Port Management
Configuring Link Aggregation
Cisco 500 Series Stackable Managed Switch Administration Guide
135
10
-
Port protection is not subject to VLAN membership. Devices connected
to protected ports are not allowed to communicate with each other, even
if they are members of the same VLAN.
-
Both ports and LAGs can be defined as protected or unprotected.
Protected LAGs are described in the
Configuring LAG Settings
section.
•
Member in LAG
—If the port is a member of a LAG, the LAG number is
displayed; otherwise this field is left blank.
STEP 6
Click
Apply
.
The Port Settings
are written to the Running Configuration file.
Configuring Link Aggregation
This section describes how to configure LAGs. It covers the following topics:
•
Link Aggregation Overview
•
Static and Dynamic LAG Workflow
•
Defining LAG Management
•
Configuring LAG Settings
•
Configuring LACP
Link Aggregation Overview
Link Aggregation Control Protocol (LACP) is part of the IEEE specification (802.3az)
that enables you to bundle several physical ports together to form a single logical
channel (LAG). LAGs multiply the bandwidth, increase port flexibility, and provide
link redundancy between two devices.
Two types of LAGs are supported:
•
Static
—A LAG is static if the LACP is disabled on it. The group of ports
assigned to a static LAG are always active members. After a LAG is manually
created, the LACP option cannot be added or removed, until the LAG is
edited and a member is removed (which can be added prior to applying),
then the LACP button will become available for editing.
•
Dynamic
—A LAG is dynamic if LACP is enabled on it. The group of ports
assigned to dynamic LAG are candidate ports. LACP determines which
