Chapter 1 Understanding Interface Numbering And Cisco Ios Software Basics; Understanding Interface Numbering; Cisco 2600 Series Interface Numbering - Cisco 2611XM Software Configuration Manual

Understanding Interface Numbering and
Cisco IOS Software Basics
This chapter provides an overview of the interface numbering in the Cisco 2600 series, Cisco 3600
series, and Cisco 3700 series routers. It also describes how to use the Cisco IOS software commands.

Understanding Interface Numbering

This section contains information with which you should be familiar before you begin to configure your
router for the first time, including interface numbering and what you should do before starting your
router.

Cisco 2600 Series Interface Numbering

Each network interface on a Cisco 2600 series router is identified by a slot number and a unit number.
Table 1-1
available in the Cisco 2600 series routers.
Table 1-1
Model
Cisco 2610
Cisco 2610XM
Cisco 2611
Cisco 2611XM
Cisco 2612
Cisco 2613
Cisco 2620
Cisco 2620XM
Cisco 2621
Cisco 2621XM
Cisco 2650
OL-1957-03
lists the router models and summarizes the interfaces supported on each model that are
Summary of Cisco 2600 Series Router Models and Interfaces
Ethernet Token-Ring
(10BASE-T) (RJ-45)
1
2
1 1
1
Software Configuration Guide For Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
C H A P T E R
Fast WAN
Ethernet Network Interface
(10/100) Module Slot Card Slots
1 2
1 1 2
1 2
2 1 2
1 2
1 2
1 1 2
1 1 2
2 1 2
2 1 2
1 1 2
1
Advanced
Integration
Module Slots
1
1
1
1
1
1
1
1
1
1
1
1-1