Question DIR-X5460 Router can't connect to the internet ?

Dec 1, 2023
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Ok, so I ran into a new problem with my year-old router.
I lost power about a week ago for maybe 10 minutes. When everything was powered back up, nothing was connected to the internet, neither wifi nor ethernet.
Here's what I have.
Static IP AT&T Business Fiber 500 Mbps Up and Down Service (Have solid connection from ISP to Modem According to AT^T)
D-Link wifi 6 Router AX5460
D-Link DES-1024D 24-Port 10/100 Unmanaged Switch
Windows 10 PC ~~~> Wifi connection to Cell Phone
/
ISP === (fiber) ===> Modem ---->[WAN Port] Router [LAN Port 1] ----> [LAN Port 1] Network Switch ~~~~> [LAN Port 2] ~~~~> PC
& tried
ISP === (fiber) ===> Modem ---->[WAN Port] Router [LAN Port 1] ----> PC



With borrowed router

~~~> wifi connection to Cell Phone
/
ISP === (fiber) ===> Modem ---->[WAN Port] Router [LAN Port 1] ----> [LAN Port 1] Network Switch ~~~~> [LAN Port 2] ~~~~> PC
& tried
ISP === (fiber) ===> Modem ---->[WAN Port] Router [LAN Port 1] ----> PC


I have done the basic steps: power cycled everything, factory reset router, reset network settings on PC, flushed DNS, IPCONFIG /Renew, Tried a different known good router, and Even Changed out Ethernet cables just to be sure.

The kicker is with everything hooked up as usual; If I try to connect to the router via web browser, i.e., 192.168.0.1 from the PC, it won't connect. However, I can connect to it via my phone over wifi.

The internet works fine when I run direct ethernet from the modem to the PC. I only have a problem when I try adding the router, switch, or both.

I am pulling what little hair I have left out trying to rectify this. I REALLY need the internet back. My 3 and 8 years are stuck with no TV without wifi; thank you in advance.
 
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Regarding:

"Tried a different known good router" - make and model?

AX5400 or AX5460 - typo?

What is the current network configuration?

For example (line diagram):

ISP === (coax, DSL, fiber) ===> Modem ---->[WAN Port] Router [LAN Port] ----> [LAN Port] Office Wifi Access Point ~~~~> Wireless network devices

With other Router LAN ports -----> Wired network devices.


Feel free to edit and correct my line diagram as necessary. Where, for example, is the switch located?

Do label devices and ports.

FYI:

https://support.dlink.com/mobile/ma...P address of,network after the router reboots.

Hopefully just a error of omission or commission with respect to connectivity and/or configuration,
 
Regarding:

"Tried a different known good router" - make and model?

AX5400 or AX5460 - typo?

What is the current network configuration?

For example (line diagram):

ISP === (coax, DSL, fiber) ===> Modem ---->[WAN Port] Router [LAN Port] ----> [LAN Port] Office Wifi Access Point ~~~~> Wireless network devices

With other Router LAN ports -----> Wired network devices.


Feel free to edit and correct my line diagram as necessary. Where, for example, is the switch located?

Do label devices and ports.

FYI:

https://support.dlink.com/mobile/main/mfaq.aspx?f=et2ZO27+Pfo2uxLGQz9mWQ==#:~:text=The default IP address of,network after the router reboots.

Hopefully just a error of omission or commission with respect to connectivity and/or configuration,


For the second router, I attempted to use Linksys E2500 that was borrowed from my neighbor, disconnected it from his ISP, and connected it to mine, but there was no change in connectivity on my end (i.e., again connected to the network but could not connect to the internet) Removed it from my modem and returned it to him hooked it back up and he was connected to the internet as usual)

That was a typo. It's the AXS5460.

edited above, adding the diagram as requested

Both routers were hooked up the same way, ISP modem to router to switch to PC



Below is the ipconfig /all report


C:\WINDOWS\system32>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : DESKTOP-PO8EOGQ
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Ethernet 2:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe 2.5GbE Family Controller
Physical Address. . . . . . . . . : D8-BB-C1-0F-BA-05
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:1890:c0a:425a:5604:b467:bb19:3fcd(Preferred)
Temporary IPv6 Address. . . . . . : 2001:1890:c0a:425a:a05f:f168:d659:f6b6(Preferred)
Link-local IPv6 Address . . . . . : fe80::8e54:a3a0:bf18:ec80%2(Preferred)
IPv4 Address. . . . . . . . . . . : XX.XXX.XX.54(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.252
Default Gateway . . . . . . . . . : fe80::de8c:37ff:fe56:5ace%2
XX.XXX.XX.53
DHCPv6 IAID . . . . . . . . . . . : 47758273
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-2C-71-A0-21-D8-BB-C1-0F-BA-05
DNS Servers . . . . . . . . . . . : 12.127.16.67
12.127.16.68
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Ethernet 5:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VirtualBox Host-Only Ethernet Adapter
Physical Address. . . . . . . . . : 0A-00-27-00-00-08
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::5ace:df51:300d:f8a8%8(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.x.xx(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 487194663
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-2C-71-A0-21-D8-BB-C1-0F-BA-05
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Bluetooth Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
Physical Address. . . . . . . . . : 84-1B-77-DD-A6-DE
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

C:\WINDOWS\system32>
 
Although I don't know the details of your router there should be some kind of WAN panel. It should show if you are getting a IP.

