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How to process/submit an RMA?
When any of Nebula devices determined a hardware issue, causing the device not to function properly, please help check the warranty. For the EMEA region, follow the guidelines to check the device warranty and submit an RMA. Submit an EMEA RMA request For the US region, use the link below to submit an RMA request. Submit a…
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One of switches shows offline or disconnected. What could be wrong?
When the switch shows offline on NCC, but the services are working properly, you may check our Switch Troubleshooting Guide for verification. If you encounter any other issues, please help create a post here and tag @Zyxel_CSO, or create a ticket directly to reach us.
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Where can I find the MAC address table in Nebula for a switch?
This guide will show you how to access the MAC address table for a switch managed through the NCC. Step to find MAC address table: 1.Login to NCC with your account, navigate to the Switch list page and select one of your switches. 2.Run the MAC table located in the Live Tools section. If you encounter any other issues,…
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How to create a private VLAN on switch?
Currently, Nebula does not support private VLAN feature. You may consider using port isolation or Guest interface on the firewall model to find a suitable solution. If you encounter any other issues, please help create a post here and tag @Zyxel_CSO, or create a ticket directly to reach us.
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How can I find information about the PoE budget of a switch?
Determining the Power over Ethernet (PoE) budget for a network switch is essential for network planning, especially when deploying devices that rely on PoE for power, such as IP cameras, wireless access points, and VoIP phones. This guide will direct you to find the PoE budget information for Zyxel switches. Steps: 1.…
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Why there is still have the broadcast storm logs even the broadcast storm is disble?
Nebula's storm control is set to monitor mode by default, so you will still see the logs even if it has been disabled. Please note that it won't take any action and is only for monitoring. If you would like to enable it, go to Configure > Switch ports > Storm control, and change it from disabled to enabled.
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Switches are offline but the directly connected APs are all online, how?
If you've encountered an issue where Switches are offline but the directly connected APs are all online, you may follow our Switch Troubleshooting Guide to find the root cause. If you encounter any other issues, please help create a post here and tag @Zyxel_CSO, or create a ticket directly to reach us.
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What switch features are supported on each model within the NCC?
To check which features are supported on each switch model via the NCC, navigate to the Help page and refer to the Device Function Table. You may also click here to access the page directly (Require NCC account to login) If you encounter any other issues, please help create a post here and tag @Zyxel_CSO, or create a…
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Can I check the hardware status by SNMP?
Yes, you can monitor the hardware status of your switches using Simple Network Management Protocol (SNMP). SNMP allows network administrators to retrieve information and monitor the status of network devices, including switches, routers, and access points. Please download our MIB file via Zyxel down library. Take CPU usage…
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How can I delete a switch from Nebula?
To delete (unregister) a switch from Nebula, you need to remove it from the Nebula organization, not just from the Nebula site. Path: License & Inventory > Device Select the switch you want to delete. Click Action and choose Remove from the Organization. Click the Yes button to finish.
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How do I get my switch to connect with Nebula?
If your switches encounter an issue where they cannot be online on Nebula, please follow the Nebula Switch Troubleshooting Guide to tackle your issue. If you encounter any other issues, please help create a post here and tag @Zyxel_CSO, or create a ticket directly to reach us.
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Can't get GS1350 to connect to Nebula
The possible reason that a GS1350 cannot get online to Nebula, but the network can reach to interface is because the Nebula Control Center(NCC) Discovery is disabled. Please refer to the like below to enable the option. Please note that GS1350 with firmware v4.90 does not have this issue. The NCC Discovery is default…
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Why Switches won't connect to the Nebula/cloud?
If your switches encounter an issue where they cannot be online on Nebula, please follow the Nebula Switch Troubleshooting Guide to tackle your issue. If you encounter any other issues, please help create a post here and tag @Zyxel_CSO, or create a ticket directly to reach us.
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Why is the switch offline during working hours but online out of working hours?
This is more likely because there is an IP conflict in your network. Please try: Change your switch's IP address first. Check the ARP table on your firewall, if it supports this function, and find the conflict device. Once you find it, please change its IP address.
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Why does my switch keep going online and offline?
This could because: Uplink unstable. Please check your modem/firewall’s internet connection and the connection between the modem/firewall and the switch. The MTU size of the modem/firewall is not the default value (1500 bytes). Please change the MTU size back to the default value. There is an IP conflict. You can change…
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Does Nebula switch support jumbo frame?
Yes, Nebula switch supports jumbo frame and is enabled by default, with support for frame sizes of up from 9K to 12K (depends on switch model). Jumbo frames allow for larger Ethernet frames than the standard 1500-byte frames, which can be useful in certain networking scenarios, such as data center environments or when…
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Why my switch cannot sync the access L3 license?
Please check if your switch: Has a default gateway and can connect to the Internet. Has set domain name server (DNS server) to be able to resolve the domain. Check if your firewall denies *.myzyxel.com. Check if your switch system time is not up to date. Please correct the system time or synchronize with the time server.…
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How to assign/change an IP address to Nebula switch?
This article guides how to assign/change an IP address to a Nebula switch, by using GS1920 switch. After you register the switch to your Organization and site in License & Inventory, navigate to Site-wide > Devices > Switches > "Your switch". Simply click the icon beside switch IP address to assign or change a static IP…
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Switch Flow Control
Switch Flow Control Introduction to Switch Port Flow Control Switch port flow control is a critical feature for managing network congestion and ensuring smooth data transmission across the network. This article provides a comprehensive overview of switch port flow control, its benefits, and how to enable it on Zyxel…
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Monitoring Stacking PoE Status on NCC
Monitoring Stacking PoE Status on NCC With the introduction of PoE support in our cloud-managed stacking switches, Nebula 18.0 provides comprehensive tools for monitoring PoE status and power consumption. This feature allows users to effectively manage and monitor the power usage of stacked PoE switches. Here’s what you…