Confusing speed Test IP Results

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nunz

1423 posts

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#154793 7-Nov-2014 17:46

Hi,
I was asked by an elderly friend to have a look at his internet connection as everytime the phone rings it throws skype offline.

Originally I thought it would be a lack of filters but discovered he is on UFB fibre.

Looking into his connectivity I started looking for drop outs and other anomolies. there are a few.

however the big puzzler:

Speedtests are reporting his IP address differently to whatis my ip, grc.coms sheilds up and also different ip addresses between speed tests.

For example.
GRC.com says we are at ip address: 122.58.24.17 - which would agree with the first two speed tests run (see results below). Whatis my ip agrees with that ip address.
Speedtests are showing us as coming from

11/7/2014 4:28 AM GMT

210.55.212.99

28.24 Mb/s

9.98 Mb/s

13 ms

Wellington

~ 50 mi

122.58.24.17

11/7/2014 4:12 AM GMT

122.58.24.17

28.00 Mb/s

6.49 Mb/s

26 ms

Christchurch

< 50 mi

122.58.24.17

11/7/2014 4:04 AM GMT

122.58.24.17

27.80 Mb/s

6.39 Mb/s

36 ms

Christchurch

< 50 mi

and also from ip addresses like 210.55.212.24 and 210.55.212.63 (see attached image below)

A tracert out the door to 8.8.8.8 shows me as being on:
Tracing route to google-public-dns-a.google.com [8.8.8.8]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms 192.168.1.254
2 5 ms 3 ms 7 ms 222-152-1-1.jetstream.xtra.co.nz [222.152.1.1]
3 * * * Request timed out.

The tcom router shows us as only having a fibre connection, no 3G, no adsl fail over.

TNZ_FIBRE

122.58.24.17

255.255.255.255

222.152.1.1

THe fact that the fibre is dropping skype and other download connections when the copper based phone rings is wierd. THe drop outs and jitter on fibre when pinging the first hop is annoying. The changed ip address is just plain puzzling.

The tcom router (HG630b)'s logs shows lots of dropping of UPNP ports and reconnectionof those ports for skype.

<pre>
2014-10-25 23:8:33 User Management upnp 1 UPnP set action(AddPortMapping)[param NewRemoteHost, value:][param NewExternalPort, value:30382][param NewProtocol, value:TCP][param NewInternalPort, value:30382][param NewInternalClient, value:192.168.1.67][param NewEnabled, value:1][param NewPortMappingDescription, value:Skype TCP at 192.168.1.67:30382 (2854)] success !
2014-10-25 23:8:32 User Management upnp 1 UPnP set action(AddPortMapping)[param NewRemoteHost, value:][param NewExternalPort, value:30382][param NewProtocol, value:UDP][param NewInternalPort, value:30382][param NewInternalClient, value:192.168.1.67][param NewEnabled, value:1][param NewPortMappingDescription, value:Skype UDP at 192.168.1.67:30382 (2854)] success !
2014-10-25 23:8:31 User Management upnp 1 UPnP set action(DeletePortMapping)[param NewRemoteHost, value:][param NewExternalPort, value:30382][param NewProtocol, value:TCP] success !
2014-10-25 23:8:29 User Management upnp 1 UPnP set action(DeletePortMapping)[param NewRemoteHost, value:][param NewExternalPort, value:30382][param NewProtocol, value:UDP] success !
2014-10-25 23:1:41 User Management upnp 1 TR064 set action(AddPortMapping) failed ! ErrorCode: 501
2014-10-25 23:1:39 User Management upnp 1 TR064 set action(AddPortMapping) failed ! ErrorCode: 501
2014-10-25 23:1:38 User Management upnp 1 TR064 set action(DeletePortMapping) failed ! ErrorCode: 501
2014-10-25 23:1:37 User Management upnp 1 TR064 set action(DeletePortMapping) failed ! ErrorCode: 501

</pre>

Any thoughts on either the drop outs or the changing ip addresses on speed tests?

Cheers
Shane

PeterReader

5855 posts

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#1171027 7-Nov-2014 17:46

Hello... Our robot found some keywords in your post, so here is an automated reply with some important things to note regarding broadband speeds.

If you are posting regarding DSL speeds please check that

- you have reset your modem and router

- your PC (or other PCs in your LAN) is not downloading large files when you are testing

- you are not being throttled by your ISP due to going over the monthly cap

- your tests are always done on an ethernet connection to the router - do not use wireless for testing

- you read this topic and follow the instructions there.

