Aggregate and Redundant Interfaces

Read about and configure aggregate and redundant Ethernet interfaces in this topic.

By default ETH0 and ETH1 act as two individual Ethernet interfaces. When both interfaces are connected to the network and are in backhaul mode, the AP transmits broadcast traffic only through ETH0. The AP transmits broadcast traffic through ETH1 only when ETH0 does not have network connectivity. When both Ethernet interfaces are connected to the network and are in access mode, then the AP transmits broadcast traffic through all the access interfaces: ETH0, ETH1, and all wireless subinterfaces in access mode.

In addition to using ETH0 and ETH1 as individual interfaces, you can combine them into an aggregate interface (agg0) to increase throughput, or combine them into a redundant interface (red0) to increase reliability. The logical red0 and agg0 interfaces support all the settings that you can configure for Ethernet interfaces except those pertaining to physical link characteristics such as link speed. See the sections below for configuration information.

  • For many AP models, when you use 802.3af PoE on ETH0, ETH 1 is automatically turned off, which prevents you from aggregating ETH0 and ETH1.

 


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