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How to determine storm control is enabled?
Currently, the storm control status can be check on the switch ports list. However, user can't determine it is working via event log since the logs are the same between storm control enabled and disabled. Note: The event log will be enhanced in the future firmware release.
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How to enable flow control via command line in Nebula mode?
Please access the switch and enter these commands: #configure (configure)# interface port-channel XX (config-interface)# flow-control (config-interface)# exit (configure)# exit #write memory Note: Only the model that support CLI configuration support this FAQ. Like XS3800, XGS2220, GS2220, XMG/XS1930(with L3 license)
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Is there anything that needs to be confirmed when connecting a third-party GBIC to a Zyxel switch?
Is there anything that needs to be confirmed when connecting a third-party GBIC to a Zyxel switch? Ensure the fiber cable type matches the GBIC module type: Use multi-mode fiber cables for SR (short-range) GBIC modules. Use single-mode fiber cables for LR (long-range) GBIC modules. Monitor the DDMI (Digital Diagnostics…
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What is the proper setting for the port type: trunk or access, on a switch?
If the peer device is connected to another switch or access point, it is recommended to set the port type to trunk. However, if the peer device is an end device or VLAN-unaware such as like IP phone, set the port type to access and assign the appropriate PVID.
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Why can't my switches connect using a DAC cable?
Zyxel XGS/XMG/XS series switches support SFP+ and DAC-10G on fiber ports. To maintain network stability, the port's media type must match the cable in use. If the media type and cable are mismatched, the ports may fail to link, repeatedly link up and down, or experience high CRC error counts. This guide explains how to…
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Why my wireless guest VLAN cannot get the IP?
When configuring the guest VLAN, it is also necessary to configure L2 isolation. Typically, the gateway's MAC address should be added to the whitelist. If the issue is that the end client fails to obtain a VLAN IP address, please access the gateway and use the CLI commandshow interface VLANxxx. This will display the VLAN…
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Why am I unable to set up LACP/static trunk on my switch?
the inability to configure LACP/static trunk on your switch may be due to Nebula's restrictions designed to prevent connection issues. Here are the rules: Normal ports can only form a trunk with other normal ports, not with combo ports. Offline combo ports can only form a trunk with other offline combo ports. Online combo…
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Why does traffic from the management VLAN always appear when a PC is connected to switch ports?
Nebula Switches (in cloud mode) have a built-in mechanism to prevent them from going offline when uplink ports are changed. By default, the management VLAN is applied to all switch ports. To adjust this behavior, navigate to Configure > Switches > Switch ports on the NCC. Check the settings to see if the switch ports are…
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How to enable Flow Control on a switch port?
This article guides users on enabling the Flow Control feature on a switch port via Nebula CC. Before enabling Flow Control on a switch port, please check if your switch model supports Flow Control on Nebula. You can check the NCC Device function table > Switch Tab and search for "Flow Control". Configure Flow Control an…
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Why my 10G SFP port cannot link up normally?
Some users might encounter that their 10G SFP port cannot link up normally. You may reference these FAQs to check this issue: How to fix 10G SFP+ port link issue? (With fiber transceiver) — Zyxel Community How to fix 10G SFP+ port link issue? (With RJ45 transceiver) — Zyxel Community How to fix 10G SFP+ port link issue?…
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How to fix 10G SFP+ port link issue? (With DAC cable)
To fix the 10G SFP+ port link issue, with the DAC cable, please change the media type of this SFP port from SFP+ (default value) to DAC 10G first. If you didn't change the media type, the link may not be up or keep on connecting and disconnecting with many CRC error counts. If the issue still exists after configuration,…
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How to fix 10G SFP+ port link issue? (With RJ45 transceiver)
To fix the 10G SFP+ port link issue, with the RJ45 transceiver, please change the transceiver/change the SFP port to check. If the issue still exists, please navigate to the Nebula category to raise your problem.
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How to fix 10G SFP+ port link issue? (With fiber transceiver)
To fix the 10G SFP+ port link issue, with the fiber transceiver, please check the DDMI of the issue port first. If the current operating parameters of the issue port are out of the high/low range, please have a cross-test, change the fiber/change the SFP transceiver/change the SFP port, to check this issue. If the switch…
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How to use switch with PoE enabled only?
If you are looking to enable switch PoE only in specific scenarios or troubleshooting, please disable switch port via Site-wide > Configure > Switches > Switch ports. Select multiple switch ports if needed. Disable port and keep PoE enable If you encounter any other issues, please help create a post here and…
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How to resolve the switch port cannot link up with DAC cable?
If you have an XGS, XMG, or XS series switch, please follow these steps: Go to Configure > Switch Port > Port Setup Locate the connecting ports Change the Media Type from SFP+ to DAC10G
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Switch Port Profiles
The introduction of switch port profiles in Zyxel's Nebula Control Center (NCC) aims to address several challenges faced by network administrators. This feature simplifies switch configuration management, especially in scenarios where switches are removed and replaced, and provides a streamlined approach to applying…
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How Port Isolation Works
The ports with port isolation enabled cannot communicate with each other. They can communicate only with the CPU management port of the same Nebula Device and the Nebula Device’s other ports on which the isolation feature is not enabled.
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How to Change Switch IP on Nebula?
Changing the IP address of a switch in the Nebula Cloud Networking platform is a straightforward process. This can be useful if you need to reorganize your network or align your IP scheme. Follow these steps to change the switch IP on Nebula: Steps Log in to Nebula Control Center: Go to the Nebula Control Center and log in…
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How do I change the management VLAN on APs all at once?
To change the management VLAN on all Access Points (APs) at once in Nebula, you can use the Nebula Control Center's batch configuration feature. Follow these steps: Due to AP do not have the global management VLAN control in NCC, however we can still use batch setting on switch ports all at once. Go to switch port setting…
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How to check if our SFP is in the normal working range?
If the link status of your SFP port changes frequently, it's important to ensure that your SFP (Small Form-Factor Pluggable) module is operating within the normal working range. Here are steps you can take to diagnose and address any issues: Verify DDMI Data: Utilize Digital Diagnostics Monitoring Interface (DDMI) to…