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Troubleshooting Notes for the Express 100BASE-TX Stackable Hub
TROUBLESHOOTING NOTES FROM TECH SUPPORT FOR THE EXPRESS 100BASE-TX STACKABLE HUB
Troubleshooting Notes from Tech Support for the Express 100BASE-TX
Stackable Hub
Connecting to a 10 Mbps segment
The Express Stackable Hub is a 100 Mbps-only hub. You can't connect a
10 Mbps device directly to the Express Stackable Hub
The preferred way to connect the a 10 Mbps segment or device to the
Express Hub is by using the Intel Express 10/100 Downlink to connect
10 Mbps segments or devices to an Express 100BASE-TX Stackable Hub or
Switching Hub. The Express 10/100 Downlink is a 2 port switch with
each port running at 10 Mbps or 100 Mbps. Another inexpensive
alternative is to using the Express 10/100 Downlink is to connect the
segments through a server.
Several adapters on the market (such as the Intel EtherExpress PRO/100
adapter) operate at either 10 or 100 Mbps. By connecting the Express
100BASE-TX Stackable Hub to one server adapter at 100 Mbps and your
10BASE-T hub to a separate adapter at 10 Mbps in the same server, you
can route traffic from the 10 Mbps segment to the 100 Mbps segment
through your Network Operating System (NOS) like Novell NetWare or
Windows NT 3.51.
If your NOS doesn't support multi-protocol routing (Windows 95
peer-to-peer and Windows for Workgroups don't), you must use a Fast
Ethernet switch or router that supports both 10 Mbps and 100 Mbps.
Note: Window NT* 3.51 doesn't include the multi-protocol router
software by default. You can download it from the Microsoft World Wide
Web site.
Downloading the Intel MIB (Management Information Base) file
The MIB filename is HUB1MIB.EXE. You can find the file on Intel's
Customer Support web site (http://www-cs.intel.com) or the Intel BBS
(see the inside back cover of the User Guide for phone numbers).
Note: Be sure you assign an IP configuration to the switch before
using it with an SNMP-compliant network management system (NMS). See
the Quick Start section in the User Guide for more information.
See your NMS documentation for instructions on compiling the MIB for a
new device.
Troubleshooting the Express Stackable Hub
If there is an operating problem with the Express Stackable Hub,
incorrect configuration or cabling is probably the cause. Try the
troubleshooting steps below in order:
1. Verify that your cables are wired correctly. The most common
problem is a cabling problem. Review all link LED's to ensure that
those ports you believe should be functioning are properly attached to
a cable. It is important to verify that cables are wired correctly.
2. Review the Link LEDs of other devices to ensure that those ports
you believe should be functioning are properly attached to the switch
with a Category 5 UTP cable.
3. Review the Express Hub's Link LEDS to ensure that ports you
believe should be functioning are properly configured, and not
disabled or partitioned.
4. Make sure that the equipment attached to the switch is properly
configured. If the COL LED is on continuously, you may have a problem
with an adapter on that segment.
How to order Express 100BASE-TX Hub Cascade Cable
The Express 100BASE-TX Hub Cascade Cable ( EC100CC) can be ordered
directly from Intel's Pay-for-Spares order line. Customers can call
Pay-for-Spares at 503-222-5393, and order packet number NIO163.
The cost of the Cascade cable is $35.00 for each cable, plus $7.88 for
shipping and handling.
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