Cisco Systems UBR7100E manual Connecting the Fast Ethernet Ports

Chapter 3 Installing Cisco uBR7100 Series Universal Broadband Routers

Connecting to the Network

Connecting the Fast Ethernet Ports

The 10BASE-T/100BASE-TX Fast Ethernet ports support IEEE 802.3 and IEEE 802.3u specifications for 10-Mbps and 100-Mbps transmission over unshielded twisted-pair (UTP) cables. These ports also support autosensing and autonegotiation of the proper transmission mode (half duplex or full duplex) with an attached device.

Each Fast Ethernet port has an RJ-45 connector that supports standard straight-through and crossover Category 3 or Category 5 UTP cable:

•Use Category 3 UTP straight-through cables when connecting a 10BASE-T port to a hub.

•Use Category 3 UTP crossover cables when connecting to a PC or other Ethernet device.

•Use Category 5 UTP straight-through cables when connecting 100BASE-TX to a hub.

•Use Category 5 UTP crossover cables when connecting to a PC or other Ethernet device.

Note Cisco Systems does not supply Category 3 or Category 5 UTP RJ-45 cables; these cables are available commercially. For more information, see the “Fast Ethernet Port Cables and Pinouts” section on page C-4.

To connect the Fast Ethernet port to an Ethernet hub, use the following procedure:

Step 1 Verify that the Ethernet hub is properly connected to the rest of the LAN.

Step 2 Attach the appropriate cable directly to the receptacle on the router. (See Figure 3-10.) Step 3 Attach the network end of the cable to the Ethernet hub or end station. (See Figure 3-10.)

Figure 3-10 Connecting the LAN Port to an Ethernet Hub

5	SLOT 0	SLOT 1
	ACT

PWR

I	DS0			FE 0/0	FE 0/1
	RF	DS0	US3					SYS
					US1	CONS	AUX	RDY
						US0
						EN
						uBR7114

10BASE-T/100BASE-TX ports

Fast Ethernet 0/0

(RJ-45)

35826

Cisco uBR7100 series router

Ethernet hub

8	7	6	5	4
					3	2	1

Straight-through

Ethernet cable

Cisco uBR7100 Series and Cisco uBR7100E Series Universal Broadband Router Hardware Installation Guide

OL-5916-01 3-9