H3C S5120-EI Series, Руководство по эксплуатации

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Ethernet Link Aggregation Configuration
When configuring Ethernet link aggregation, go to these sections for information you are interested in:
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Overview
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Ethernet Link Aggregation Configuration Task List
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Configuring an Aggregation Group
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Configuring an Aggregate Interface
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Configuring Load Sharing for Link Aggregation Groups
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Displaying and Maintaining Ethernet Link Aggregation
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Ethernet Link Aggregation Configuration Examples
The extended LACP functions is added. For the detailed introduction, refer to LACP functions.
Overview
Ethernet link aggregation, most often simply called link aggregation, aggregates multiple physical
Ethernet links into one logical link to increase link bandwidth beyond the limits of any one single link.
This logical link is called an aggregate link. It allows for link redundancy because the member physical
links can dynamically back up one another.
As shown in
Figure 1-1 , Device A and Device B are connected with three physical Ethernet links. These
physical Ethernet links are aggregated into an aggregate link, Link aggregation 1. The bandwidth of this
aggregate link can be as high as the total bandwidth of these three physical Ethernet links.
Figure 1-1
Diagram for Ethernet link aggregation
Basic Concepts
Aggregation group, member port, aggregate interface
Link aggregation is implemented through link aggregation groups. An aggregation group is a group of
Ethernet interfaces aggregated together. For each aggregation group, a logical interface, called an
aggregate interface is created. To an upper layer entity that uses the link aggregation service, a link
aggregation group looks like a single logical link and data traffic is transmitted through the aggregate
interface.
There are two types of aggregate interfaces: bridge-aggregation (BAGG) interfaces, which are Layer 2
aggregate interfaces, and route-aggregation (RAGG) interfaces, which are Layer 3 aggregate