Dell Networking N4000 Series User Manual

Configuring Link Aggregation 913
28
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
• Multi-Switch LAG (MLAG)
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 Networking series switches
support industry-standard LAGs that adhere to the IEEE 802.3ad
specification.
Assignment of interfaces to dynamic LAGs is based on a maximum of 144
interfaces assigned to dynamic LAGs, a maximum of 72 dynamic LAGs and a
maximum of 8 interfaces per dynamic LAG. For example, 72 LAGs may be
assigned 2 interfaces each, or 18 LAGs may be assigned 8 interfaces each.
Each LAG can consist of up to eight 1 Gbps or eight 10 Gbps ports (or even
eight 40 Gbps interfaces). 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 10 Gbps
links. The LAG provides full-duplex bandwidth of 40 Gbps between the two
switches.

Dell Networking N4000 Series Specifications

General

Brand	Dell
Model	Networking N4000 Series
Category	Switch
Language	English