Accton Technology 12mi SNMP, 12i manual Maximum Cable Length

Fast EtherHub 3500 System User’s Guide

∙Verify that you have not exceeded the specified limits for any attached media type as summarized in the following table:

Media Type

Twisted Pair

Fiber Opitc

Maximum Length (meters)

100

412 (at half duplex)

2000 (at full duplex)

Table 2.5 Maximum Cable Length

∙If a computer is attached to the hub, verify that its adapter card is functioning properly by trying it in another computer that has been successfully connected to the network.

∙When using the 100BASE-TX or 100BASE-FX SmartExtender Module, both sides of each connection must use the same transmission mode (i.e., full or half duplex). If the device connected to the hub operates at full duplex but does not support auto-negotiation, then you must manually set the transmission mode with the configure button. (Refer to section on Communication Mode earlier in this chapter.)

If you still can’t resolve the problem, please refer to Troubleshooting in Appendix A.

2-16 Installing the System