Users Guide

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Link Aggregation 1079

Link Aggregation

Dell EMC Networking N-Series Switches

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

• Multi-Switch LAG (MLAG)

• Configuring Link Aggregation (Web)

• Configuring Link Aggregation (CLI)

Link Aggregation

Overview

Link Aggregation allows one or more full-duplex 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 Dell EMC Networking N-Series

switches support industry-standard LAGs that adhere to the IEEE 802.3ad

specification.

Assignment of interfaces to LAGs is based on a system limit of 144 interfaces

assigned to LAGs, a maximum of 72 dynamic LAGs (or 128 static LAGs) and

a maximum of 8 interfaces per LAG. For example, 72 dynamic LAGs may be

assigned 2 interfaces each, or 18 dynamic or static LAGs may be assigned 8

interfaces each. Alternatively, 128 interfaces can be assigned to 128 static

LAGs with each LAG containing a single port.

Each LAG can consist of up to eight Ethernet ports (for the Dell EMC

Networking N-Series switches). 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.