3com 10002211 Manuel D’Utilisation

To verify that you have an LMM+ module and not an LMM module installed:

1 Verify that the module’s ejector tab is labeled “LMM+”. 

2 Determine the revision level of your LMM+. From the top level of the 

Administration Console, enter:

To upgrade your LMM or LMM+, see 

You can combine the Fast Ethernet Switching Module (FESM) and the FDDI 
Switching Module (FSM) into a multiboard high-speed interconnect (HSI) 
switch engine.

An HSI switch engine is a combined set of FSMs, FESMs, or both, which, 
when inserted into the HSI bus according to specific configuration rules, 
operates as a single switch. Multiple FSMs and FESMs in a single HSI switch 
engine form a bridge out of the combined set of external ports on all 
modules in that switch engine. As a new module is added to an existing HSI 
switch engine, configuration information for the existing HSI switch engine 
is added to the new module. You must manually configure any port-specific 
information.

New menus on the Administer menu allow you to administer Fast Ethernet 
ports on the Fast Ethernet Switching Module (FESM) and the Tri-Media Fast 
Ethernet Module (TMM-FE). You can now configure Fast Ethernet ports to 
support:

■

Full-duplex operation

■

Intelligent flow management (IFM)

Full-duplex operation.  By default, FESM and TMM Fast Ethernet ports 
operate in half-duplex mode. In this mode, data flows through the port in 
only one direction at a time. 

When you change this operating mode to 

full-duplex, the port transmits and receives data at the same time 
through two separate channels.