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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…
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Cloud Stacking Mode Select
Cloud Stacking Mode Select In Nebula 18.00, we've introduced enhancements to the switch stacking capabilities, specifically focusing on the XGS 2220. This article will guide you through the new features related to stacking mode selection and provide important operational details. Overview of Stacking Modes We support two…
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How to configure DHCP Relay with option 82 on Nebula switch? (Pro Pack required)
The article guides how and where to configure DHCP Relay with option 82 on the Nebula switch. 1. Navigate to Site-wide > Configure > Switches > IP & Routing > click Add button 2. Select a switch to fill in the necessary values, and create an option 82 profile. 3. Name the profile and select the demanded ID and sub-option.…
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How to configure DHCP Relay on Nebula switch? (Pro Pack required)
The article guides how and where to configure DHCP Relay on the Nebula switch. 1. Navigate to Site-wide > Configure > Switches > IP & Routing > click Add button 2. Select a switch to fill in the necessary values, and click the Create button. 3. Check if the interface is well-created on NCC. You can refer to the Device…
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Why does my XS/XMG1930 suddenly have a Nebula Pro pack license?
This is because you assigned an access L3 license to XS/XMG1930. Access L3 License for XMG/XS1930 series on Nebula comes with a 1-Year Nebula Pro Pack License. For more details, please reference https://community.zyxel.com/en/discussion/19271/release-note-nebula-control-center-17-20-software-release
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What should I do after I assign access L3 license to my XS/XMG1930?
After assigning access L3 license to XS/XMG1930, please remember to access your switch to update the service status. If the switch doesn't update the service status, the switch configuration status will keep Not up to date. For more detailed information, please reference this FAQ:…
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Why is my XS/XMG1930 switch configuration status Not up to date?
If your switch is XS1930 or XMG1930 series and assigned an access L3 license, this means your switch hasn't updated the service status. Please access your switch to update the service status and reboot. For more information, please reference this FAQ:…
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How to enable access L3 license on Nebula switch?
The Nebula switch-related license is a little different from the Nebula firewall-related license. This topic will guide you on enabling the access L3 license on Nebula Switch. Purchase your access L3 license. You can purchase it from your reseller or via the Zyxel Marketplace. Register the access L3 license on Nebula.…
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How to register and activate the Basic Routing License on XS3800-28?
To fully utilize the OSPF (Open Shortest Path First) routing capabilities on the XS3800-28 switch, users must register and activate the Basic Routing license. This guide details the steps necessary to register the license through the MyZyxel portal and subsequently activate it on your device, ensuring the switch is…
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If the license has expired, would it affect the VPN connection between two ZYXEL devices?
You can still use the VPN service even if the license has expired; the VPN tunnel feature won't become invalid after the license expires.
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How to disable the SSH on Nebula switch?
In the current stage, we cannot disable SSH on Nebula. However, we can still use the CLI to disable the SSH protocol. Please note that this is only supported by firmware 4.90 or above. CLI: no remote-management <index> service <[ssh]>
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How to change the NTP server on Nebula switch?
The current design of the NTP server is built into the switch, and it cannot be changed. Therefore, please ensure that your networking environment allows UDP port 123 for the NTP domain, either 0.pool.ntp.org or 1.pool.ntp.org.
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Which NTP servers does Nebula switches utilize?
Nebula switches are configured to use 0.pool.ntp.org and 1.pool.ntp.org as their default Network Time Protocol (NTP) servers. This configuration ensures that all devices connected to the Nebula Control Center maintain accurate and synchronized time settings to display correct device status, uplink usage, logs, and even…
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Unlocking Enhanced Network Capabilities with the Access L3 License for Zyxel Switches
Unlocking Enhanced Network Capabilities with the Access L3 License for Zyxel Switches In the evolving landscape of network management and optimization, Zyxel Networks continues to push the boundaries of what's possible with its cutting-edge solutions. A prime example of this innovation is the introduction of the Access L3…