Nebula - The SNMP is not working on the new device

nubira

Hi,

We purchased a new GS1920-24HP switch. SNMP is enabled at the site level and works fine with all other switches, but not with this new one. Please let me know what I can do and how I can enable SNMP on the new switch.

Thanks!

Zyxel_Luna

Hi @nubira ,

Thank you for reaching out. If you have already enabled SNMP at the Site level according to the FAQ [How to activate/enable SNMP on Switch in NCC?], and SNMP is functioning properly on your other switches, the issue is likely specific to the new switch. Please check the following points:

1. Configuration Status: In Nebula, ensure the new GS1920-24HP shows as Online and its configuration status is Up to date.
2. Firmware Version: Upgrade the new switch to the same firmware version as your other switches via Site-wide > Configure > Firmware management.
3. Network Reachability: Verify that your SNMP server can reach the switch's management IP (e.g., via ping), and confirm that UDP port 161 is not blocked by any firewall or ACL along the network path.

If the issue persists, please provide the following details to help us investigate:

• The failure symptom: whether the SNMP server receives no response at all (timeout) or only fails to query specific OIDs.
• A brief overview of your network topology.
• Please enable Remote Support access by following the FAQ below, and send us a private message (PM) with your Org/Site name along with the MAC address or Serial Number (S/N) of the affected switch so we can assist you further:
• [Nebula] How to turn on Zyxel Support Access? — Zyxel Community

Thank you!

nubira

Hi,

All the switches and the SNMP server operate on the same subnet. SNMP works fine on all the GS1920-24HP switches that were purchased previously. However, the newly purchased GS1920-24HPv2 switch is experiencing timeout errors.
All switches are online and their configurations and firmware are up to date. Ping is also working. There is no firewall.

Enabling Remote Support is problematic. Are there any other options?

Thank you!

Zyxel_Luna

Hi @nubira,

If possible, please first restart SNMP in NCC under [Site-wide > Configure > Site settings] (disable it -> save -> re-enable it -> save).

Once the configuration status is Up to date, please try polling/monitoring this switch via SNMP again.

If the SNMP server still receives no response from the switch, please log in to the device's local Web GUI (Username: admin, Password: the local credentials configured in your Site settings):

• Check whether the SNMP configuration under [SYSTEM > SNMP] is correct.

• Ensure SNMP is enabled under [Security > Service Access Control].

• Finally, verify that the SNMP service status is displayed as enabled on the Dashboard.

If the SNMP settings on the Web GUI are incorrect (not in sync with the settings in NCC), please go to Site-wide > Devices > Switches > {Device’s name}, then click Live tools > Reprovision.

Please feel free to reach out if you have any questions. Thank you.