Configuring Link Aggregation; Link Aggregation Overview - Dell PowerEdge M420 Configuration Manual

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 M6220, M6348, M8024, and M8024-k switches support
industry-standard LAGs that adhere to the IEEE 802.3ad specification. The
number of supported static and dynamic LAGs depends on the number of
ports and whether the switch supports stacking. For PCM6220 or PCM6348
switches, aA 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.
Configuring Link Aggregation
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