28
C
HAPTER
3: I
NSTALLATION
Connecting the Ethernet cable
Follow the steps below to connect an Ethernet cable:
Step 1: Connect one end of the Ethernet cable to an Ethernet port on the router
and the other end to another device.
■
For a 10/100 Mbps port provided by the RPU, connect it to a PC or another
router using a crossover cable or to a Hub or LAN switch using a
straight-through cable.
Step 2: View the LINK LED of the Ethernet interface: ON means a link is present.
OFF means no link is present; check the line for the cause.
Ethernet Switching
Interface
The H3C MSR 20-21 Router is available with fixed 100Base-TX FE interface(s). The
following table describes Ethernet switching interface attributes:
n
MDI (media dependent interface is a typical type of Ethernet interface provided by
network adapters. MDIX is crossover media-dependent interface, which is
commonly found on a Hub or LAN switch.
Ethernet cable
Ethernet interfaces usually use category 5 twisted pair cables, as shown in the
following figure:
Figure 14
Ethernet cable
Ethernet cables fit into the following two categories:
■
Standard cable, also called straight-through cable, at both ends of which, wires
are crimped in the RJ-45 connectors in the same sequence. The cable connects
different categories of devices, such as a terminal device (PC for example) or
router to a Hub or LAN switch. The cable accompanying the router is
straight-through cable.
■
Crossover cable, at both ends of which, wires are crimped in the RJ-45
connectors in different sequences. The cable connects the same category of
Table 19
Attributes of the Ethernet switching interface
Attribute Description
Connector RJ-45
Interface MDI/MDIX
Frame format
Ethernet_II
Ethernet_SNAP
Operating mode
10/100 Mbps auto-sensing
Full duplex/half duplex
