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Description
Overview
Essential details：A4H254-8F8T P0973JP Enterasys® A4 Fast Ethernet Switch
Product Description
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).
A4H254-8F8T P0973JP
Product parameter
When you install and connect all the high‐speed stacking cables to the switches in the stack, the following occurs once power is applied to the switches:
• The switch that will manage (manager) the stack is automatically established with all other switches established as member switches in the stack. When the switches complete their initialization, one of the switches in the stack will illuminate its MGR LED, indicating that it is the stack manager. The MGR LED on each member switch will be off.
• The hierarchy of the switches that will function as backup manager is also determined in case the current manager malfunctions, is powered down, or is disconnected from the stack.
• The Console port on each member switch is deactivated. Only the Console port on the manager switch is active for out‐of band configuration to set the IP address, password, and other configuration settings
• The switch that will manage (manager) the stack is automatically established with all other switches established as member switches in the stack. When the switches complete their initialization, one of the switches in the stack will illuminate its MGR LED, indicating that it is the stack manager. The MGR LED on each member switch will be off.
• The hierarchy of the switches that will function as backup manager is also determined in case the current manager malfunctions, is powered down, or is disconnected from the stack.
• The Console port on each member switch is deactivated. Only the Console port on the manager switch is active for out‐of band configuration to set the IP address, password, and other configuration settings
APPLICATION
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.
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.
Shipping
Superiority products A4H254-8F8T P0973JP Enterasys® A4 Fast Ethernet Switch
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