Cisco 3700 Series Interface Numbering; Cisco 3725 Router Slot Numbering - Cisco 2620 Configuration Manual

Chapter 1 Understanding Interface Numbering and Cisco IOS Software Basics
If you have a 4-channel voice network module installed in slot 1 of your router, the voice interfaces will
be:
•
•
•
•
Figure 1-9

Cisco 3700 Series Interface Numbering

Each WAN and LAN interface on a Cisco 3700 series router is identified by a slot number and a unit
number. The Cisco 3700 series includes the Cisco 3725 and Cisco 3745.
Cisco 3725 Router Interface Numbering
The Cisco 3725 router chassis contains the following wide-area network (WAN) and local area network
(LAN) interface types:
•
•
•
•

Cisco 3725 Router Slot Numbering

The numbering format is Interface-type Slot-number/Interface-number. Two examples are:
FastEthernet 0/0
Serial 1/2.
The slot numbers are as follows:
•
•
OL-1957-04
Slot 1, voice network module slot 0, voice interface 0, referred to as voice 1/0/0 (closest to chassis
slot 0)
Slot 1, voice network module slot 0, voice interface 1, referred to as voice 1/0/1
Slot 1, voice network module slot 1, voice interface 0, referred to as voice 1/1/0
Slot 1, voice network module slot 1, voice interface 1, referred to as voice 1/1/1 (farthest from
chassis slot 0)
Cisco 3600 Series Unit Numbers
Two built-in FastEthernet LAN interfaces
Three slots in which you can install WAN interface cards (WICs)
One single-width slot (slot 1) in which you can install one network module
One double-width slot (slot 2) in which you can install one single-width or double-width network
module
0 for all built-in interfaces
0 for all WIC interfaces
Software Configuration Guide For Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
Understanding Interface Numbering
1-9