Netgear XCM8806 - 8800 SERIES 6-SLOT CHASSIS SWITCH 사용자 설명서

to be aggregated into one logical port, or link aggregation group (LAG). See IEEE 802.3ad for 
more information on this feature. The advantages to link aggregation include an increase in 
bandwidth and link redundancy.

This section describes the following topics:

•     Link Aggregation Overview 

•     Dynamic Versus Static Load Sharing 

•     Load-Sharing Algorithms 

•     LACP 

•     Health Check Link Aggregation 

•     Guidelines for Load Sharing 

•     Configuring Switch Load Sharing 

•     Load-Sharing Examples 

•     Displaying Switch Load Sharing 

Link Aggregation Overview

All ports in a LAG must be running at the same speed and duplex 

setting. Each port can belong to only one LAG.

Load sharing allows the switch to use multiple ports as a single logical port, or LAG. For 
example, VLANs see the LAG as a single logical port. And, although you can only reference 
the master port of a LAG to a Spanning Tree Domain (STPD), all the ports of the LAG 
actually belong to the specified STPD. Most load-sharing algorithms guarantee packet 
sequencing between clients.

Link aggregation, or load sharing, is disabled by default.

If a port in a load-sharing group (or LAG) fails, traffic is redistributed to the remaining ports in 
the LAG. If the failed port becomes active again, traffic is redistributed to include that port.

Load sharing must be enabled on both ends of the link, or a network 

loop may result. 

Link aggregation is most useful when:

The egress bandwidth of traffic exceeds the capacity of a single link.

Multiple links are used for network resiliency.

In both situations, the aggregation of separate physical links into a single logical link 
multiplies total link bandwidth in addition to providing resiliency against individual link failures.