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249 posts

Master Geek

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# 240922 2-Oct-2018 17:41
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Hi there,

 

I've got a very strange issue - I've been helping a customer with their Wifi setup - the site has two 'offices' - a small home office that has a Spark/Huawei HG659b, connected to the fiber ONT, and another 'main office' attached to the garage. The site has a Spark fiber connection.

 

They have been running a single UAP-AC-Lite in the main office, cabled directly from the HG659b. They have had no issues since this device was set up. There is a large leased copier in the home office.

 

I have added a second UAP-AC-Lite in the home office, have re-adopted both to a Unifi Controller installed on my laptop, and configured them with the same settings that were previously running fine. As soon as the second UAP is added to the system, the scanner in the home office is unable to email scanned items to external addresses. The WiFi inside (anything connecting to the new UAP) is patchy too, mobile devices get a 'no interet' connection. If I disconnect the UAP (in the same room as the copier), everything starts working again.

 

I swapped the new UAP with the same model from my office, and their UAP runs great here. The same problem occurs in the home office with my UAP, which was stable in my office from day one.

 

I am pretty stumped by this one, I've run Unifi networks all over the place with zero issues, and with a lot more AP's than this! Hopefully one of the GZ gurus will have some suggestions...

 

On the controller settings I've turned off DHCP. It should be a very simple configuration, I'm running the same setup at home with 3 UAPs. Maybe I'm missing something simple!

 

Thanks in advance!


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2325 posts

Uber Geek

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  # 2100240 2-Oct-2018 17:51
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1. Does scanner connect to network via wifi??

 

2. Is the HG659 wifi off or on???



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Master Geek

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  # 2100242 2-Oct-2018 17:55
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Sorry, should have noted that. 

 

1. Scanner is connected via cable.

 

2. HG659b WiFi is OFF


 
 
 
 


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Uber Geek

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  # 2100247 2-Oct-2018 18:41
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Same Mac or IP address for the second uap and scanner?

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  # 2100253 2-Oct-2018 18:53
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Suspect you have hit the device limit of the HG659 by adding one more device to the network. Do things start going again if you restart the HG659?




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Master Geek

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  # 2100256 2-Oct-2018 18:58
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RunningMan:

Suspect you have hit the device limit of the HG659 by adding one more device to the network. Do things start going again if you restart the HG659?



I've checked that and set a static ip for both, will double check though. Thanks



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Master Geek

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  # 2100257 2-Oct-2018 19:00
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bener:
RunningMan:

Suspect you have hit the device limit of the HG659 by adding one more device to the network. Do things start going again if you restart the HG659?



I've checked that and set a static ip for both, will double check though. Thanks


I did not realise the HG659 had a device limit! I'll check that. I'd be surprised though, there's 4 workstations, around 4 smartphones, a TV, plus the scanner and APs

Thanks for the input.

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  # 2100259 2-Oct-2018 19:05
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I forget the precise details, but from memory, 32 devices on the LAN, and things start going missing? Not sure if assigning a static prevents the issue. The other possibility is an IP conflict - get the odd device with a dodgy DHCP stack that will reuse an IP address that has been assigned to something new by the router.


 
 
 
 




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Master Geek

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  # 2100273 2-Oct-2018 19:24
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RunningMan:

I forget the precise details, but from memory, 32 devices on the LAN, and things start going missing? Not sure if assigning a static prevents the issue. The other possibility is an IP conflict - get the odd device with a dodgy DHCP stack that will reuse an IP address that has been assigned to something new by the router.



Thanks, I'll definitely follow up on that advice. I definitely thought it could be an IP conflict at first, but unless something is dodgy like you say, that shouldn't be an issue.

I'll try resetting everything, I've already tried factory reset on HG659 of course, but a full reconfigure of all devices might do it.

Will keep updating. Next option I head in mind was replacing the router. It can't be UA because I've tested that with a different unit.

I was thinking of ordering a USG and a simple gigabit switch.

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Uber Geek

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  # 2100381 2-Oct-2018 22:54
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You mention that you've set up several other Ubiquity networks, so I am going to assume that you cabled the 2nd AP to the HG659?

 

This would give you a wired diagram similar to this? (gotta love ASCII art with variable width fonts (why does GZ not support fixed width font BB codes?))

 

 

 

ONT

 

 |

 

 |                   /--MFD

 

 HomeOffice --HG659-<

 

 |                   \-UAC-AP2

 

 |

 

 |

 

 Main Office --UAC-AP1

 

 

 

     

  1. Have you removed AP1 from the main office and tested if devices connect to AP2 & get a constant internet connection?
  2. Have you disabled wireless uplinks / mesh networking on both APs?
  3. None of the AP's are in isolation mode?
  4. You did an RF scan for both the 2.4 & 5GHz environments?
  5. You're not using default SSID names which clash with a neighbour, interfering with your signal?

 

Edit: Added pts 4 & 5
Edit2: Fixed ASCII art





Please keep this GZ community vibrant by contributing in a constructive & respectful manner.




249 posts

Master Geek

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  # 2100468 3-Oct-2018 09:18
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IcI:

 

You mention that you've set up several other Ubiquity networks, so I am going to assume that you cabled the 2nd AP to the HG659?

 

This would give you a wired diagram similar to this? (gotta love ASCII art with variable width fonts (why does GZ not support fixed width font BB codes?))

 

  ONT  |  |                   /--MFD  HomeOffice --HG659-<  |                   \-UAC-AP2  |  |  Main Office --UAC-AP1  

 

     

  1. Have you removed AP1 from the main office and tested if devices connect to AP2 & get a constant internet connection?
  2. Have you disabled wireless uplinks / mesh networking on both APs?
  3. None of the AP's are in isolation mode?
  4. You did an RF scan for both the 2.4 & 5GHz environments?
  5. You're not using default SSID names which clash with a neighbour, interfering with your signal?

 

Edit: Added pts 4 & 5
Edit2: Fixed ASCII art

 

 

 

 

 

 

Nice art! Yes, the setup is cable from ONT to WAN port on HG659, AP1 on LAN1, AP2 on LAN2, Copier on LAN3

 

I'll check wireless uplinks and isolation mode again but I did not have that enabled on setup. RF scan and SSID's are all testing OK with wifi scanner.

 

Thanks for the ideas, I've got a list of things to re-check now.


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Uber Geek

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  # 2106463 11-Oct-2018 19:23
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@bener: Thanks for the ideas, I've got a list of things to re-check now. 

 

Any luck in resolving your issue?





Please keep this GZ community vibrant by contributing in a constructive & respectful manner.




249 posts

Master Geek

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  # 2107988 15-Oct-2018 10:26
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IcI:

 

@bener: Thanks for the ideas, I've got a list of things to re-check now. 

 

Any luck in resolving your issue?

 

 

 

 

Thanks for the follow up - the customer has been away but I'll be testing again early this week... Will definitely post updates as I find out what is happening.




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Master Geek

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  # 2108408 15-Oct-2018 19:01
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Just a quick update, I've swapped the existing HG659 for another one that I had spare, and everything seems to be working.

 

There was only a maximum of 10-15 devices on the network on any given day, so the max devices limit was far from being reached, and there were definitely no IP addressing issues.

 

I'm leaving the replacement onsite for testing. Will report back.


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  # 2108435 15-Oct-2018 19:50
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Old firmware perhaps?




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Master Geek

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  # 2108642 16-Oct-2018 09:36
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RunningMan:

 

Old firmware perhaps?

 

 

 

 

Good point, I'll check the old unit and compare.


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