About This Guide
This preface discusses the objectives, audience, organization, and conventions of this
network module hardware installation guide.
This publication provides hardware installation information for Cisco network modules
used in Cisco 3600 series and Cisco 2600 series modular access routers, referred to as
Cisco modular routers.
This publication describes a variety of router models that are similar in functionality, but
differ in the number of interfaces supported. Some information provided might not apply
to your particular router model.
How to Use This Guide
This guide contains an overview of network modules and information on connecting
speciﬁc network modules to your Cisco modular router. Refer to Table 1-1 in Chapter 1,
"Overview of Cisco Network Modules" for a listing of network modules supported by
Cisco 3600 series routers and the required release of Cisco IOS software for each module.
Refer to Table 1-2 in Chapter 1, "Overview of Cisco Network Modules" for a listing of
network modules supported by Cisco 2600 series routers and the required release of
Cisco IOS software for each module.
If required, see Chapter 3, "Installing Network Modules in Cisco Modular Routers" for
instructions on installing a network module in your router.
About This Guide ix