3Com 3CR990-TX-97 manual Remote System Alerts, Hot Plug NIC Installation, Dhcp Server Prevention

24CHAPTER 1: INTRODUCTION

The 3Com DMI Agent consists of a DMI browser with the following components:

■DMI service layer

■DMI agent

■GUI installer

■NDIS drivers

DHCP Server Prevention

This feature prevents the PC from acting like a DHCP server. All receive packets are passed through a DHCP filter and are discarded if they are deemed to be destined for the DHCP process.

Remote System Alerts

The NIC can be configured to continuously transmit a packet to an alert target management station. If the management station fails to receive the regularly scheduled packet, an alert can be triggered that signals a possible computer power loss or theft.

The NIC can also transmit a workgroup keep-alive packet periodically while the computer is in a sleep state. This packet prevents the computer’s workstation address from being aged-out of switch router tables.

Only system administrators should configure these features.

Hot Plug NIC Installation

If your computer supports PCI hot plug specifications, you can add a new 3Com NIC or remove and replace a 3Com NIC without turning off power to the computer. Hot plug NIC installation allows you to expand connections without taking the computer out of service. It makes troubleshooting faster and easier because you do not need to wait for the computer to reboot.

For instructions on performing a hot plug NIC installation, refer to your computer documentation.