Chapter 4: Installation

4.4.2Stacking Unmanaged SEH Hubs Together

Use the following procedure to stack non-intelligent hubs (SEHs) together.

NOTE

The SEH has a universal power supply that allows connection to power sources from 100 Vac to 125 Vac @ 4.0 A or 200 Vac to 250 Vac @ 2.0 A, 50/60 Hz.

1.Power up each SEH in the stack by plugging the power cord into the back panel of the SEH and plugging the other end into a grounded receptacle.

2.Verify that the PWR LED for each hub is on, indicating that each SEH is receiving power.

3.Attach the interconnect cable to the “IN” port on the rear panel of the second SEH in the stack as shown in Figure 4-5.

4.Attach the other end of the interconnect cable to the “OUT” port on the rear panel of the first SEH in the stack.

Do not leave an interconnect cable connected at only one end

!during network operation. Corrupted data may result.

CAUTION

5. Continue connecting ports in this manner until all hubs are connected.

4.5INSTALLING AN EPIM

This section contains procedures on how to replace an EPIM-100TX, EPIM-100FX, or EPIM-100FMB to upgrade or change the capabilities of your SEH100TX-22. After installing a new EPIM, refer to the appropriate EPIM section in Appendix A to verify proper operation.

!

Observe all static precautions while handling an EPIM.

CAUTION

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SEH100TX User’s Guide

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Cabletron Systems SEH100TX-22 manual Stacking Unmanaged SEH Hubs Together, Installing AN Epim