Cisco Systems 3825 manual First-Time Configuration, Understanding Boot Images

C H A P T E R 3

First-Time Configuration

This chapter contains information with which you should be familiar before you begin to configure your router for the first time, including information about understanding boot images, interface numbering, and what you should do before you turn on your router. This chapter also describes how to use the setup command facility to configure your Cisco 3825 Mobile Wireless Edge Router.

This chapter includes the following sections:

•Setup Command Facility, page 3-3

•Configuring Global Parameters, page 3-4

•Completing the Configuration, page 3-7

Understanding Boot Images

The first file on the compact flash device in slot0: must be the Cisco IOS software image that you want to use. If it is not, the Cisco 3825 router will not be able to boot.

Understanding the Cisco 3825 Router Interface Numbering

Each network interface on a Cisco 3825 router is identified by a slot number, subslot number, and a port number.

Figure 3-1 on page 3-2shows an example of interface numbering on a Cisco 3825 router:

•A Cisco 2-port T1/E1-RAN interface card in each of the four Cisco 2-port T1/E1-RAN slots (labeled HWIC0, HWIC1, HWIC2, and HWIC3) [high-speed WIC]

•Two built-in Gigabit Ethernet (GE) interfaces (labeled GE 0/0 and GE 0/1)

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

OL-15667-03 3-1