Fast EtherHub 3500 System User’s Guide
Product Overview 1-7
Firmware update supported for the Fast EtherHub-12mi
models via out-of-band Xmodem file transfer through the
serial port, or in-band TFTP file transfer over the network
Networking Flexibility
(via SmartExtender Modules)
One slot supports optional slide-in network extender
modules for connection to 10BASE-T, 100BASE-TX,
100BASE-T4 or 100BASE-FX (on a separate segment)
Transparent bridging (between stack and external device) via
optional network extender modules
Uses adaptive cut-through switching (which dynamically
changes be t w e e n f r a g ment free cut -through and store-and-
forward depending on the CRC error rate)
100BASE-TX SmartExtender module automatically senses
transmission speed (at 100 Mbps or 10 Mbps)
100BASE-TX and 100BASE-FX SmartExtender modules
support two interface modes: full duplex or half duplex —
auto-negotiates transmission mode for full duplex and half
duplex (if same feature is supported by attached device);
otherwise can be manually configured
Automatically learns MAC addresses to build the routing
information database
Automatically filters local traffic
Transparent to all higher level protocols
Easy Installation
Flexible installation for desktop or rack (standard 19” size)
Plug-and-play
Self-diagnostics
Automatic polarity detection and correction permits
automatic recovery due to wiring errors
Automatic ID assignment and auto-terminator setting for
auto-configuration