Configuring EtherChannels Restrictions for EtherChannels, on page 1 Information About EtherChannels, on page 1 How to Configure EtherChannels, on page 13 Monitoring EtherChannel, Port Aggregation Protocol, and Link Aggregation Control Protocol Status, on page 30 Configuration Examples for EtherChannels, on page 31 Additional References for EtherChannels, on page 34 Feature History for EtherChannels, on page 34 Restrictions for EtherChannels The following are restrictions for EtherChannels: • All ports in an EtherChannel must be assigned to the same VLAN or they must be configured as trunk port. • The LACP 1:1 redundancy feature is supported on port channel interfaces only.
• On EtherChannel member port selection is software based in Layer 2 and Layer 3 multicast route. This means that all multicast traffic under a group will be routed via the same physical port of the EtherChannel. As a result, the distribution of multicast traffic load balance over etherchannels might not evenly spread across member ports. Information About EtherChannels The following sections provide information about EtherChannels and the various modes to configure EtherChannels. EtherChannel Overview EtherChannel provides fault-tolerant high-speed links between switches, routers, and servers.
You can use the EtherChannel to increase the bandwidth between the wiring closets and the data center, and you can deploy it anywhere in the network where bottlenecks are likely to occur. EtherChannel provides automatic recovery Configuring EtherChannels 1