Installation guide

Chapter 1 Overview of Cisco Interface Cards
Cisco 3600 Series Routers
1-10
Cisco Interface Cards Installation Guide
OL-1919-12
Figure 1-6 Cisco 3620 Router Rear View
Cisco 3600 Series Interface Numbering
Each individual network interface on a Cisco 3600 series router is identified by a
slot number and a unit number.
Slot Numbering
The Cisco 3600 series router chassis contains two, four, or six slots in which you
can install modules. You can install any module into any available slot in the
chassis.
For the Cisco 3660 router (see Figure 1-4), the slots are numbered as follows:
• 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.
ETHERNET 1
ETHERNET 0
2E
2W
W1
W0
ACT
ACT
LINK
AUI
EN
LINK
SEE MANUAL BEFORE INSTALLATION
B1
B2
ACT
BRI
NT1
ACT
SERIAL
ETHERNET 1
ETHERNET 0
2E
2W
W1
W0
ACT
ACT
LINK
AUI
EN
LINK
ACT
SERIAL
41183
Slot 0
Slot 1
DO NOT INSTALL WAN INTERFACE
CARDS WITH POWER APPLIED