Best way to measure speed - drop in performance after FritzBox replacement

Forums › 2degrees (including Slingshot, Orcon, Flip, Stuff Fibre, MyRepublic, 2talk and Vocus) › Best way to measure speed - drop in performance after FritzBox replacement

BuckoNZ

136 posts

Master Geek

#226364 4-Jan-2018 11:07

Hi,

I was originally a SNAP! fibre customer, which was brought out by 2Degrees. I am on a 100mbps/20mbps fibre plan and never had any issues until recently. Each time I ran a speed test, I would get 98 to 102 mbps download speed and a ping of around 4 ms.

About 6 weeks ago, my FritzBox died. I contacted 2Degrees and they replaced it under waranty - apparently these routers come with a 5 year warranty. Anyway, the new one arrived and I plugged it in and my internet was back up and running. Great.

But I started to notice my connection just wasn't quite a good as it used to be. I ran a speed test and this is typical of the results I now see:

http://www.speedtest.net/my-result/6933580275

I get no where near my 100 mbps download speed and the upload is dreadful - it never even makes 1 mbps. In the test results provided, I'm getting a 4 ms ping response however it's not uncommon to get these in double digits - something that never occured before. And my phone is not working.

I went through 2Degrees support and worked with the guy on the helpdesk - we factory reset the router and bascially his position was, this is normal. That I'm not going to get 100 mbps all the time on a test and the fact that I was getting 80 mbps in the tests yesterday he felt was acceptable. Fine. But when I queried the extremely poor upload speeds he didn't really have an answer. On pushing more, a Chorus fault ticket was raised.

I actually called back the 2Degrees Helpdesk as I forgot to address the phone line issue. I was told that due to the poor upload speeds I was getting, the phone will never work and hopefully once Chorus has done their bit and the upload speed issue is resolved, the phone will come back online.

Just received a text from 2Degrees which basically states:
- Chorus has performed checks at their end.
- Core network appears to be all ok.
- Optical levels are also look good.
- Request that if I suspect the issue is still there to provide TRACERTs and PATHPINGs (but doesn't state to where) to them for further review.

I have checked the phone line and issues persist.

Is there a more accurate way of providing a speed test than www.speedtest.net ?

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8955 posts

Uber Geek

#1928974 4-Jan-2018 12:26

Anything else connected on your network? Looks like upstream saturation to me.

Something backing up to the cloud?

richms

28176 posts

Uber Geek

Trusted

Lifetime subscriber

#1929012 4-Jan-2018 12:45

Upstream saturation should not affect the voip product that they sell you thru their gateway. If it does then the product is faulty and not fit for purpose.

Richard rich.ms

phantomdb

583 posts

Ultimate Geek

Lifetime subscriber

#1929021 4-Jan-2018 12:59

from the few fritzbox's i have encountered, check the rate limit on the connection. i think its under internet, something, something, its usually some upstream/downstream setting in kb 1024/128 or somthing....... try it with 999999/999999 and see if the helps???

Do you have the 7590 model?? (The white one?)

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phantomdb

583 posts

Ultimate Geek

Lifetime subscriber

#1929022 4-Jan-2018 13:05

this thread could be similar?

http://forums.whirlpool.net.au/archive/2690146

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BuckoNZ

136 posts

Master Geek

#1929040 4-Jan-2018 13:38

RunningMan:

Anything else connected on your network? Looks like upstream saturation to me.

Something backing up to the cloud?

Nope. There is no "mass upload" currently occurring.

BuckoNZ

136 posts

Master Geek

#1929042 4-Jan-2018 13:40

richms:

Upstream saturation should not affect the voip product that they sell you thru their gateway. If it does then the product is faulty and not fit for purpose.

Hahaha... I said exactly that to the 2Degrees helpdesk guy when he was reading out the spiel to engage Chorus ("...you may be charged $300..."). I said that's fine so long as 2Degrees acknowledge that under the Consumer Guarantees Act, you are not currently providing me what I'm paying for. That kicked off a 15 minute discussion... :)

BuckoNZ

136 posts

Master Geek

#1929043 4-Jan-2018 13:42

phantomdb:

from the few fritzbox's i have encountered, check the rate limit on the connection. i think its under internet, something, something, its usually some upstream/downstream setting in kb 1024/128 or somthing....... try it with 999999/999999 and see if the helps???

Do you have the 7590 model?? (The white one?)

