Spanning Tree Algorithm Configuration

Command Attributes (Cont.)

•Priority: Defines the priority used for this port in the Spanning Tree Protocol. If the path cost for all ports on a switch are the same, the port with the highest priority (i.e., lowest value) will be configured as an active link in the Spanning Tree. This makes a port with higher priority less likely to be blocked if the Spanning Tree Protocol is detecting network loops.

Where more than one port is assigned the highest priority, the port with lowest numeric identifier will be enabled.

•Default: 128

•Range: 0-240, in steps of 16

•Path Cost: This parameter is used by the STP to determine the best path between devices. There- fore, lower values should be assigned to ports attached to faster media, and higher val- ues assigned to ports with slower media. (Path cost takes precedence over port priority.)

Note that when the Path Cost Method is set to short (page 330), the maximum path cost is 65,535.

•Range:

•Ethernet: 200,000-20,000,000

•Fast Ethernet: 20,000-2,000,000

•Gigabit Ethernet: 2,000-200,000

•Default:

•Ethernet – Half duplex: 2,000,000; full duplex: 1,000,000; trunk: 500,000

•Fast Ethernet – Half duplex: 200,000; full duplex: 100,000; trunk: 50,000

•Gigabit Ethernet – Full duplex: 10,000; trunk: 5,000

•Admin Link Type: The link type attached to this interface.

•Point-to-Point – A connection to exactly one other bridge.

•Shared – A connection to two or more bridges.

•Auto – The switch automatically determines if the interface is attached to a point-to- point link or to shared media. (This is the default setting.)

•Admin Edge Port You can enable this option if an interface is attached to a LAN segment that is at the end (Fast Forwarding): of a bridged LAN or to an end node. Since end nodes cannot cause forwarding loops, they can pass directly through to the spanning tree forwarding state.

Specifying Edge Ports provides quicker convergence for devices such as workstations or servers, retains the current forwarding database to reduce the amount of frame flood- ing required to rebuild address tables during reconfiguration events, does not cause the spanning tree to initiate reconfiguration when the interface changes state, and also over- comes other STA-related timeout problems. However, remember that Edge Port should only be enabled for ports connected to an end-node device. (Default: Disabled)

•Migration: If at any time the switch detects STP BPDUs, including Configuration or Topology Change Notification BPDUs, it will automatically set the selected interface to forced STP-compatible mode. However, you can also use the Protocol Migration button to manually re-check the appropriate BPDU format (RSTP or STP-compatible) to send on the selected interfaces.

• Default: Disabled

Configuring Interface Settings - Web

Click Spanning Tree, STA Port Configuration or STA Trunk Configuration. Modify the required attributes, then click Apply.

FIG. 125 Web - Configuring Spanning Tree per Port

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AMX NXA-ENET24 manual Configuring Interface Settings Web, Web Configuring Spanning Tree per Port
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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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