Unmanaged Switch MG105 - ping ok, internet ko

Zotme
Zotme Posts: 8
First Comment
in Switch

Hi

my switch mg-105 suddenly won't let me browse the internet. I can ping the router or other devices, but internet is down. If i connect the pc directly to router, internet works.

Suggestion?

Thanks

«1

All Replies

  • monkeynia
    monkeynia Posts: 32  Freshman Member
    First Comment Friend Collector Third Anniversary

    Hi @Zotme,

    Could you help to verify the below question when the client connects to the MG105?

    1. Could you help to collect ipconfig /all (Window) information for me to check if the client gets the IP address/default gateway/DNS server settings?
    2. Can the client resolve the domain? Please use nslookup to check.
    3. What's your OS version / Nic model / Nic driver version?
  • Zotme
    Zotme Posts: 8
    First Comment

    Hi

    I've two switch MG-105, in the same configuration router-pc-cables, one works the other no…

    Windows 11 22H2

    Intel(R) Ethernet Controller I225-V
    Intel - 05/03/2022 - 1.1.3.28

    Same ipconfig /all with both switchs.

  • Zyxel_Melen
    Zyxel_Melen Posts: 3,176  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate
    edited June 2023

    Hi @Zotme,

    Thanks for providing your device information. But since you mention one MG-105 works and another does not, the problem is more likely on the MG-105. Could you provide the serial number of the two MG-105 for me to check the difference?

    Zyxel Melen


  • Zotme
    Zotme Posts: 8
    First Comment

    ko S224331001240

    ok S224329000256

    Thanks!

  • Zyxel_Melen
    Zyxel_Melen Posts: 3,176  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate

    Hi @Zotme,

    Thanks for the information. By the way, could you also help nslookup d.nebula.zyxel.com and tracert 8.8.8.8 between the two switches? I would like to confirm your internet has no problem.

    Zyxel Melen


  • Zotme
    Zotme Posts: 8
    First Comment

    Sure!

    MG-105 OK
    C:\Windows\System32>nslookup d.nebula.zyxel.com
    Server: TUF-AX6000-6F82
    Address: 192.168.50.1

    Risposta da un server non autorevole:
    Nome: d.nebula.zyxel.com
    Addresses: 34.246.20.161
    52.48.115.44
    52.210.12.1
    52.210.229.217
    54.73.103.137
    54.76.217.223
    54.154.22.135
    63.32.141.172
    34.243.116.158
    34.245.88.134

    C:\Windows\System32>

    C:\Windows\System32>tracert 8.8.8.8

    Traccia instradamento verso dns.google [8.8.8.8]
    su un massimo di 30 punti di passaggio:

    1 <1 ms <1 ms <1 ms TUF-AX6000-6F82 [192.168.50.1]
    2 9 ms 9 ms 9 ms 100.64.255.255
    3 9 ms 9 ms 9 ms net225-27-32-195.dimensionesrl.eu [195.32.27.225]
    4 9 ms 9 ms 9 ms net246-27-32-195.dimensionesrl.eu [195.32.27.246]
    5 8 ms 9 ms 9 ms 72.14.221.8
    6 9 ms 9 ms 9 ms 108.170.245.65
    7 9 ms 9 ms 9 ms 142.251.235.173
    8 9 ms 9 ms 9 ms dns.google [8.8.8.8]

    Traccia completata.

    MG-105 NO OK

    C:\Windows\System32>nslookup d.nebula.zyxel.com
    Server: TUF-AX6000-6F82
    Address: 192.168.50.1

    Risposta da un server non autorevole:
    Nome: d.nebula.zyxel.com
    Addresses: 34.246.20.161
    34.245.88.134
    34.243.116.158
    63.32.141.172
    54.154.22.135
    54.76.217.223
    54.73.103.137
    52.210.229.217
    52.210.12.1
    52.48.115.44

    C:\Windows\System32>tracert 8.8.8.8

    Traccia instradamento verso dns.google [8.8.8.8]
    su un massimo di 30 punti di passaggio:

    1 <1 ms <1 ms <1 ms TUF-AX6000-6F82 [192.168.50.1]
    2 9 ms 9 ms 9 ms 100.64.255.255
    3 8 ms 9 ms 9 ms 195.32.27.225
    4 9 ms 9 ms 9 ms 195.32.27.246
    5 13 ms 9 ms 9 ms 72.14.221.8
    6 9 ms 9 ms 9 ms 108.170.245.65
    7 9 ms 9 ms 9 ms 142.251.235.173
    8 9 ms 8 ms 8 ms dns.google [8.8.8.8]

    Traccia completata.

  • PeterUK
    PeterUK Posts: 3,740  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary
    edited June 2023

    unplug the switch that works and test the switch that does not to see if it works also unplug replug Ethernet to the switch to trigger DHCP

  • Zotme
    Zotme Posts: 8
    First Comment
    edited June 2023

    tried several times, don't work….

  • PeterUK
    PeterUK Posts: 3,740  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary
    edited June 2023

    You can ping 8.8.8.8 and DNS 192.168.50.1 through the switch and it being Unmanaged there is no traffic it can block.

    get tcping

    https://download.elifulkerson.com/files/tcping/0.39/x64/

    run in cmd

    tcping64 8.8.8.8 53

  • Zotme
    Zotme Posts: 8
    First Comment

    Probing 8.8.8.8:53/tcp - Port is open - time=9.933ms
    Probing 8.8.8.8:53/tcp - Port is open - time=9.893ms
    Probing 8.8.8.8:53/tcp - Port is open - time=10.077ms
    Probing 8.8.8.8:53/tcp - Port is open - time=9.602ms
    Ping statistics for 8.8.8.8:53
    4 probes sent.
    4 successful, 0 failed. (0.00% fail)
    Approximate trip times in milli-seconds:
    Minimum = 9.602ms, Maximum = 10.077ms, Average = 9.876ms

    No internet in Chrome, Brave, Steam client, etc…
    New test... Macbook Air with an hub usb with ethernet. Get an IP from DHCP. no internet.

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