User`s guide

225
CHAPTER
13
Link Aggregation Groups (LAGs)
A link aggregation group (LAG) is a grouping of physical Ethernet ports, which
enables you to combine multiple individual physical Ethernet ports into one logical
port group. As a result, the ports combined into a LAG can operate in parallel with
the benefit of increased bandwidth and high availability.
This chapter explains how to configure a LAG and provide those benefits to your
virtual resources. It contains the following sections:
■ “Employing LAG” on page 225
■ “LAG Commands” on page 228
Employing LAG
When you configure LAG, you specify a group a name consisting of a slot number
and LAG ID from 1 to 5, then assign ports from the same module to the group. At
least one port must be specified when you initially create the LAG.
Virtual NICs can be bound to a LAG when the vNICs are created. If you are
configuring a vNIC in a LAG, you must configure the LAG first. By doing so, you
make the LAG available as a selectable object.
LAGs are connections that make a fatter pipe out of the individual Ethernet ports.
LAGs are assigned on a one-to-one basis between the Oracle Fabric Interconnect and
the peer Ethernet device. Therefore, the same port(s) cannot be assigned to multiple
LAGs. For example, ports 1 through 5 cannot be assigned to LAG 2 and LAG 4.
LAGs are supported on the 10-Port GE module and 4-Port 10 GE module only. (The
10 GE Module has only one port, and therefore, does not support LAGs.) The OVN
implementation of LAG was designed with guidelines from the IEEE 802.3ad LAG
standard.