I don't know if it applies to a fiber connection but cable modem you must most times reboot them if you change the device you plug into them. Maybe the fiber box has the mac address of you pc and if you reboot it should get the router mac.

For 2 different routers to not work is strange.

I don't know about att business but their home installs almost always have a router rather than some kind of modem/ont. If the att box has wifi it is a router and you can plug your switch directly into it.
 
Not sure about the wireless connection path in the line diagram:

[LAN Port 1] Network Switch ~~~~> [LAN Port 2] ~~~~> PC

The wireless connection would be Router ~~~~~> PC. The switch not having any wireless capability.

No lease time in "ipconfig /all"?

= = = =

Per Post #3

Subnet Mask = : 255.255.255.252

I would expect 255.255.255.0

It also appears that IPv4 is disabled.

If anything IPv6 should be disabled.

Use Google for DNS servers (8.8.8.8 and 8.8.4.4)

= = = =

Note: you do not need to redact Private IP addresses.

Reference:

https://www.lifewire.com/what-is-an-ip-address-2625920#:~:text=These types of IP addresses,are assigned by an ISP.
 
Per Post #3

Subnet Mask = : 255.255.255.252

I would expect 255.255.255.0

It also appears that IPv4 is disabled.
Wow I didn't see that. That is a point to point IP address. In addition it appears this is manually configured in your pc on the nic which is why you do not see DHCP. That would also clearly explain why you can't get into the router via ethernet since it is on the wrong subnet.
Go into the ethernet setting and set it to automatically obtain a IP. This should let the router assign your pc a IP via dhcp.
 
Wow I didn't see that. That is a point to point IP address. In addition it appears this is manually configured in your pc on the nic which is why you do not see DHCP. That would also clearly explain why you can't get into the router via ethernet since it is on the wrong subnet.
Go into the ethernet setting and set it to automatically obtain a IP. This should let the router assign your pc a IP via dhcp.
Ok so just to clarify, when you said go into ethernet settings you mean like image 1 location?

because when I set it to auto like shown in Image 2 with the router between the PC and modem
This is the result Image 3

However when I have the modem direct connected to the PC, bypassing the router Image 4
This is the result Image 5 and can access internet.
 
What you should do is set static IP given by AT&T on the WAN port of your router, not your PC.

As suggested you should use DHCP for your PC.
Microsoft loves to change stuff. I see they added that other screen to change nic settings. I have always done it the old way.

Just click the box obtain a ip address automatically in the first image window.

Your router should then give you a IP.
Well I reset everything to factory then set my Router to the ATT settings img 1 and set the PC to the suggested specs. as shown in Img 2
on Pc the status shows Img 3
when windows troubleshooter ran it showed img 4
On Router it shows img 5

wired connections are as follows;

{modem} ~~~> {Router WAN port 1} {Router LAN Port 1}~~~> {Switch Port 1} {Switch Port 2} ~~~>{PC }

LED Lights showing
Modem; both led's solid green
Router; Power =white, internet; not lit, 2.4 white, 5: white,
switch power led; green
port 1: green
port 2 green


did I miss anything?
 
Did you accidently uncheck IPv4 protocol for your PC's NIC? Go to Control Panel, Network and Sharing Center and check your Realtek 2.5Gbe NIC setting.

And why do you use a 10/100 Mbps switch when your PC has a 2.5Gbps NIC? Remove the 10/100Mbps switch if you can.

And why WAN IP is not showing up/setup? What's AT&T fiber modem/gateway model?

pcW3VJQ.png
 
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This seems very strange. If we look at the very last img and ignore all the other issues for now the question would be why does the dlink router not connect to the internet. This should function even if you turned off your pc completely.

At first I though you had the IP backwards but it appears you have the .54 address assigned at the wan port on the router and the .53 as the gateway and you have the mask correct.

This exact configuration works on your pc.

What I wonder though does the ISP have the wrong mac addressed tied to the .54 IP address in their equipment. It all depends on how long this takes to time out. You might try to power cycle whatever device is in front of the router if that even applies. Otherwise I would call the ISP and see what they say.

After than it is hard to say. If IPV4 is active on your machine. IPCONFIG /all will show you ipv4 stuff on the ethernet then it appears there is a dhcp issue. Why will the router not give you a IP. Does it give out ip to other devices. You somehow have access to the router, maybe by IPv6?

Could the router be bad and that is causing both the issue to the ISP and to your pc.

In any case get problem 1 fixed first.
 
Rerun "ipconfig /all" to show the current configuration settings.

Lease times?

Should appear directly below the subnet mask listing. Missing from the preceding posting.

Do not redact "ipconfig /all" other than an entry that can personally identify you. And in that case minimize the redaction.