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Replaced router, pi-hole no longer works

TrainFan475
By TrainFan475
in Networking
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Update: I got it running, just had to run pihole -r to reconfigure the ip address

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I just upgraded my router from a cisco linksys e1200 to a TP-link AC1750, but it made my pi-hole stop working. I can't get the raspberry pi to connect to the router via ethernet at all, and even on wifi I can't connect to it through the web interface. I don't remember how I set it up in the first place so I would have to learn it all over again.

CPU: Ryzen 5 5600x  | GPU: GTX 1070 FE | RAM: TridentZ 16GB 3200MHz | Motherboard: Gigabyte B450 Aorus M | PSU: EVGA 650 B3 | STORAGE: Boot drive: Crucial MX500 1TB, Secondary drive: WD Blue 1TB hdd | CASE: Phanteks P350x | OS: Windows 10 | Monitor: Main: ASUS VP249QGR 144Hz, Secondary: Dell E2014h 1600x900

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Did your Pi have static IP or DHCP configured? Did your subnet change? Define "can't get pi to connect to the router via etherner". Does the link come up?

HAL9000: AMD Ryzen 9 3900x | Noctua NH-D15 chromax.black | 32 GB Corsair Vengeance LPX DDR4 3200 MHz | Asus X570 Prime Pro | ASUS TUF 3080 Ti | 1 TB Samsung 970 Evo Plus + 1 TB Crucial MX500 + 6 TB WD RED | Corsair HX1000 | be quiet Pure Base 500DX | LG 34UM95 34" 3440x1440

Hydrogen server: Intel i3-10100 | Cryorig M9i | 64 GB Crucial Ballistix 3200MHz DDR4 | Gigabyte B560M-DS3H | 33 TB of storage | Fractal Design Define R5 | unRAID 6.9.2

Carbon server: Fujitsu PRIMERGY RX100 S7p | Xeon E3-1230 v2 | 16 GB DDR3 ECC | 60 GB Corsair SSD & 250 GB Samsung 850 Pro | Intel i340-T4 | ESXi 6.5.1

Big Mac cluster: 2x Raspberry Pi 2 Model B | 1x Raspberry Pi 3 Model B | 2x Raspberry Pi 3 Model B+

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Have you tried running sudo raspi-config to see if you aren't able to redo your network settings?

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7 minutes ago, jj9987 said:

Did your Pi have static IP or DHCP configured? Did your subnet change?

It has a static ip. DHCP is enabled on router and disabled on pi-hole.

7 minutes ago, jj9987 said:

Define "can't get pi to connect to the router via etherner". Does the link come up?

I ran the ethernet cable from the pi to the router (same as before with old router) and the pi won't connect to the router.

Also what's a subnet?

CPU: Ryzen 5 5600x  | GPU: GTX 1070 FE | RAM: TridentZ 16GB 3200MHz | Motherboard: Gigabyte B450 Aorus M | PSU: EVGA 650 B3 | STORAGE: Boot drive: Crucial MX500 1TB, Secondary drive: WD Blue 1TB hdd | CASE: Phanteks P350x | OS: Windows 10 | Monitor: Main: ASUS VP249QGR 144Hz, Secondary: Dell E2014h 1600x900

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13 minutes ago, TrainFan2020 said:

It has a static ip. DHCP is enabled on router and disabled on pi-hole.

I ran the ethernet cable from the pi to the router (same as before with old router) and the pi won't connect to the router.

Also what's a subnet?

How do you know it won't connect to the router? What happens or what does not happen? Do the lights on the Pi ethernet port turn on/start blinking? What is your Pi static IP configured to? What is your router's IP?

 

Subnet (in very simplified and layman terms) is basically your home network. It defines what private IP range is used for your home network. For example 192.168.1.1/24 is the most widely used in home routers. In such case 192.168.1.1 is traditionally (but not always) the gateway/router and /24 indicates the subnet size (254 devices, from 192.168.1.1 to 192.168.1.254).

 

If the Pi IP and router IP do not belong to the same subnet, you run into issues.

HAL9000: AMD Ryzen 9 3900x | Noctua NH-D15 chromax.black | 32 GB Corsair Vengeance LPX DDR4 3200 MHz | Asus X570 Prime Pro | ASUS TUF 3080 Ti | 1 TB Samsung 970 Evo Plus + 1 TB Crucial MX500 + 6 TB WD RED | Corsair HX1000 | be quiet Pure Base 500DX | LG 34UM95 34" 3440x1440

Hydrogen server: Intel i3-10100 | Cryorig M9i | 64 GB Crucial Ballistix 3200MHz DDR4 | Gigabyte B560M-DS3H | 33 TB of storage | Fractal Design Define R5 | unRAID 6.9.2

Carbon server: Fujitsu PRIMERGY RX100 S7p | Xeon E3-1230 v2 | 16 GB DDR3 ECC | 60 GB Corsair SSD & 250 GB Samsung 850 Pro | Intel i340-T4 | ESXi 6.5.1

Big Mac cluster: 2x Raspberry Pi 2 Model B | 1x Raspberry Pi 3 Model B | 2x Raspberry Pi 3 Model B+

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11 minutes ago, jj9987 said:

How do you know it won't connect to the router? What happens or what does not happen? Do the lights on the Pi ethernet port turn on/start blinking? What is your Pi static IP configured to? What is your router's IP?

 

Subnet (in very simplified and layman terms) is basically your home network. It defines what private IP range is used for your home network. For example 192.168.1.1/24 is the most widely used in home routers. In such case 192.168.1.1 is traditionally (but not always) the gateway/router and /24 indicates the subnet size (254 devices, from 192.168.1.1 to 192.168.1.254).

 

If the Pi IP and router IP do not belong to the same subnet, you run into issues.

I think it changed from 192.168.1.1 to 192.168.0.1

I'm going to try re configuring the pi-hole's ip address to match the subnet then

CPU: Ryzen 5 5600x  | GPU: GTX 1070 FE | RAM: TridentZ 16GB 3200MHz | Motherboard: Gigabyte B450 Aorus M | PSU: EVGA 650 B3 | STORAGE: Boot drive: Crucial MX500 1TB, Secondary drive: WD Blue 1TB hdd | CASE: Phanteks P350x | OS: Windows 10 | Monitor: Main: ASUS VP249QGR 144Hz, Secondary: Dell E2014h 1600x900

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Update: I got it running, just had to run pihole -r to reconfigure the ip address

CPU: Ryzen 5 5600x  | GPU: GTX 1070 FE | RAM: TridentZ 16GB 3200MHz | Motherboard: Gigabyte B450 Aorus M | PSU: EVGA 650 B3 | STORAGE: Boot drive: Crucial MX500 1TB, Secondary drive: WD Blue 1TB hdd | CASE: Phanteks P350x | OS: Windows 10 | Monitor: Main: ASUS VP249QGR 144Hz, Secondary: Dell E2014h 1600x900

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