Configuring Link Aggregation 819
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Configuring Link Aggregation
This chapter describes how to create and configure link aggregation groups
(LAGs), which are also known as port channels.
The topics covered in this chapter include:
• Link Aggregation Overview
• Default Link Aggregation Values
• Configuring Link Aggregation (Web)
• Configuring Link Aggregation (CLI)
• Link Aggregation Configuration Examples
Link Aggregation Overview
Link Aggregation allows one or more full-duplex (FDX) Ethernet links of the
same speed to be aggregated together to form a LAG. This allows the switch
to treat the LAG as if it is a single link.
The PowerConnect 7000 Series switches support industry-standard LAGs
that adhere to the IEEE 802.3ad specification. A switch stack can support up
to 96 static LAGs, and 18 of the LAGs can be dynamic. Each LAG can consist
of up to eight 1 Gbps or eight 10 Gbps ports. When eight Gigabit Ethernet
ports are configured as a LAG, the maximum bandwidth for the single, logical
interface is 8 Gbps, and when eight 10 Gbps ports are configured as a LAG,
the maximum bandwidth for the single, logical interface is 80 Gbps.
Figure 28-1 shows an example of a switch in the wiring closet connected to a
switch in the data center by a LAG that consists of four physical 1 Gbps links.
The LAG provides full-duplex bandwidth of 4 Gbps between the two
switches.
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