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Catalyst 3550 Multilayer Switch Command Reference
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Using the Command-Line Interface
The Catalyst 3550 multilayer switches are supported by Cisco IOS software. This chapter describes how
to use the switch command-line interface (CLI) to configure software features.
For a complete description of the commands that support these features, see Chapter 2, “Catalyst 3550
Switch Cisco IOS Commands.” For information on the boot loader commands, see Appendix A,
“Catalyst 3550 Switch Boot Loader Commands.” For information on the debug commands, see the
Appendix B, “Catalyst 3550 Switch Debug Commands.” For more information on Cisco IOS
Release 12.2, see the Cisco IOS Release 12.2 Command Summary.
For task-oriented configuration steps, see the software configuration guide for this release. For
information on accessing the CLI through the switch console port or through a Telnet session, see the
hardware installation guide or the getting started guide.
In this document, IP refers to IP version 4 (IPv4). Layer 3 IP version 6 (IPv6) packets are treated as
non-IP packets.
Type of Memory
The switch flash memory stores the Cisco IOS software image, the startup configuration file, and helper
files.
Platforms
This IOS release runs on a variety of switches and modules. For a complete list, see the release notes for
this switch.
CLI Command Modes
This section describes the CLI command mode structure. Command modes support specific Cisco IOS
commands. For example, the interface interface-id command only works when entered in global
configuration mode.
These are the main command modes for the switch:
• User EXEC
• Privileged EXEC
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