
What Is In This Guide
This guide contains information to help you install, configure, and troubleshoot your
HP 28684B EtherTwist Hub/12, HP 28688B EtherTwist Hub Plus, and HP 28699A
EtherTwist Hub Plus/48. The guide is organized as follows:
Chapter 1 provides a brief introduction to the hubs. It describes important product
features, what you should have received with your hub, and an overview of how the hub
works.
Chapter 2 provides hub installation instructions. It describes, in detail, the steps that
you should follow to install the hubs.
Chapter 3 describes all the hubs’ console interface commands.
Chapter 4 contains troubleshooting information. If you experience problems with the
hubs, you should refer to this chapter.
Appendix A provides information on the cables and connectors that you should use to
connect the hubs to the other devices in your network.
Appendix B contains the technical specifications for the hubs.
Appendix C describes how to configure commonly found modems for use with the hubs’
console connection.
Appendix D is applicable only for the HP 28688B and HP 28699A and provides
information on network addressing for those using SNMP network management stations
to manage the hubs over IP and IPX networks.
Appendix E is applicable only for the HP 28688B and HP 28699A and provides
information on establishing a backup connection for a critical link to another hub in your
network topology.
Safety Information contains safety information about the hubs. You should read and
understand this information before you use the product.
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