Cisco CISCO2650 - 2650 Router Hardware Installation Manual page 79

Chapter 3 Connecting Ethernet, Fast Ethernet, and Token Ring Network Modules
Figure 3-5
1E
1R W1
Ethernet Connectors
The 1-port Ethernet network module, the 1-Ethernet 2-slot network module, and the 1-Ethernet 1-Token
Ring 2-slot network module each provide a single Ethernet port. This port uses either the attachment unit
interface (AUI) DB-15 connector on the right side of the module or the 10BASE-T (RJ-45) connector
next to it. Only one of these connectors can be active at a time. The active port is identified in software
by port type (Ethernet), slot number on the module, and port number 0.
All modules detect the type of network connection automatically, and you do not need to choose the
media type in software. If cables are plugged into both ports, the 10BASE-T connection is chosen.
The 4-port Ethernet network module has ports for four Ethernet connections (0, 1, 2, and 3). Port 0 offers
a choice of an AUI or 10BASE-T interface. Ethernet ports 1, 2, and 3 use 10BASE-T connectors only.
These ports do not provide an AUI connector.
The 2-Ethernet 2-slot network module has ports for two Ethernet connections. Port 0 offers a choice of
AUI or 10BASE-T. Port 1 uses 10BASE-T only.
Connecting Ethernet Ports
If an Ethernet port offers both an AUI connector and a 10BASE-T connector, you can use either
connector, but not both at the same time.
AUI Connections
Use an Ethernet AUI cable to connect an AUI port to an Ethernet transceiver. These ports are
color-coded yellow. The female end of the AUI cable mates with the slide-latch connector of the
transceiver cable.
of Ethernet transceiver.
If the transceiver cable has thumbscrew connectors, you can connect it directly to the AUI port by
replacing the AUI port slide latch with a jackscrew (provided in a separate bag).
OL-2485-20
1-Ethernet 1-Token Ring 2-WAN Card Slot Network Module
Token Ring
interface LEDs
STP
TOKEN RING 0
STP port UTP port
Figure 3-6 shows a thin Ethernet transceiver as an example, but you can use any type
10BASE-T
AUI port
port
ETHERNET 0
Ethernet
LEDs
Cisco Network Modules Hardware Installation Guide
Ethernet Network Modules
WO
AUI
EN
3-3