3com MSR 20 Manual Do Utilizador

Figure 69   Ethernet cable

For the pinouts of Ethernet cables, see Low-End and Mid-Range Series Routers 
Cable Manual.

To connect a PC or another router, use a crossover cable; to connect a LAN Switch 
or HUB, use a straight-through cable.

Step 1: Connect one end of the cable to the Ethernet port and the other end to 
the peer device;

Step 2: Check the status of LINK LED on the 1GBE panel: ON means the link is 
connected and OFF means the link is not connected. In the latter case, check the 
line.

MIM-1GEF/MIM-2GEF is short for 1/2-port 1000Base-SX/1000Base-LX GE fiber 
interface module, where GE is short for Gigabit Ethernet and F for fiber, indicating 
optical fiber interface. MIM-1GEF/MIM-2GEF is used for the communication 
between router and LAN.

MIM-1GEF/MIM-2GEF supports:

■

Five types of 1000Base-LX/1000Base-SX SFP removable modules: multi-mode 
short-haul (850 nm), single mode medium-haul (1310 nm), single mode 
long-haul (1310 nm), single mode long-haul (1550 nm), and single mode 
ultra-long haul (1550 nm)

■

1000 Mbps interface rate

■

Full duplex

The interface attributes of MIM-1GEF/MIM-2GEF are given in the following table:

Table 41   Interface attributes of MIM-1GEF/MIM-2GEF

Number of 
interfaces

1

2 

Connector

SFP/LC 

Interface 
standard

802.3, 802.3u, 802.3ab