A4H254-8F8T Enterasys

• Your Enterasys Networks service contract number

• A description of the failure

• A description of any action(s) already taken to resolve the problem (for example, changing

mode switches or rebooting the unit)

• The serial and revision numbers of all involved Enterasys Networks products in the network

• A description of your network environment (such as layout, cable type, other relevant

environmental information)

• Network load and frame size at the time of trouble (if known)

• The device history (for example, if you have returned the device before, or if this is a recurring

problem)

• Any previous Return Material Authorization (RMA) numbers

Description:

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.

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