Spanning Tree Algorithm Configuration

STP and RSTP BPDUs are transmitted as untagged frames, and will cross any VLAN boundaries.

STP Mode – If the switch receives an 802.1D BPDU (i.e., STP BPDU) after a port’s migration delay timer expires, the switch assumes it is connected to an 802.1D bridge and starts using only 802.1D BPDUs.

RSTP Mode – If RSTP is using 802.1D BPDUs on a port and receives an RSTP BPDU after the migration delay expires, RSTP restarts the migration delay timer and begins using RSTP BPDUs on that port.

Command Attributes - Basic Configuration of Global Settings

•Spanning Tree State Enables/disables STA on this switch. (Default: Enabled)

•Spanning Tree Type Specifies the type of spanning tree used on this switch:

•STP: Spanning Tree Protocol (IEEE 802.1D; i.e., when this option is selected, the switch will use RSTP set to STP forced compatibility mode)

•RSTP: Rapid Spanning Tree (IEEE 802.1w) RSTP is the default.

• Priority

Bridge priority is used in selecting the root device, root port, and designated port. The

 

device with the highest priority becomes the STA root device. However, if all devices

 

have the same priority, the device with the lowest MAC address will then become the

 

root device.

 

• Default: 32768

 

• Range: 0-61440, in steps of 4096

 

• Options: 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864,

 

40960, 45056, 49152, 53248, 57344, 61440

Command Attributes - Root Device Configuration

•Hello Time: Interval (in seconds) at which this device transmits a configuration message.

•Default: 2

•Minimum: 1

•Maximum: The lower of 10 or [(Max. Message Age / 2) -1]

•Maximum Age: The maximum time (in seconds) a device can wait without receiving a configuration message before attempting to reconfigure. All device ports (except for designated ports) should receive configuration messages at regular intervals.

Any port that ages out STA information (provided in the last configuration message) becomes the designated port for the attached LAN. If it is a root port, a new root port is selected from among the device ports attached to the network.

Note: References to “ports” in this section mean “interfaces,” which includes both ports and trunks.

•Default: 20

•Minimum: The higher of 6 or [2 x (Hello Time + 1)].

•Maximum: The lower of 40 or [2 x (Forward Delay - 1)]

•Forward Delay: The maximum time (in seconds) this device will wait before changing states (i.e., dis- carding to learning to forwarding). This delay is required because every device must receive information about topology changes before it starts to forward frames. In addition, each port needs time to listen for conflicting information that would make it return to a discarding state; otherwise, temporary data loops might result.

•Default: 15

•Minimum: The higher of 4 or [(Max. Message Age / 2) + 1]

•Maximum: 30

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AMX NXA-ENET24 Command Attributes Basic Configuration of Global Settings, Command Attributes Root Device Configuration
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NXA-ENET24 specifications

The AMX NXA-ENET24 is a versatile and powerful networked control interface designed to meet the growing demands of modern AV systems. This network switch offers an exceptional combination of reliability, performance, and scalability, making it an ideal choice for professional environments such as conference rooms, educational facilities, and control rooms.

One of the key features of the NXA-ENET24 is its 24-port configuration, allowing for extensive connectivity options. Each port supports 10/100/1000 Mbps speeds, ensuring that high bandwidth applications are handled with ease. Additionally, the switch incorporates advanced auto-negotiation technology, which automatically configures the optimal speed and duplex mode for connected devices. This ensures seamless connectivity and minimizes the risk of network disruptions.

The NXA-ENET24 is designed with advanced management capabilities, including support for VLANs, which helps to segment network traffic for enhanced security and performance. Network administrators can easily create virtual local area networks to optimize traffic flow and reduce congestion. This feature is particularly beneficial in environments where multiple AV systems operate concurrently.

Another significant characteristic of the NXA-ENET24 is its support for Power over Ethernet, or PoE. This feature enables the switch to deliver electrical power alongside data through the network cables. As a result, devices such as IP cameras, VoIP phones, and wireless access points can be powered directly from the switch, simplifying deployment and reducing the need for additional power sources.

Monitoring and management of the switch are made easier through a user-friendly interface. The NXA-ENET24 supports SNMP for network management, allowing users to monitor performance metrics, configure settings, and receive alerts in case of issues. This level of oversight is crucial for maintaining the stability of AV systems in mission-critical applications.

Durability is another hallmark of the NXA-ENET24 design. The switch features a robust chassis that is engineered to withstand the rigors of professional use. With cooling mechanisms in place and a fanless design, the NXA-ENET24 operates quietly and efficiently, making it suitable for environments where noise is a concern.

In conclusion, the AMX NXA-ENET24 is a powerful, reliable, and feature-rich network switch that effectively supports modern AV applications. With its extensive connectivity options, advanced management capabilities, PoE support, and durable design, it is an excellent choice for integrators and organizations looking to optimize their network infrastructure.
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