I believe I found the area you mention. However it's grey out. This section - were the download and upload speeds are defined - is when there is another modem in the mix (ie. another modem is providing the external connection and NOT the FritzBox).

I have the 7490 model.

Sharesies

Trade NZ and US shares and funds with Sharesies (affiliate link).

BuckoNZ

136 posts

Master Geek

#1929046 4-Jan-2018 13:48

phantomdb:

this thread could be similar?

http://forums.whirlpool.net.au/archive/2690146

I have gone through this article. I checked the 'Green Mode' stuff mentioned in one of the posts, but that isn't the issue - I'm setup for 'Power Mode'.

As for "bloatware", which seemed to be the root cause in the thread, I'm using a PC that I installed the OS on myself - there is basically no "factory" stuff on my PC. Plus it's the same PC and setup as before, when I was getting the better speeds.

qwerty123

147 posts

Master Geek

#1929121 4-Jan-2018 14:54

MTU? Seems like PMTUD fails, it's possible that ICMP Fragmentation Needed messages are blocked by your router. You can try to reduce MTU size on your PC to 1300 or similar and re-run speedtest to verify whether MTU is a culprit.

phantomdb

583 posts

Ultimate Geek

Lifetime subscriber

#1929127 4-Jan-2018 15:26

long shot have you tried another fiber compatible modem ?

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BuckoNZ

136 posts

Master Geek

#1929129 4-Jan-2018 15:27

qwerty123:

MTU? Seems like PMTUD fails, it's possible that ICMP Fragmentation Needed messages are blocked by your router. You can try to reduce MTU size on your PC to 1300 or similar and re-run speedtest to verify whether MTU is a culprit.

Using the netsh command, I adjusted the MTU on my Ethernet connection to 1300:

C:\WINDOWS\system32>netsh interface ipv4 set subinterface Ethernet mtu=1300 store=persistent
Ok.

I then ran the Speed Test again, but got a similar result:
http://www.speedtest.net/my-result/6934091193

surfisup1000

5288 posts

Uber Geek

#1929204 4-Jan-2018 17:15

Are you sure your fritz is dead? Mine died, but turned out to be the AC adapter.

Could be worth scavenging an adapter with similar voltage and amp output and seeing if your fritz is revived.

Unless you know for sure the fritz is actually dead.

AC adapter issues are more common than people might realise.

qwerty123

147 posts

Master Geek

#1929262 4-Jan-2018 17:49

BuckoNZ:

Using the netsh command, I adjusted the MTU on my Ethernet connection to 1300:

C:\WINDOWS\system32>netsh interface ipv4 set subinterface Ethernet mtu=1300 store=persistent
Ok.

I then ran the Speed Test again, but got a similar result:
http://www.speedtest.net/my-result/6934091193

Right. Wonder if your router does TCP MSS clamping, but sets very small MSS and causes excessive fragmentation of TCP packets. You can try either capturing traffic with tcpdump/wireshark or run iperf3 test to some public iperf3 server via udp and see if UDP speeds are higher, like

iperf3 -u -b 10M -p 5201 -c ping.online.net
Connecting to host ping.online.net, port 5201
[ 6] local x.x.x.x port 54308 connected to 62.210.18.40 port 5201
[ ID] Interval Transfer Bandwidth Jitter Lost/Total Datagrams
[ 6] 0.00-10.00 sec 11.8 MBytes 9.91 Mbits/sec 8.423 ms 0/1513 (0%)
[ 6] Sent 1513 datagrams

fe31nz

1230 posts

Uber Geek

#1929549 5-Jan-2018 01:24

If you want to capture the actual traffic on the WAN port of the FritzBox, you can get it to do that via a page accessible from a link on its support page. The URL for the support page of a FritzBox is <address of FritzBox>/support.lua. Once you have the captured traffic you can use Wireshark to examine it and see if there is fragmentation or retries or anything else funny happening.

BuckoNZ

136 posts

Master Geek

#1929563 5-Jan-2018 07:21

surfisup1000:

Are you sure your fritz is dead? Mine died, but turned out to be the AC adapter.
Could be worth scavenging an adapter with similar voltage and amp output and seeing if your fritz is revived.
Unless you know for sure the fritz is actually dead.
AC adapter issues are more common than people might realise.

The original failed FritzBox is long gone - returned to 2Degrees for a replacement. However I thought it was the power supply - found another device in the house that used the same power supply but it failed to power up the FritzBox. This discussion is about my experience since the NEW router has been installed.

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