Chapter 1 Link Aggregation Configuration; Introduction To Link Aggregation; Introduction To Lacp - H3C S3100-52P Operation Manual

Operation Manual – Link Aggregation
H3C S3100-52P Ethernet Switch

Chapter 1 Link Aggregation Configuration

When configuring link aggregation, go to these sections for information you are
interested in:
Overview
Link Aggregation Classification
Aggregation Group Categories
Link Aggregation Configuration
Displaying and Maintaining Link Aggregation Configuration
Link Aggregation Configuration Example
1.1 Overview

1.1.1 Introduction to Link Aggregation

Link aggregation can aggregate multiple Ethernet ports together to form a logical
aggregation group. To upper layer entities, all the physical links in an aggregation group
are a single logical link.
Link aggregation is designed to increase bandwidth by implementing load sharing
among the member ports in an aggregation group. Link aggregation group also allows
for port redundancy, which improves connection reliability.

1.1.2 Introduction to LACP

Link Aggregation Control Protocol (LACP) is designed to implement dynamic link
aggregation and deaggregation. This protocol is based on IEEE802.3ad and uses link
aggregation control protocol data units (LACPDUs) to interact with its peer.
With LACP enabled on a port, LACP notifies the following information of the port to its
peer by sending LACPDUs: priority and MAC address of this system, priority, number
and operation key of the port. Upon receiving the information, the peer compares the
information with the information of other ports on the peer device to determine the ports
that can be aggregated. In this way, the two parties can reach an agreement in
adding/removing the port to/from a dynamic aggregation group.
Operation key is generated by the system. It is determined by port settings such as port
speed, duplex mode, and basic configurations (refer to
Aggregation
Selected ports in a manual aggregation group or a static aggregation group have
the same operation key.
Member ports in a dynamic aggregation group have the same operation key.
for description on basic configurations).
Chapter 1 Link Aggregation Configuration
Requirements on Ports for Link
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