A4H124-24FX P0973JN Enterasys®A4 快速以太网交换机

A4快速以太网交换机是存储和转发堆叠交换机，可以进行调整和扩展，以帮助满足您的网络需求。这些可堆叠交换机为多达8台A4交换机的堆叠组提供管理平台和上行链路到网络骨干网。
您还可以使用这些交换机的冗余电源，以帮助防止由于交换机或交流电源的内部电源故障而停机。
您可以将堆叠交换机安装在平面上或标准的19英寸机架上，并使用WebView™应用程序、CLI交换命令和/或SNMP配置堆叠交换机功能。
A4堆叠交换机可以通过RJ45连接器，SFP端口或千兆以太网端口连接到以太网网络或工作站，具体取决于您的型号配置。的
SFP接口支持可选的可插拔模块，支持热插拔。A4交换机的1000Base – T内置RJ45堆叠接口可在单机模式(非堆叠)下配置为标准的10/100/1000Base – T交换机端口。

堆栈连接
交换机前面板提供RJ45接口，用于堆叠组网。堆叠线缆必须使用5类及以上标准UTP线缆。
冗余供电能力
A4具备电源冗余功能，连接可选的外部冗余电源:
•STK‐RPS‐150PS, 150瓦直流电源，为A4交换机提供冗余电源。
当内部电源故障时，RPS会自动接替内部电源的工作，不会影响网络流量。内部电源和RPS都有各自的交流电源连接，这样可以将每个电源连接到不同的交流电源电路，以增加交流电源的冗余。
管理
交换机的管理可以是带内管理或带外管理。可以使用Telnet、Enterasys Networks的NetSight®管理应用程序或WebView应用程序进行带内远程管理。带外管理通过前面板上的DB9 Console接口连接器提供，使用VT100终端或VT100终端模拟器。
使用WebView配置交换机
Enterasys Networks的基于HTTP的Web管理应用程序(WebView)是一个直观的Web工具，用于简单的管理任务。
通过CLI命令配置交换机
通过CLI命令，可以完成更完整的交换机堆叠配置管理任务。
有关CLI命令集信息和模块配置方法，请参见《Enterasys A4 CLI Reference》。

The A4 Fast Ethernet switches are store and forward stackable switches that can be adapted and scaled to help meet your network requirements. These stackable switches provide a management platform and an uplink to a network backbone for a stacked group of up to eight A4 switches.
You can also use a redundant power supply with these switches to help prevent downtime due to an internal power supply failure in the switch or AC power source.
You can install the stackable switch on a flat surface or into a standard 19‐inch rack, and configure the stackable switch functions using the WebView™ application, CLI switching commands, and/ or SNMP.
The A4 stackable switch can connect to Ethernet networks or workstations through RJ45 connectors, SFP ports, or Gigabit Ethernet ports, depending on your model’s configuration. The
SFP ports support optional pluggable transceivers, which are hot swappable. The 1000Base‐T built‐in RJ45 stacking ports on the A4 switches can be configured as standard 10/100/1000Base‐T switch ports when the unit is in standalone mode (not stacked).

Stack Connections
The switches have front panel RJ45 ports for connections in a stack configuration. The stacking cables used for the connections must be standard Category 5 or better UTP cable.
Redundant Power Supply Capability
The A4 has power supply redundancy capability when connected to an optional external redundant power supply:
• STK‐RPS‐150PS, a 150 watt DC power supply for redundant power for A4 switches.
If the internal power supply fails, the RPS automatically assumes the role of the internal power supply without interrupting network traffic. The internal power supply and RPS each have their own AC power connection, which enables the connection of each power supply to a different AC power circuit for additional AC power source redundancy.
Management
Management of the switch can be either in‐band or out‐of‐band. In‐band remote management is possible using Telnet, Enterasys Networks’ NetSight® management application, or the WebView application. Out‐of‐band management is provided through the DB9 Console port connector on the front panel using a VT100 terminal or a VT100 terminal emulator.
Switch Configuration Using WebView
Enterasys Networks’ HTTP‐based Web management application (WebView) is an intuitive web tool for simple management tasks.
Switch Configuration Using CLI Commands
The CLI commands enable you to perform more complete stackable switch configuration management tasks.
For CLI command set information and how to configure the module, refer to the Enterasys A4 CLI Reference.