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Help! One PC on network has no internet.

Linkingdots
By Linkingdots
in Networking
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Hi everyone! I just installed an additional switch to my network and now my PC is connected but has no internet, I've done the dns dump and IP config through CMD which cleared up the problem once but when I reset the PC no internet again even with doing the same steps.

 

Current set up:

 

Router -> 1st switch -> 2nd switch -> PC

 

The 1st Switch has a Google Wifi, Steam Link and 2 connections to other rooms in the house.

 

Before the 2nd Switch was installed 1 of the room connections was straight into a PC, however due to an additional PC in the room a switch was introduced. The new PC has no problems connecting to the internet, however the original PC started developing problems. I've tried switching the cables around, updating the network driver, CMD DNS reset and IP config reset to no different result. Followed all the google search results and here I am now begging for help.

 

Thanks in advance guys!

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Does your router have more than 1 port? Can you see what happens if you bypass the 1st switch and :

 

Router port 1 -> switch 1

Router port 2 -> switch 2?

 

What switches are you using?

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1 minute ago, NinJake said:

Does your router have more than 1 port? Can you see what happens if you bypass the 1st switch and :

 

Router port 1 -> switch 1

Router port 2 -> switch 2?

 

What switches are you using?

The router has more than 1 port however my ISP has blocked the other ports. Switch 1 is a D-Link DGS-1008D, Switch 2 is a Mercury switch (chinese make, works well and my 2nd pc is getting internet without issues). The PC with the problem is running windows 7. But before this it was working fine.

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Open up command prompt or powershell and type in "ipconfig /all" on both computers. List the info here. (mainly the ethernet adapter info... no need for the windows ip config)

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Windows IP Configuration

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

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
   Physical Address. . . . . . . . . : 2C-4D-54-D4-D7-AB
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::118d:aab:1b65:9f71%41(Preferred)
   IPv4 Address. . . . . . . . . . . : 101.127.245.98(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Wednesday, 4 December, 2019 12:24:51 AM
   Lease Expires . . . . . . . . . . : Tuesday, 10 December, 2019 12:24:51 AM
   Default Gateway . . . . . . . . . : fe80::205:73ff:fea0:6b3%41
                                       fe80::205:73ff:fea0:6b4%41
                                       fe80::205:73ff:fea0:6b5%41
                                       fe80::205:73ff:fea0:6b6%41
                                       101.127.245.1
   DHCP Server . . . . . . . . . . . : 172.17.0.201
   DHCPv6 IAID . . . . . . . . . . . : 690769236
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-21-7F-76-1A-2C-4D-54-D4-D7-

   DNS Servers . . . . . . . . . . . : 172.17.5.36
                                       172.17.5.68
   NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection 3:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Windscribe VPN
   Physical Address. . . . . . . . . : 00-FF-DD-83-D4-25
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Bluetooth Network Connection 4:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network
#4
   Physical Address. . . . . . . . . : 00-1A-7D-DA-71-13
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection 2:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : TAP-Windows Adapter V9
   Physical Address. . . . . . . . . : 00-FF-A6-00-36-E7
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{DD83D425-882C-49B3-8E7C-D31974D87E64}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{DDD9688D-951C-407B-A6DF-0B054BDF941E}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{FEB7B936-86EC-40D5-B3F2-489F8D863B99}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{A60036E7-3531-47E7-93FF-321598061764}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #4
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter 6TO4 Adapter:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft 6to4 Adapter #2
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2002:657f:f562::657f:f562(Preferred)
   Default Gateway . . . . . . . . . :
   DNS Servers . . . . . . . . . . . : 172.17.5.36
                                       172.17.5.68
   NetBIOS over Tcpip. . . . . . . . : Disabled

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So that's the info from the working computer? Or the non-working computer?

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1 minute ago, NinJake said:

So that's the info from the working computer? Or the non-working computer?

The non-working one

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Spoiler

 

18 minutes ago, Linkingdots said:

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
   Physical Address. . . . . . . . . : 2C-4D-54-D4-D7-AB
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::118d:aab:1b65:9f71%41(Preferred)
   IPv4 Address. . . . . . . . . . . : 101.127.245.98(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Wednesday, 4 December, 2019 12:24:51 AM
   Lease Expires . . . . . . . . . . : Tuesday, 10 December, 2019 12:24:51 AM
   Default Gateway . . . . . . . . . : fe80::205:73ff:fea0:6b3%41
                                       fe80::205:73ff:fea0:6b4%41
                                       fe80::205:73ff:fea0:6b5%41
                                       fe80::205:73ff:fea0:6b6%41
                                       101.127.245.1
   DHCP Server . . . . . . . . . . . : 172.17.0.201
   DHCPv6 IAID . . . . . . . . . . . : 690769236
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-21-7F-76-1A-2C-4D-54-D4-D7-

   DNS Servers . . . . . . . . . . . : 172.17.5.36
                                       172.17.5.68
   NetBIOS over Tcpip. . . . . . . . : Enabled

Can you get this info on the non-working computer please? Post it here and tag me @NinJake so I know you've responded. Thanks.

