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Modem-router won't assign addresses; attached router will


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#1 varxx

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Posted 31 August 2016 - 05:11 AM

Just got fiber optic. Nice.

The Huawei HG8245h modem-router given me by the ISP has four LAN ports.

(1) I hooked my desktop up to LAN1 of Huawei modem-router. Worked fine. Good ethernet connection, pretty good wifi from Huawei modem-router.

(2) To see if I could get better wifi, I hooked up my Apple Airport Extreme wifi router to LAN2 of the Huawei modem-router. It can't connect. Error message: NO DNS SERVER.

(3) Next I disconnected my desktop and I hooked up Apple Airport Extreme to LAN1 of Huawei modem-router. No Internet.

(4) Through trial and error, I set router mode on the Apple Airport Extreme to Bridge Mode and got it working.

(5) Then I connected my desktop to LAN2 of the Huawei modem-router. No Internet. Error message: NO DNS SERVER.

(6) Finally, I connected my desktop to one of the LAN ports of Apple Airport Extreme. Connection!

So, now I have my Apple Airport Extreme managing my LAN entirely, both wifi and ethernet. Speed is very good with both.

I should be happy, but I'm not. I want to understand why I can't have both my desktop and my Airport Extreme connected to LAN ports on the Huawei modem router.

MY QUESTION: I want to know why I can't get my ISP modem-router to assign any additional DNS addresses. It can assign only one. Do I need to change settings in my Huawei modem-router setup?

Thanks!



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#2 Trikein

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Posted 31 August 2016 - 10:17 AM

Because it is not a router, it is a ONT. Seems like your ISP has it set to only bridge one public IP on LAN port 1. Who is the ISP? Have you tried contacting them?

 

Either way, you should only have 1 router. You can have more then once device do wireless, but it needs to set up as a AP, like you found.



#3 varxx

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Posted 31 August 2016 - 10:21 AM

Because it is not a router, it is a ONT. Seems like your ISP has it set to only bridge one public IP on LAN port 1. Who is the ISP? Have you tried contacting them?

 

Either way, you should only have 1 router. You can have more then once device do wireless, but it needs to set up as a AP, like you found.

 

Thank you very much, Trikein. I just wanted to be sure that I was configuring everything optimally. If it's an ONT and not a router, then I wonder why it has four LAN ports. Or perhaps you're saying that my ISP has limited the device in this way.

 

Assuming that it's true that my "ISP has it set to only bridge one public IP on LAN port 1", is this something that can normally be changed in the device's settings (which I can access, by the way, though I haven't made changes). 

 

Thank you very much. Sorry my original post was so long and prose-filled.



#4 Trikein

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Posted 31 August 2016 - 10:54 AM

"If it's an ONT and not a router, "

I should have said it is not configured as a router, not that it isn't physically a router. Technically it can do a little bit of everything, from VLAN switch, Wifi router, house phone, etc, but only if set up to do so. The main thing that is missing is NAT is not enabled in the config (data plan) which is sent from the ISP to the ONT when it is installed. This makes it so it can only bridge public IP's, and if your ISP only gives out 1 public IP, only 1 device can get online. See page 3-7 of manual for outline. Notice if you have NAT enabled, you need to use LAN 1 to connect the Huawei to the Airport Express and set Airport Express to AP. Other things should be enabled too, but the ISP representative you will have to talk to should know what is default.

 

PS. If you are going to use the Huawei and Airport express both for Wifi, make sure they are not physically close (10-15feet at least) and are on different channels. 


Edited by Trikein, 31 August 2016 - 10:55 AM.


#5 varxx

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Posted 31 August 2016 - 10:57 AM

Thank you, Trikein. That's very clear. I have a direct line to a tech person at the ISP, so I'll talk with him.

 

I suspect they used a default -- and very basic -- configuration.

 

I appreciate your help.






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