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Taubin

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#233784 3-May-2018 09:01
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This is somewhat of a recent issue (happens to coincide with my issues with sites timing out as well), and I'm not sure what I should be blaming here.

 

I have a Nexus 5X, a Nexus 5, and a Samsung Tablet, all of which show zero upload speed while connected to my network. Connecting to other peoples networks (or even public networks like McDonalds or similar) and I can upload just fine.

 

I'm on BigPipe VDSL, with a Vigor 130 that's bridged to an Edgerouter Lite (using Michael Murfy's setup here), Netgear ProSafe G5108E switch, to a Unifi AC Lite. Over the course of troubleshooting the issues I've been having, I've reset all of the network devices to default, and replaced all cables (just to rule those items out). BigPipe as part of troubleshooting my connection issues, has removed my IPV6 (made no difference). The Nexus 5X has been completely wiped and had the latest updates installed from the full image to help troubleshooting.

 

I've tried setting channels manually, as well as auto for the AP, and it has not made a difference at all. I'm at a bit of a loss as to what else I could try to get this working. This issue happens to coincide with my issues of having multiple websites reset their connection when attempting to browse them across multiple devices and operating systems. BigPipe recently stated it could be MSS clamping, however I've verified that's enabled on my router. They had me set my MTU to 1300, which killed my connection to any secured sites (non-secured sites connect just fine with that set). Any suggestions as to what else I could try, would be greatly appreciated, I'm tearing my hair out here.

 

46 second speedtest on my Nexus 5X: https://photos.app.goo.gl/URzLfnhNEUniscA28


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Oblivian
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  #2006897 3-May-2018 09:14
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So, gets DHCP (up and down traffic negotiation) 

 

But wont load pages (no send requests), or can load (send and rec req OK). But something specific doesn't let you send (send only block)?

 

If it gets an address, and doesn't load pages (you request pages.. they don't get sent magically) then DNS pointing to wrong place or gateway non existent. Both of which are handed out in DHCP first. Can happen in double NAT scenario

 

Time for a pen and paper and make sure routes, DNS and GW are all pointing to the correct endpoint device internet side and not looping back or being dropped.


Taubin

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  #2006915 3-May-2018 09:23
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I shouldn't have a double nat, I'm on a public IP with bigpipe and the modem is bridged. The correct IP shows up in my router pppoe connection. I'm able to traceroute the sites just fine (reddit, arstechnica, stuff.co.nz and others). They will sometimes load just fine and others I get "connection reset" in chrome and nothing in firefox. I've tried BigPipe, Quad9, Google and 1.1.1.1 for my DNS, and it doesn't have any effect on the issue. I can be browsing the sites, open a new tab for an article or comments, and it won't connect at all. If I connect a VPN, it connects just fine. Same with connecting a VPN on my phone, it will upload just fine. It's only while connected to my network. I've had various tickets open with BigPipe for the issue since November, and they can't seem to find the issue either.

 

The issues started showing up with no changes on my network, and have persisted through multiple resets of my network entirely. The sites issue is happening on wired and wireless connections. The upload issue is only on my android devices (which will be using Google's dns as it's hard wired). I've tried setting a static IP and setting a dns on the devices (agian, BP, Google, Quad9, 1.1.1.1) and it still happens so I can rule out a DNS issue.


 
 
 
 


chevrolux
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  #2007414 3-May-2018 18:45
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If you can traceroute but not actually load content, I would also think MTU related too. 1300 seems drastic, but maybe just drop down to 1460-ish just for testing.

 

try ping with different packet sizes... firstly "ping -f -l 1500 trademe.co.nz".. 1500 will almost certainly fail, but you will see how big a packet you can send without fragmentation. Then look at the MTU's set on your ethernet and PPPoE interfaces


Taubin

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  #2007417 3-May-2018 18:55
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Anything above 1464 fails, so that's what I should set my mtu at on my PPPoE correct?


Spyware
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  #2007423 3-May-2018 19:09
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MTU=1464+28=1492

Taubin

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  #2007451 3-May-2018 20:28
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That's what it's currently set to (1492) so it should be fine correct? Sorry for my ignorance on the subject.


freakngeek
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  #2007496 3-May-2018 21:08
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I set my MTU to:

 

pppoe =1492
LAN & VPN = 1500
These are pretty well default settings

 

I also enable MSS-Clamping as such on the ERL3:
set firewall options mss-clamp mss 1452


 
 
 
 


Taubin

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  #2007503 3-May-2018 21:19
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That's the same settings my ERL has been set at. 1492 on pppoe and 1500 on eth0 and eth1

 

I verified the mss-clamp as well

 

taubin@ubnt# show firewall options
mss-clamp {
mss 1412
}


freakngeek
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  #2007514 3-May-2018 21:34
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Any WAN-OUT firewall settings that could be holding you up ?


yitz
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  #2007527 3-May-2018 22:16
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Is the uploading issue only affecting speed tests or other usage (e.g. uploading a photos to Facebook) as well?

 

 

(other than browsing connection resets)

Jase2985
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  #2007562 4-May-2018 05:32
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have you tried just using the AP connected to the Vigor? remove some of the gear from the setup and see if you can see if its anything in your setup thats the issue.

 

if it was a wider spread bigpipe issue im sure we would have seen more cases of it on here.


Taubin

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  #2007578 4-May-2018 06:12
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The only firewall is the one set by default by the edgerouter

 

It's affecting multiple sites, not just speed tests, some work okay (photos.google) others don't

 

I've removed my switch from the equation during testing, but not the router.

 

It's occurring on more that just speedests as well, anything that uses fastly as a cdn (reddit, stuff, arstechnica) is being reset often.

 

I ran a pcap during upload and it's actually being reset, not  just timing out.

 

BigPipe asked for a pcap so I sent them one straight from the router, attempting multiple sites that timed out with a connection reset.

 

Click to see full size


Taubin

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  #2007873 4-May-2018 15:17
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Just an update, I spent a bit of time this afternoon tearing everything apart again. I connected the AP directly to the modem, and it allowed uploads (though very slow at around 1.2 mb/s). I wiped the modem entirely, as well as the router, made sure they were both up to date (there was a firmware update for the modem) and re-bridged the modem. Once I reconnected everything, I'm able to upload at a bit better speeds. I'm hopeful it's fixed, I'll keep an eye on everything and see what happens, hopefully it holds up this time around.

 


Thank you all for the help and explanations, I appreciate it.


Jase2985
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  #2007880 4-May-2018 15:21
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can you get to the sites you couldnt before?


Taubin

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  #2007884 4-May-2018 15:24
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They are loading the same as they were before, anything on the cdn, either resets, times out, or takes ages to load, the only change so far is being able to upload from my android devices. I'll keep an eye on it over the weekend when I'm on reddit more to see if that blanks out like it's been doing.


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