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@NinJake

 

non-working ipconfig

Windows IP Configuration

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

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
   Physical Address. . . . . . . . . : 2C-4D-54-D4-D7-AB
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::118d:aab:1b65:9f71%41(Preferred)
   IPv4 Address. . . . . . . . . . . : 101.127.245.98(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Wednesday, 4 December, 2019 12:24:51 AM
   Lease Expires . . . . . . . . . . : Tuesday, 10 December, 2019 12:24:51 AM
   Default Gateway . . . . . . . . . : fe80::205:73ff:fea0:6b3%41
                                       fe80::205:73ff:fea0:6b4%41
                                       fe80::205:73ff:fea0:6b5%41
                                       fe80::205:73ff:fea0:6b6%41
                                       101.127.245.1
   DHCP Server . . . . . . . . . . . : 172.17.0.201
   DHCPv6 IAID . . . . . . . . . . . : 690769236
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-21-7F-76-1A-2C-4D-54-D4-D7-

   DNS Servers . . . . . . . . . . . : 172.17.5.36
                                       172.17.5.68
   NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection 3:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Windscribe VPN
   Physical Address. . . . . . . . . : 00-FF-DD-83-D4-25
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Bluetooth Network Connection 4:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network
#4
   Physical Address. . . . . . . . . : 00-1A-7D-DA-71-13
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection 2:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : TAP-Windows Adapter V9
   Physical Address. . . . . . . . . : 00-FF-A6-00-36-E7
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{DD83D425-882C-49B3-8E7C-D31974D87E64}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{DDD9688D-951C-407B-A6DF-0B054BDF941E}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{FEB7B936-86EC-40D5-B3F2-489F8D863B99}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{A60036E7-3531-47E7-93FF-321598061764}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #4
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter 6TO4 Adapter:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft 6to4 Adapter #2
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2002:657f:f562::657f:f562(Preferred)
   Default Gateway . . . . . . . . . :
   DNS Servers . . . . . . . . . . . : 172.17.5.36
                                       172.17.5.68
   NetBIOS over Tcpip. . . . . . . . : Disabled

 

 

Working PC

Windows IP Configuration

   Host Name . . . . . . . . . . . . : DESKTOP-TNTU0I8
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Intel(R) Ethernet Connection (7) I219-V
   Physical Address. . . . . . . . . : 70-85-C2-8F-5F-06
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::6dd3:17b1:247c:b7f%14(Preferred)
   IPv4 Address. . . . . . . . . . . : 116.87.139.167(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.192.0
   Lease Obtained. . . . . . . . . . : Tuesday, 3 December 2019 7:16:56 pm
   Lease Expires . . . . . . . . . . : Monday, 9 December 2019 9:13:09 pm
   Default Gateway . . . . . . . . . : fe80::205:73ff:fea0:6b3%14
                                       fe80::205:73ff:fea0:6b4%14
                                       fe80::205:73ff:fea0:6b5%14
                                       fe80::205:73ff:fea0:6b6%14
                                       116.87.128.1
   DHCP Server . . . . . . . . . . . : 172.17.0.201
   DHCPv6 IAID . . . . . . . . . . . : 108037570
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-25-66-85-AB-70-85-C2-8F-5F-06
   DNS Servers . . . . . . . . . . . : 172.17.5.36
                                       172.17.5.68
   NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Ethernet 2:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Windscribe VPN
   Physical Address. . . . . . . . . : 00-FF-62-78-BA-28
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

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Edit: NVM didnt see you posted both in your last response. Reading now.

 

I'm not too sure if you somehow manually entered the ipv6 default gateway. But the last 2 digits for each computer... 1 is "14" and the other is "41" so I'm not sure if that was a mistake. The other thing is if you look at the subnet mask, it's different between the 2 computers. The DHCP server is the same... they both have unique IP addresses and look to both be connected to Windscribes VPN.

 

One thing I would try if possible is disconnecting from the Windscribe VPN and see if it works first. SInce that's another variable in this network. @Linkingdots

 

Otherwise, @Lurick is an actual network nerd so maybe he can see the issue straight away.

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Thanks @NinJake. I didn't manually key in anything but I'll try disabling ipv6 i guess. It's 1am where I'm at, so I'll probably call it a night. Hopefully @Lurick picks this up and is able to help. 

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image.thumb.png.628d03e938258c1f7bc1d4c0847f70e3.png

 

I'm assuming the issue is somehow related to the switch to switch config???

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Your second switch (Mercury Switch) might be a managed switch that has some settings to do something.

Did you bought it used? try checking if there is anything on the switch and on the packaging that says if it is managed and please share the model number/name

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