Chapter 12 Configuring EtherChannels
Configuring EtherChannels
Serious traffic problems can result if an EtherChannel forms from ports that pass data through the switch in significantly different ways. For example, ports on modules with and without DFCs, or when enabled with the no mls qos
Configuring EtherChannels
These sections describe how to configure EtherChannels:
•Configuring Port Channel Logical Interfaces for Layer 3 EtherChannels, page
•Configuring Channel Groups, page
•Configuring EtherChannel Load Balancing, page
•Configuring the EtherChannel
Note Make sure that the LAN ports are configured correctly (see the “EtherChannel Feature Configuration Guidelines and Restrictions” section on page
Configuring Port Channel Logical Interfaces for Layer 3 EtherChannels
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| Note | • When configuring Layer 2 EtherChannels, you cannot put Layer 2 LAN ports into manually created | ||||
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| port channel logical interfaces. If you are configuring a Layer 2 EtherChannel, do not perform the | ||||
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| procedures in this section (see the “Configuring Channel Groups” section on page | ||||
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| • When configuring Layer 3 EtherChannels, you must manually create the port channel logical | ||||
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| interface as described in this section, and then put the Layer 3 LAN ports into the channel group (see | ||||
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| the “Configuring Channel Groups” section on page | ||||
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| • To move an IP address from a Layer 3 LAN port to an EtherChannel, you must delete the IP address | ||||
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| from the Layer 3 LAN port before configuring it on the port channel logical interface. | ||||
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| To create a port channel interface for a Layer 3 EtherChannel, perform this task: | ||||
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| Step 1 |
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| Router(config)# interface | Creates the port channel interface. | |||||
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| group_number |
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| Router(config)# no interface | Deletes the port channel interface. | ||||
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| group_number |
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| Step 2 |
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| Assigns an IP address and subnet mask to the | ||||||
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| EtherChannel. | |||
| Step 3 |
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| Exits configuration mode. | ||||||
| Step 4 |
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| Router# show | Verifies the configuration. | |||||
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| Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX |
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