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Configuring Ethernet and Fast Ethernet Switching
This chapter describes how to configure Ethernet and Fast Ethernet switching on the Catalyst enterprise
LAN switches. The configuration tasks in this chapter apply to Ethernet and Fast Ethernet switch ports
on switching modules and fixed-configuration switches, as well as to supervisor engine Fast Ethernet
uplink ports.
Note
For complete information on installing Catalyst 4000 family Fast Ethernet modules, refer to the
Catalyst 4000 Family Installation Guide.
Note
For complete syntax and usage information for the commands used in this chapter, refer to the Command
Reference—Catalyst 4000 Family, Catalyst 2948G, and Catalyst 2980G Switches.
This chapter consists of these sections:
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•
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Understanding How Ethernet Works
These sections describe how Ethernet switching works on the Catalyst enterprise LAN switches:
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•
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Ethernet Overview
The Catalyst enterprise LAN switches support simultaneous, parallel conversations between Ethernet
segments. Switched connections between Ethernet segments last only for the duration of the packet. New
connections can be made between different segments for the next packet.
78-12647-02
Understanding How Ethernet Works, page 4-1
Default Ethernet and Fast Ethernet Configuration, page 4-2
Configuring Ethernet and Fast Ethernet Ports, page 4-3
Ethernet Overview, page 4-1
Switching Frames Between Segments, page 4-2
Building the Address Table, page 4-2
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
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