through a procedure called auto-negotiation. Auto-negotiation involves probing the capability of the network using low-level signaling techniques to select compatible Ethernet speeds. Auto-negotiation was originally developed to make the migration from traditional Ethernet to Fast Ethernet products easier.

Redundant images in firmware

The switch stores up to two different software images, called image1 and image2, as well as boot software, called boot. When downloading new software, the ability to specify where it is to be placed (into image1, image2, or boot) is activated.

For example, if the active image is currently loaded into image1, load the new image software into image2. This allows a test of the new software and the option to revert back to the original image stored in image1, if needed.

CAUTION: Unlike the firmware that has two images, there is only one image of boot supported. Upgrading the boot image replaces the original boot image.

External components

This section describes the rear panel of the switch.

Rear panel

Item

Description

Description

 

 

 

1

Reset button

Forces the switch to power up or

 

 

reboot

 

 

 

 

2

Health LED

•

Off—Not powered up

 

 

• Green—Powered up and all

 

 

 

ports match

 

 

•

Amber—Indicates a problem

 

 

 

such as a port mismatch. For

 

 

 

more information, see the HP

 

 

 

BladeSystem enclosure setup and

 

 

 

installation guide.

 

 

 

 

3

UID LED

 

 

 

 

 

 

Introduction 14