Chapter 3 Assigning The Switch Ip Address And Default Gateway; Understanding The Boot Process - Cisco 3845 - Security Bundle Router Software Manual

Assigning the Switch IP Address and Default
Gateway
This chapter describes how to create the initial switch configuration (for example, assigning the
switch IP address and default gateway information) for the Cisco Metro Ethernet (ME) 3800X and
3600X switch by using a variety of automatic and manual methods. It also describes how to modify the
switch startup configuration.
Note For complete syntax and usage information for the commands used in this chapter, see the command
reference for this release and to the Cisco IOS Software Documentation, 12.2 Mainline Release,
Command References, Volume 1 of 3: Addressing and Services.
This chapter consists of these sections:
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Note Information in this chapter about configuring IP addresses and DHCP is specific to IP Version 4 (IPv4).

Understanding the Boot Process

To start your switch, you need to follow the procedures in the hardware installation guide about installing
and powering on the switch and setting up the initial configuration (IP address, subnet mask, default
gateway, secret and Telnet passwords, and so forth) of the switch.
The normal boot process involves the operation of the boot loader software, which performs these
functions:
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OL-23400-01
Understanding the Boot Process, page 3-1
Assigning Switch Information, page 3-3
Checking and Saving the Running Configuration, page 3-16
Modifying the Startup Configuration, page 3-17
Scheduling a Reload of the Software Image, page 3-21
Performs low-level CPU initialization. It initializes the CPU registers, which control where physical
memory is mapped, its quantity, its speed, and so forth.
Performs power-on self-test (POST) for the CPU subsystem. It tests the CPU DRAM and the portion
of the flash device that makes up the flash file system.
C H A P T E R
Cisco ME 3800X and 3600X Switch Software Configuration Guide
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