Installation guide

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Cisco Interface Cards Installation Guide
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Chapter 1 Overview of Cisco Interface Cards
Cisco 3700 Series Routers
Figure 1-2 Rear Panel of the Cisco 3725 Router
Cisco 3700 Series Interface Numbering
Each network interface on a Cisco 3700 series router is identified by a slot number
and a port number.
Slot Numbering
A Cisco 3725 router includes two slots in which you can install network modules.
The upper slot can accommodate either a single-width or double-width network
module. The slot numbers are as follows:
• 1 for interfaces in the lower network module slot
• 2 for interfaces in the upper network module slot
1 Double-width network module slot 6 Compact Flash slot
2 Interface card slots 7 Fast Ethernet 0/0
3 Power supply 8 Fast Ethernet 0/1
4 Auxiliary port 9 Single-width network module slot
5 Console port
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