Port numbering, Slot 2 is at the bottom left, Slot 3 is at the right, above slot 1 – Cisco 3600 User Manual
Page 16: Slot 4 is at the left, above slot 2, Slot 5 is at the right, above slot 3, Slot 6 is at the left, above slot 4

Overview of Cisco Network Modules
Cisco 3600 Series Routers
1-16
Cisco Network Module Hardware Installation Guide
DOC-NTWRKMOD-HIG=
The Cisco 3660 router, shown in Figure 1-4, uses a different numbering system:
•
Slot 0 contains fixed Fast Ethernet ports and is located at the top of the
chassis.
•
Slot 1 is at the bottom right (as viewed from the rear of the chassis), near the
power supply.
•
Slot 2 is at the bottom left.
•
Slot 3 is at the right, above slot 1.
•
Slot 4 is at the left, above slot 2.
•
Slot 5 is at the right, above slot 3.
•
Slot 6 is at the left, above slot 4.
Port Numbering
Port numbers begin at 0 for each slot, and continue from right to left and (if
necessary) from bottom to top. Modules and WAN interface cards are identified
by interface type, slot number, a forward slash (/), and the port number, for
example Ethernet 0/0.
Figure 1-6 shows a router with 2-Ethernot 2-slot modules in slots 0 and 1. Two
serial WAN interface cards are installed in the module in slot 0. One serial and
one ISDN BRI WAN interface card are installed in the module in slot 1.
Figure 1-6
Cisco 3600 Series Port Numbers
Power supply
BRI 1/0
Ethernet 1/0
Ethernet 0/1
Ethernet 0/0
Ethernet 1/1
H8604
INPUT 100-240VAC 50/60HZ 3.0-1.5 AMPS
2E
2W
W1
ETHERNET 1
ETHERNET 0
EN
AUI
WO
ACT
LNK
ACT
LNK
AC
T
SERIAL
BRI
NT1
B1
B2
NT1
2
3
1
2E
2W
W1
STP
ETHERNET 0
AUI
EN
ACT
LNK
ACT
LNK
AC
T
SERIAL
AC
T
SEE MANUAL BEFORE INSTALLATION
ETHERNET 1
Serial 1/0
Serial 0/1
Serial 0/0