that the speeds should be the same because they use the backbone telecom network.

Is it possible that telecom would be limiting the port speed to give there customers better speeds?

I have done isolation tests and have tried 3 different modems and still cant get it back to the 18Mbps it was.

Any advise would be greatly accepted

wjw

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Reply # 471472 20-May-2011 10:31

Which speedtest site are you testing to?

Ragnor

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Reply # 471483 20-May-2011 11:04

Telecom Retail and Worldnet have access to the same Chorus (Telecom Access Services) and Telecom Wholesale services for ADSL delivery, these are regulated by the ComCom.

If you are outside of Auckland their are two probable reasons for the difference:

Reason 1: Local handover points

Worldnet probably only has a handover point in Auckland so your traffic may be on the DSL backhaul network for longer than Telecom who have many regional handover points.

Simplified explanation....

Worldnet : Your line > cabinet/exchange > backhaul > backhaul > backhaul > handover point (Auckland) > ISP Network

Telecom: Your line > cabinet/exchange > backhaul > handover point (local) > ISP Network

Reason 2: EUBA ethernet backhaul

The newest and best service that Telecom wholesale offers to ISP's (apart from VDSL trials) is EUBA, this has ethernet backhaul and handover (as opposed to the old ATM backhaul and handover).

Telecom retail now uses Telecom wholesale EUBA everywhere where a cabinet or exchange supports it.

Worldnet probably aren't provisioning customers on EUBA yet

Hopefully someone from Telecom or Worldnet might be able to confirm what I've said but from what I've gathered this is the case and either of the above reasons could be the cause of the speed drop you are seeing.

Edit: Fixed mistake where I mentioned Xnet instead of Worldnet, same reasons still apply.

johnr

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Reply # 471485 20-May-2011 11:08

Why did you change provider?

Price?

lonepuppy

9 posts

Wannabe Geek

Reply # 471493 20-May-2011 11:25

Hi,
Thanks for the replies
WJW i use speedtest.net and use WorldXchange (Auckland) to run the speedtest against

Ragnor you have given me 100% more information then Worldnet support has been able to offer, as a result i am contacting worldnet again with the answers you have provided to see if we can get things sorted

JohnR i did base it on price and as i get 50gb and phone for $109 a month but didn't realize my speed would be affected, guess i cant get the best of both worlds

lonepuppy

9 posts

Wannabe Geek

Reply # 471511 20-May-2011 12:08

just been on the phone to telecom, and they wont tell me anything about anything because i am no longer with them

Thanks Telecom

NonprayingMantis

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Reply # 471517 20-May-2011 12:14

lonepuppy: just been on the phone to telecom, and they wont tell me anything about anything because i am no longer with them

Thanks Telecom

Thats because they are not allowed to. If they did they could be fined heavily.

See the commerce commission if you don't like it.

and to answer your question from the OP
"Is it possible that telecom would be limiting the port speed to give there customers better speeds?"

No. For the same reason as above. It would be a breach of the separation undertakings and they could be heavily fined.

lonepuppy

9 posts

Wannabe Geek

Reply # 471523 20-May-2011 12:28

Thanks,
Ill go back to worldnet and see if they can provide any more information
man you notice 3Mbps when you aint got it.

Thanks Guys

johnr

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Reply # 471526 20-May-2011 12:30

lonepuppy: just been on the phone to telecom, and they wont tell me anything about anything because i am no longer with them

Thanks Telecom?

What else did you expect?

johnr

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Reply # 471527 20-May-2011 12:31

lonepuppy: Thanks,
Ill go back to worldnet and see if they can provide any more information
man you notice 3Mbps when you aint got it.

Thanks Guys??

Your internet is working your new ISP has not promised you a speed of 18mbps

You have nothing to complain about!

NonprayingMantis

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Reply # 471532 20-May-2011 12:41

lonepuppy: Thanks,
Ill go back to worldnet and see if they can provide any more information
man you notice 3Mbps when you aint got it.

Thanks Guys

really? I think I would struggle to notice the difference between 18Mbps and 15Mbps.

15Mbps is more than enough to stream HD youtube for example with no buffering. Maybe file downloads would happen a little bit slower, but I doubt it would be noticable.

lonepuppy

9 posts

Wannabe Geek

Reply # 471631 20-May-2011 15:49

Worldnet told me there would be no difference between them and telecom at all, i was just trying to figure out why it would happen when i was told before signing up to them that no speeds would change

lonepuppy

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Wannabe Geek

Reply # 471632 20-May-2011 15:51

i was able to download files at 1.65MBps and now i cant get anything over 1MBps

Ragnor

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Reply # 471707 20-May-2011 19:40

Residential ADSL is a best effort service, no gaurantee of minimum speed or performance at all on any ISP.

webwat

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Reply # 472064 22-May-2011 04:43

lonepuppy: i was able to download files at 1.65MBps and now i cant get anything over 1MBps

Both Worldnet and Xnet peer at APE, so its likely a variation of how Telecom send traffic to the handover point. Unlikely to be congestion but if it was then you are still getting excellent performance that is better than I get on Slingshot (who also peer so speed should be same). The Xnet speedtest server probably has a different route to Telecom though, so the speedtest on Telecom could easily be different and would not reflect download speeds.

However You weren't downloading at 18 megs anyway, 1.65MB is only 13Mbit/s, so thats because of the route to wherever you downloaded from. Port speed is completely different, that more related to your modem and you would have been posting modem stats here if that was a problem. And yes, its "best efforts" so nobody can even start to promise download speeds from a particular server from a home connection.

Qualified in business, certified in fibre, stuck in copper, have to keep going ^_^

insane

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Reply # 472695 23-May-2011 00:11

Well I guess we also do have to ask whether the sync rate has changed since the change over.

It may sound silly but have a look at your current modem states, then power your modem off for 15-20 minutes and turn it back on and look at the states. I bet the sync rate will increase slightly and you'll be getting speeds closer to what you had before.

This is not to say that what's been said above is not correct as the others who have shared their reasoning have been spot on.

One last thing to test too after trying the above, does the speed change throughout the day? If so then Worldnet may have some handover congestion.