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What will happen when my switch becomes STP new root?
The switch will re-elect the STP root and re-learn the MAC table. This will cause the connection under this switch to be temporarily disconnected.
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How to fix my switch keeps become STP new root?
The switch becomes the STP new root means the connection to the root has an issue, like disconnected or BPDU packets missing, this will cause the switch to re-elect the STP root and re-learn the MAC table. This will cause the connection under this switch to be disconnected temporarily. Please check whether the connection…
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Why event log shows my switch becomes STP new root?
This could be because this switch and its uplink switch/device disconnected or something caused it not to receive the BPDU packet from the uplink switch/device. Please check the connection between them.
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Why does Nebula show my core switch is not RSTP root?
Nebula default STP bridge priority is 32768 for all switches. This may cause the root bridge is not your core switch due to spanning tree root bridge election mechanism. If you want your core switch to become the root bridge, you can reference this FAQ:
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Do I need to change the STP bridge priority on Nebula?
Nebula set the default STP bridge priority to 32768 for each switch. Since all switches use the same bridge priority, the switches will compare the MAC address to elect the root bridge. If you want specific switch to become the root bridge, change its STP bridge priority with lower number will help. To set the STP bridge…
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Where can I configure bandwidth management for switch ports?
Follow the steps outlined below to set up the bandwidth on individual ports. Step: 1. Go to Configure > Switch ports. 2. On the switch ports page, choose the ports you wish to configure, and then click the "Edit" button. 3. Enable the bandwidth control feature. 4. Once the feature is enabled, Ingress/Egress options will…
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What situation requires the use of Nebula Loop Guard?
Use Nebula Loop Guard when you want to prevent network issues caused by loops. Loops may happen when at the side of the switch's access port connection. This can lead to network congestion and instability. Loop Guard sends out special probe packets to detect these loops. If a loop is detected, it automatically shuts down…
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What is Nebula's Auto Configuration Recovery feature?
Nebula's Auto Configuration Recovery is a feature designed for network switches. It automatically restores the switch to a previous stable configuration if a newly applied configuration leads to a disconnection from the Nebula network. This feature is primarily aimed at maintaining network stability and preventing…
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What should be noted when setting IP Source Guard - DHCP Snooping trust?
When configuring DHCP snooping trust, ensure that the port is not set to "protected port". Setting a port to "protected port" will render DHCP snooping untrusted on that port. To designate a port as untrusted, it should be set to a protected port.
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What are the steps to configure port mirroring in the Nebula Control Center?
To configure port mirroring, log in to your Nebula Account via Zyxel Nebula, navigate to Configure > Switches > Switch Settings, find Port mirroring and click on Add. Select the Switch and which port(s) you want to have monitored, and choose a destination port. Finally, save the settings.
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How does port mirroring contribute to diagnosing network-related problems?
Port mirroring allows network administrators to inspect the traffic passing through a mirrored port, which is crucial for pinpointing the source of network issues or monitoring network activity. By having a duplicate stream of data, it is possible to analyze the traffic without affecting network performance.
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What is the purpose of port mirroring in network troubleshooting?
Port mirroring is used to monitor and analyze traffic on a specific switch port. It duplicates network traffic from one switch port and forwards it to another designated port for inspection, without disrupting the original network flow. This is essential for diagnosing and debugging network-related problems.
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How can you filter traffic by IP address or protocol in Wireshark after capturing packets?
After capturing packets in Wireshark, you can filter the traffic by IP address using filters like ip.addr==192.168.1.1, or by protocol using filters like ip.proto==50 for protocol-specific analysis.
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How can storm control be enabled in the Nebula to mitigate multicast/broadcast storms?
In the Nebula Control Center, navigate to Switch > Monitor > Switch > Port, enable Storm Control, and set a limit, starting with 100 packets per second and adjusting as necessary.
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When finding a multicast storm, what type of traffic should you filter in Wireshark?
In Wireshark, you should filter for multicast and broadcast traffic to identify excessive packet flow from a particular device.
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Where do multicast and broadcast packets usually originate from in a network?
Broadcast packets are sent across the entire network to reach all devices, often for device discovery or communication availability. Multicast traffic targets a specific broadcast domain and is used for applications like streaming video over IP.
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How can multicast and broadcast storms affect network performance?
Multicast and broadcast storms can inundate a network with excessive traffic, impeding network performance, straining network equipment resources, and potentially causing network disruptions.
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What are the typical signs that indicate the presence of multicast or broadcast storms in a network?
The typical signs include monitoring the network logs for excessive multicast or broadcast traffic and observing network slowdown or instability, which often affects specific segments of the network.
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How to identify and resolve multicast and broadcast storms in your network?
This article will show how to see what device which is causing multicast or broadcast storms in your network and if there is a loop in the network. We will take a look at multicast storms & broadcast storms, where it comes from, how to find a multicast/broadcast storm. How to use the switch logs, port mirror (mirroring)…
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Troubleshooting network traffic with Nebula switch port mirroring
This guide aims to assist you in troubleshooting and resolving network traffic issues with your Nebula switch by utilizing port mirroring. Port mirroring enables you to monitor and analyze traffic on a specific switch port, making it an essential tool for diagnosing and debugging network-related problems. In this article,…