F5F Stay Refreshed Power Users Networks Set up your home network by adjusting settings and ensuring all devices are connected properly.

Set up your home network by adjusting settings and ensuring all devices are connected properly.

Set up your home network by adjusting settings and ensuring all devices are connected properly.

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TheLaurenzo
Member
59
07-30-2017, 05:31 AM
#1
Hi everyone, I have one modem and two routers at home with some LAN accessories like STBs and a CCTV server. Here’s how my network is set up now: ZTE F609, modem from my internet service provider, only one unlocked LAN port (rules from my ISP), I connect it to the ground floor router (Pro-Link prc3801), then link it via LAN to my two STBs (they’re barely on and we don’t watch cable TV much), a CCTV server, and my upstairs router (Asus RT-AC1200g+). For the past couple of weeks, both routers have been losing internet connection intermittently. Restarting them fixes it. I’ve tried a few things: checking for IP conflicts, but I’m not sure if that’s the issue. My friend suggested it might be an IP address conflict, but looking at my router settings (not fully confident), it seems like each router has a different IP range—my ISP range is 192.168.123.2 to 192.168.123.253 for one and 192.168.1.2 to 192.168.1.254 for the other. So maybe it’s not an IP problem? -ISP issue? I don’t think so, just restarting both seems to work now. If you need more details, I can explain further. Sorry for the unclear English, and sorry for the confusion!
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TheLaurenzo
07-30-2017, 05:31 AM #1

Hi everyone, I have one modem and two routers at home with some LAN accessories like STBs and a CCTV server. Here’s how my network is set up now: ZTE F609, modem from my internet service provider, only one unlocked LAN port (rules from my ISP), I connect it to the ground floor router (Pro-Link prc3801), then link it via LAN to my two STBs (they’re barely on and we don’t watch cable TV much), a CCTV server, and my upstairs router (Asus RT-AC1200g+). For the past couple of weeks, both routers have been losing internet connection intermittently. Restarting them fixes it. I’ve tried a few things: checking for IP conflicts, but I’m not sure if that’s the issue. My friend suggested it might be an IP address conflict, but looking at my router settings (not fully confident), it seems like each router has a different IP range—my ISP range is 192.168.123.2 to 192.168.123.253 for one and 192.168.1.2 to 192.168.1.254 for the other. So maybe it’s not an IP problem? -ISP issue? I don’t think so, just restarting both seems to work now. If you need more details, I can explain further. Sorry for the unclear English, and sorry for the confusion!

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Alysss
Member
221
07-30-2017, 05:57 AM
#2
You cannot operate both routers in their standard "router" settings. The backup device needs to be configured in AP mode to prevent IP conflicts when two DHCP servers are active on the same network.
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Alysss
07-30-2017, 05:57 AM #2

You cannot operate both routers in their standard "router" settings. The backup device needs to be configured in AP mode to prevent IP conflicts when two DHCP servers are active on the same network.

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StuffyBuffler
Member
63
07-30-2017, 02:29 PM
#3
Thanks for your message. It looks like the changes you made affected your internet connection. You might want to try resetting your modem again or checking your internet settings to see if that resolves the issue. If not, let me know further details.
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StuffyBuffler
07-30-2017, 02:29 PM #3

Thanks for your message. It looks like the changes you made affected your internet connection. You might want to try resetting your modem again or checking your internet settings to see if that resolves the issue. If not, let me know further details.

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xoxo_sambo56
Member
89
07-30-2017, 04:51 PM
#4
The reason for that is most likely that your modem and router weren't in the same network anymore. Look, it's best if you set the IP address of your modem to a static address. For example: 192.168.1.1 /24 (255.255.255.0) Then you set the IP of the router that is physically connected to that modem to a static IP. For example: 192.168.1.2 /24 (255.255.255.0) Configure your DHCP server on that router to 192.168.1.10 - 254 Put your second router into AP / bridged mode and also set a static IP. For example: 192.168.1.3 (Turn off DHCP if not automatically done) Now you're left with 6 additional IPs (192.168.1.4 - 9) for any devices that you want to set up with static IPs. Any other devices will automatically end up within the DHCP range. It is important that you get the subnet-masks and addresses right. Otherwise devices might not be able to communicate with each other anymore. So, this is how I'd set it up: Modem: 192.168.1.1 /24 Router 1: 192.168.1.2 /24 (Router mode) (DHCP 192.168.1.10 - 254) Router 2: 192.168.1.3 /24 (AP Mode) (DHCP off) STB 1: 192.168.1.4 /24 STB 2: 192.168.1.5 /24 CCTV Server: 192.168.1.6 /24 Not sure if you can even configure these STB thingies. I don't even know what they are lol If not, let them get their IP from the DHCP.
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xoxo_sambo56
07-30-2017, 04:51 PM #4

The reason for that is most likely that your modem and router weren't in the same network anymore. Look, it's best if you set the IP address of your modem to a static address. For example: 192.168.1.1 /24 (255.255.255.0) Then you set the IP of the router that is physically connected to that modem to a static IP. For example: 192.168.1.2 /24 (255.255.255.0) Configure your DHCP server on that router to 192.168.1.10 - 254 Put your second router into AP / bridged mode and also set a static IP. For example: 192.168.1.3 (Turn off DHCP if not automatically done) Now you're left with 6 additional IPs (192.168.1.4 - 9) for any devices that you want to set up with static IPs. Any other devices will automatically end up within the DHCP range. It is important that you get the subnet-masks and addresses right. Otherwise devices might not be able to communicate with each other anymore. So, this is how I'd set it up: Modem: 192.168.1.1 /24 Router 1: 192.168.1.2 /24 (Router mode) (DHCP 192.168.1.10 - 254) Router 2: 192.168.1.3 /24 (AP Mode) (DHCP off) STB 1: 192.168.1.4 /24 STB 2: 192.168.1.5 /24 CCTV Server: 192.168.1.6 /24 Not sure if you can even configure these STB thingies. I don't even know what they are lol If not, let them get their IP from the DHCP.

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KarmaNoob
Junior Member
49
07-30-2017, 08:56 PM
#5
You're facing an issue where your modem is stuck on an IPv6 address and restricted by your ISP. Proceed to the next step for troubleshooting.
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KarmaNoob
07-30-2017, 08:56 PM #5

You're facing an issue where your modem is stuck on an IPv6 address and restricted by your ISP. Proceed to the next step for troubleshooting.

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PotterFeet
Junior Member
34
08-02-2017, 02:23 PM
#6
It could use a public IPv6 address, but that's irrelevant. It should have a private IPv4 address. It may just receive whatever DHCP assigns it. Try to determine the standard IPv4 address of the modem and adjust your network IPs accordingly, or hope the DHCP server provides one.
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PotterFeet
08-02-2017, 02:23 PM #6

It could use a public IPv6 address, but that's irrelevant. It should have a private IPv4 address. It may just receive whatever DHCP assigns it. Try to determine the standard IPv4 address of the modem and adjust your network IPs accordingly, or hope the DHCP server provides one.