Cisco 3600 Series Owner's Manual - Page 9

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Cisco 3600 Series Owner's Manual
Chapter 1
Overview of Cisco 3600 Series Routers

Voice Interface Numbering

Voice interfaces are numbered as follows:
interface-type chassis-slot/voice-module-slot/voice-interface
For example, Slot 1, voice network module slot 0, is referred to as voice 1/0/0 (closest to chassis slot 0).

Cisco 3631 Interfaces

Each individual interface (port) on a Cisco 3631 router is identified by number as described in the
following sections.

WAN and LAN Interface Numbering

The Cisco 3631 router chassis contains the following WAN and LAN interface types:
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The numbering format is Interface-type Slot-number/Interface-number. Two examples are:
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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 1-8
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OL-2056-05
One built-in FastEthernet LAN interface
Two slots in which you can install WAN interface cards (WICs)
Two single-width slots (slot 1 and slot 2) in which you can install single-width network modules
FastEthernet 0/0
Serial 1/2
0 for all built-in interfaces
0 for all WIC interfaces
1 for interfaces in the lower network module slot
2 for interfaces in the upper network module slot
shows an example of interface numbering on a Cisco 3631 router with:
A WIC in each WIC slot (containing interfaces serial 0/0 and serial 0/1 in physical slot W0, and
interface serial 0/2 in physical slot W1)
A 32-port asynchronous network module in slot 1 (containing interfaces serial 1/0 through serial
1/31)
An alarm interface controller network module in slot 2 (internally connected to interface serial 2/0)
One built-in Ethernet 10/100 interface—FastEthernet 0/0
Cisco 3600 Series Routers Hardware Installation Guide
Interface Numbering
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