Cisco 2620 Configuration Manual page 31

Chapter 1 Understanding Interface Numbering and Cisco IOS Software Basics
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Cisco 3745 Router Slot Numbering
The numbering format in the Cisco 3745 router is Interface type Slot number/Interface number. Two
examples are:
The slot numbers are as follows:
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If double-wide network modules are installed, the slot numbers are as follows:
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Interface (port) numbers begin at 0 for each interface type, and continue from right to left and (if
necessary) from bottom to top.
Figure 1-11
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OL-1957-04
3 slots in which you can install WAN or voice interface cards
4 network module slots.
FastEthernet 0/0
Serial 1/2.
0 for all built-in interfaces
0 for all WIC interfaces
1 for the lower right network module slot
2 for the lower left network module slot
3 for the upper right network module slot
4 for the upper left network module slot
2 for the lower double-wide slot
4 for the upper double-wide slot
shows the rear panel of the Cisco 3745 with:
A WIC in each of the three WAN interface card slots
A single-width network module in each of the four network module slots
Two AC power supplies
Software Configuration Guide For Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
Understanding Interface Numbering
1-11