Thursday, April 27, 2017


The IEEE 802.3ad standard supports

Link Aggregation Control Protocol (LACP). Unlike some of the older vendor-proprietary solutions, LACP supports automatic configuration and prevents an individual link from becoming a single point of failure. Specifically, with LACP, if a link fails, that link’s traffic is forwarded over a different link.

You can configure port channels on a Nexus switch statically, or dynamically via the Link
Aggregation Control Protocol (LACP), which can bundle multiple links into a single port channel as
well as help to detect link failures. LACP is a non-proprietary IEEE 802.1AX port channel
negotiation standard. After enabling it globally on the device, you can then enable LACP for each
channel by setting the channel mode for each interface to either active or passive. When a port is
configured for passive mode, it will respond to the LACP packets it receives, but it won’t initiate an
LACP negotiation. When a port is configured for active mode, the port initiates negotiations with
other ports by sending LACP packets.

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