Aggregation Overview - Lenovo ThinkSystem NE2552E Application Manual

Aggregation Overview

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When using LAGs between two switches, as shown in Figure
virtual link between them, operating with combined throughput levels that
depends on how many physical ports are included.
Two types of aggregation are available: static LAGs and dynamic Link
Aggregation Control Protocol (LACP) LAGs. Up to 52 LAGs of each type are
supported, depending of the number and type of available ports. Each LAG can
include up to 24 member ports.
Figure 9. Link Aggregation Group (LAG)
Switch 1
LAGs are also useful for connecting a NE2552E to third‐party devices that support
link aggregation, such as Cisco routers and switches with EtherChannel
technology (not ISL aggregation technology) and Sunʹs Quad Fast Ethernet
Adapter. Static LAG technology is compatible with these devices when they are
configured manually.
LAG traffic is statistically distributed among the ports in a LAG, based on a variety
of configurable options.
Also, since each LAG is comprised of multiple physical links, the LAG is inherently
fault tolerant. As long as one connection between the switches is available, the
LAG remains active and statistical load balancing is maintained whenever a port in
the LAG is lost or returned to service.
9, you can create a
Switch 2
LAG
Chapter 9: Ports and Link Aggregation (LAG)
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