Installation and Reference Guide HP AdvanceStack 100Base-THub-12TX, Hub-12TXM, and Switch Modules 1997-06

HP Hub-12TX/Hub-12TXM Installation and Reference Guide
2-4 Installing the System
Connecting the Hub System
Remember to label all your
connections at both ends of the
cable to facilitate troubleshooting
or future changes to network
configuration.
The AdvanceStack Hub-12TX/Hub-12TXM has 12 RJ-45
shielded ports (i.e., 100Base-TX) that support connections to
100 Mbit/s Fast Ethernet. Ports 1 - 12 (MDI-X) allow you to
connect to devices such as a workstation, server, switch, or
router. While Port 12 (MDI) lets you easily cascade to a
compatible switch (i.e., connecting from MDI to MDI-X ports
on either device).
This hub also provides an Expansion Slot for plugging in
optional Switch Port Modules. These modules support a single
connection to 100Base-TX (or 10Base-T) or 100Base-FX.
They provide a convenient way to attach to devices which use
an alternate media type (e.g., linking fiber optic cable to a
remote device).
The transmission speed for 100Base-TX ports on the optional
Switch Port Modules is automatically set at 10 or 100 Mbit/s to
match the operating speed of the attached device. Moreover, the
transmission mode of the 100Base-TX and 100Base-FX ports on
the optional modules is set at full or half duplex to match the
optimum capability of the attached device.
Note: Auto-negotiation sets the transmission mode automatically on the
10/100TX Switch Port Module, but not on the 100Base-FX module. You
need to manually set the transmission mode in the 100Base-FX module
using the VT-100 console interface.
Making a Connection via an MDI-X Hub Port
You can connect an RJ-45 station port on the hub to any device
that uses a standard 100Base-TX (802.3u), RJ-45 compliant
network interface, such as a workstation or server, or also to a
router (depending on the port type implemented).
1. Prepare the network devices you wish to network. Make
sure you have installed suitable 100Base-TX LAN adapters
in the end nodes before making a connection to any of the
hub’s ports. You also need to prepare straight-through