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37-2
Catalyst 2960 and 2960-S Switch Software Configuration Guide
OL-8603-09
Chapter 37 Configuring EtherChannels and Link-State Tracking
Understanding EtherChannels
Understanding EtherChannels
• EtherChannel Overview, page 37-2
• Port-Channel Interfaces, page 37-4
• Port Aggregation Protocol, page 37-5
• Link Aggregation Control Protocol, page 37-7
• EtherChannel On Mode, page 37-8
• Load Balancing and Forwarding Methods, page 37-8
• EtherChannel and Switch Stacks, page 37-10
EtherChannel Overview
An EtherChannel consists of individual Fast Ethernet or Gigabit Ethernet links bundled into a single
logical link as shown in Figure 37-1.
Figure 37-1 Typical EtherChannel Configuration
101237
Catalyst 8500
series switch
Gigabit EtherChannel
Workstations
10/100
Switched
links
Workstations
10/100
Switched
links
1000BASE-X 1000BASE-X