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jmosen

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#274409 20-Aug-2020 20:04
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Hi mates. Can any network rocket scientist suggest a reason for the following?

 

 

 

I switched back to Bigpipe in June and at the time ordered a static IP. Thanks to the advise of Geekzoners, we now have Unifi gear which just keeps going and going.

 

 

 

On Sunday we had a brief power outage so the Unifi gear's long streak came to an end through no fault of its own.

 

 

 

When everything came back up, I was unable to connect to some server software I run, more on that in a bit, and eventually tracked it down to an IP change. It turns out that while I had ordered and paid for a static IP, it wasn't actioned with my order. No big deal at all, even on a Sunday Bigpipe put it right for me quickly.

 

 

 

I run an Internet radio station that uses voice tracking technology. Broadcasters record their voice tracks by logging in with a specialised client to a server hosted on port 2323. I've been doing this for years and it has been running flawlessly on Bigpipe since I connected in June. It has also run flawlessly on Bigpipe when I have been with them previously on a static IP.

 

 

 

However, after the change from the dynamic IP pool, which was in the 122.54.xxx.xx range to the static IP range at 210.54.xx.xx, my broadcasters experienced extremely long delays connecting. Once the connection was established, throughput was just fine. I could repro the problem if I connected using the external IP, and was able to verify that the problem did not exist when I connected via the LAN IP.

 

 

 

Everything is hardwired and as I say, it worked fine before the IP change.

 

 

 

I did all the troubleshooting steps one should, which mostly involved turning things off and on again.

 

 

 

Having done everything I could think of, I got back in touch with Bigpipe and asked if they would put me back in the dynamic IP pool just to see if it helped. And...that has completely cleared it up.

 

 

 

Does anyone have any idea at all why that would be? Is there a setting buried away in the feature-rich Unifi UI that could be responsible?

 

 

 

I don't know if it's worth trying another static IP. If Bigpipe are still using CG NAT, it has improved a lot because I can connect to VPNs with their dynamic IP. So I guess if I have to stick with a dynamic IP I can use one of those dynamic DNS clients. I presume I can plug one into the UDM somewhere.

 

 

 

But I'm perplexed and would welcome any thoughts.

 

 

 

Cheers.

 

 

 

 





Jonathan


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nztim
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  #2546554 20-Aug-2020 20:07
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Paging @cbrpilot





Any views expressed on these forums are my own and don't necessarily reflect those of my employer. 


 
 
 

You will find anything you want at MightyApe (affiliate link).
cbrpilot
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  #2546665 21-Aug-2020 00:44
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Hi Jonathan, Bigpipe no longer users CGNAT, so that will not be the issue.

 

Static IP addresses do not work hugely different from a routing perspective to dynamic IPs, so there should be no difference in performance between Static and Dynamic IP for client to client communications. 

 

Where abouts the the incoming connections coming from?  NZ?  Overseas?  Which ISPs?





My views are my own, and may not necessarily represent those of my employer.


yitz
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  #2546681 21-Aug-2020 01:50
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Is there a possibility of DNS entries being cached somewhere or do you connect directly via IP address?




jmosen

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  #2547828 22-Aug-2020 21:17
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cbrpilot:

 

Hi Jonathan, Bigpipe no longer users CGNAT, so that will not be the issue.

 

Static IP addresses do not work hugely different from a routing perspective to dynamic IPs, so there should be no difference in performance between Static and Dynamic IP for client to client communications. 

 

Where abouts the the incoming connections coming from?  NZ?  Overseas?  Which ISPs?

 

 

 

 

The connections come from NZ, Australia, the UK, US, Ireland and Canada. Even when I connect via the external IP myself on my own Bigpipe account, the problem occurs. It also occurs if I connect via my Spark mobile connection.

 

 

 

Bigpipe have been great about helping me with this. After the problem resolved itself with a change back to a dynamic IP, they assigned me a new static IP to see if that helped. Sadly the problem returned the moment the switch was made, and went away again once I was back in the dynamic IP pool.

 

 

 

So I'm going to have to leave it that way and have set up a NoIP account.

 

 

 

Since there's no more CG NAT, it's not the end of the world but it's a bizarre one.

 

 

 

I'm not ruling out something with the Unifi UDM but have no idea what it could possibly be, since all the dynamic IPs I've been assigned have been different and work fine every time.

 

 

 

 





Jonathan


deadlyllama
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  #2547830 22-Aug-2020 21:19
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Does your static IP have reverse DNS? That resolves to something that resolves back to your IP?

jmosen

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  #2547831 22-Aug-2020 21:21
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yitz:

 

Is there a possibility of DNS entries being cached somewhere or do you connect directly via IP address?

 

 

 

 

Good thought, until this issue required me to get a NoIp account, the connections have been using the IP address. That's why a static one was ideal.





Jonathan


jmosen

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  #2547833 22-Aug-2020 21:24
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deadlyllama: Does your static IP have reverse DNS? That resolves to something that resolves back to your IP?

 

 

 

No it doesn't. I believe that if it did, it would break every time the addressed changes in Bigpipe's dynamic IP range. But it only breaks when I get moved from any dynamic IP to a static one which is in a different range.





Jonathan




aphocus
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  #2547836 22-Aug-2020 21:42
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IMHO you shouldn't be hosting on a home connection, you can get cheap VPS's these days with static IPs, free DNS hosting, and not have to deal with power outages etc.

 

Though the connection issue does seem like a pain especially if clients want to casually host a video game server or something that doesn't need such perfect uptime as internet radio.


jmosen

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  #2547838 22-Aug-2020 21:52
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I have been operating successful Internet radio stations for 22 years. Nowhere in this thread did I say the Internet radio streams themselves were hosted on this connection. The streams to which listeners connect are hosted in the US on servers with 99% up-time that can handle a heavy load.

 

 

 

I specifically said in the original post that the voice track server was on this connection. That doesn't require better up-time than what we have.





Jonathan


Peppery
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  #2548107 23-Aug-2020 12:40
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Have you done a packet capture (Wireshark etc) to see exactly where in the chain the problem lies?

 

aphocus:

 

IMHO you shouldn't be hosting on a home connection, you can get cheap VPS's these days with static IPs, free DNS hosting, and not have to deal with power outages etc.

 

 

I would hate to see how many zeros my bill would have if I were to move everything I host at home to an external provider


jmosen

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  #2548243 23-Aug-2020 16:20
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Thanks for the suggestion, I've not done this yet and it's a process I'm not familiar with so will learn about it.

 

 

 

In the meantime it is running OK from the dynamic IP pool so now it's more of a curiosity than anything else.





Jonathan


deadlyllama
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  #2548350 23-Aug-2020 18:06
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jmosen:

deadlyllama: Does your static IP have reverse DNS? That resolves to something that resolves back to your IP?


 


No it doesn't. I believe that if it did, it would break every time the addressed changes in Bigpipe's dynamic IP range. But it only breaks when I get moved from any dynamic IP to a static one which is in a different range.



I don't know how bigpipe do it but it's reasonably common to give reverse DNS of e.g. 1-2-3-4.isp.net which resolves back to 1.2.3.4 (if that was your IP).

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