H3C MSR-20-21 ROUTER Installation Manual page 31

Table 3-4 Attributes of the Ethernet interface
Attribute
Connector
Interface
Frame format
Operating mode
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 3-7 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 standard 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 devices, such as PC to PC or PC to router.
You can make crossover cables yourself as needed.
In making network cables, shielded cables are preferred for electromagnetic compatibility sake.
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.
RJ-45
MDI/MDIX auto-sensing
Ethernet_II
Ethernet_SNAP
10/100 Mbps auto-sensing
Full duplex/half duplex
3-7
Description