链路聚合提供协议、过程和托管对象，允许以下各项:将全双工点到点链路的一个或多个并行实例聚合在一起，形成链路聚合组（LAG），以便MAC客户端可以将滞后视为单个链路来处理。；一种弹性互连，在网络中的一到三个节点之间使用多个全双工点对点链路 网络和另一个单独管理的网络中的一到三个节点，以及确保属于任何给定服务的帧在两个网络之间的两个方向上使用相同物理路径的方法。本标准定义了独立于MAC的链路聚合能力，以及与支持链路聚合的特定MAC类型相关的一般信息。 定义的功能与本标准的早期版本兼容。

Link Aggregation provides protocols, procedures, and managed objects that allow the following: One or more parallel instances of full-duplex point-to-point links to be aggregated together to form a Link Aggregation Group (LAG), such that a MAC Client can treat the LAG as if it were a single link.; A resilient interconnect using multiple full-duplex point-to-point links among one to three nodes in a network and one to three nodes in another, separately administered, network, along with a means to ensure that frames belonging to any given service will use the same physical path in both directions between the two networks. This standard defines the MAC-independent Link Aggregation capability and general information relevant to specific MAC types that support Link Aggregation. The capabilities defined are compatible with previous versions of this standard.