Make sure you provide information for other users to help you. If you have not already done it, please EDIT your post and add this now:

- Your ISP and plan

- Type of connection (ADSL, ADSL2, VDSL)

- Your modem DSL stats (do not worry about posting Speedtest, we need sync rate, attenuation and noise margin)

- Your general location (or street)

- If you are rural or urban

- If you know your connection is to an exchange, cabinet or conklin

- If your connection is to a ULL or wholesale service

- If you have done an isolation test as per the link above

Most of the problems with speed are likely to be related to internal wiring issues. Read this discussion to find out more about this. Your ISP is not intentionally slowing you down today (unless you are on a managed plan). Also if this is the school holidays it's likely you will notice slower than usual speed due to more users online.

A master splitter is required for VDSL2 and in most cases will improve speeds on DSL connections. Regular disconnections can be a monitored alarm or a set top box trying to connect. If there's an alarm connected to your line even if you don't have an alarm contract it may still try to connect so it's worth checking.

I recommend you read these two blog posts:

- Is your premises phone wiring impacting your broadband performance? (very technical)

- Are you receiving a substandard ULL ADSL2+ connection from your ISP?

I am the Geekzone Robot and I am here to help. I am from the Internet. I do not interact. Do not expect other replies from me.

l43a2

1616 posts

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#1171041 7-Nov-2014 17:53

the speedtest IP thing has been happening for about 2 weeks or so now, not sure what is causing it but its pretty interesting.

chevrolux

4607 posts

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#1171055 7-Nov-2014 18:18

No idea why ringing the phone is dropping his fibre connection - weird. Does it happen every single time? As in, can you replicate it reliably?

But the second hop on the Telecom network has always discarded ICMP.

As for UPnP thing, I would just guess that Skype doesn't maintain a single state for the entire conversation and renegotiates different ports fairly often.

RunningMan

6136 posts

Uber Geek

#1171070 7-Nov-2014 18:41

Cordless phone interfering with the wifi?

Talkiet

4481 posts

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#1171092 7-Nov-2014 19:37

Sorry guys - I know why this is happening and I know it's a bit frustrating. I'll be pointing some people to this thread tomorrow to see if they agree it's worth investigating further.

It was a change made to fix another issue that has caused this. Hopefully it's a short term fix but no guarantees.

Just know you're not going nuts if you see this - and not every Spark customer will see the disagreeing IP addresses either.

Cheers - N

edit: OH! I should add my comment is only around the speedtest IP difference. I have no idea what could be causing the other issue!

edit2: You can usually safely ignore the variable latency to the first hop from many Spark BB connections, for reasons it's not worth going into. If there is genuine congestion anywhere, try checking to hosts slightly further into the network. If the variability is restricted to the first hop, don't worry.

Please note all comments are the product of my own brain and don't necessarily represent the position or opinions of my employer, previous employers, colleagues, friends or pets.

nunz

1423 posts

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Inactive user

#1171984 10-Nov-2014 10:24

RunningMan: Cordless phone interfering with the wifi?

Wired phone.

The main droppages seem to be skype - they are talking on skype nad it drops when the phone rings. am going to make a time to test nad see how oftyen it is happening and if it is 100% reproducable.

The UPNP reconnects are too often - it should negotiate a port and stick there, not change ebvery minurte or two on a longer conversation.

3 - good to know i'm not going nuts on the speed trest thing.

Shane

plambrechtsen

1948 posts

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Inactive user

#1172307 10-Nov-2014 16:59

It looks like his session on UFB has been stable for a while:

Seems like you rebooted the modem on the 8th

Nov 8 2014 12:38:37 NZDT,1165597
Nov 10 2014 10:19:20 NZDT,164443

And it's been stable since (seconds the session has been up!).

Is he using Skype on the PC or some Wifi Softphone thingie? Perhaps there is incompatibilities between the wifi skype phone and the router??

I would highly recommend trying Skype on a PC with a headset directly plugged into the router not over wifi to clear out any possible issues there. Then if it is a wifi skype phone check if there are any firmware updates for it. Plus try changing the AP's channel to something that isn't in use if there is a lot of other wireless access points around (or the DECT phone). I tend to move either to 1 , 6 or 11.