Port Management
Link Aggregation
Cisco 350XG & 550XG Series 10G Stackable Managed Switches
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LAG Management
LAG Management
In general, a LAG is treated by the system as a single logical port. In particular, the
LAG has port attributes similar to a regular port, such as state and speed.
The device supports 32 LAGs with up to 8 ports in a LAG group.
Every LAG has the following characteristics:
•
All ports in a LAG must be of the same media type.
•
Ports in a LAG must not be assigned to another LAG.
•
No more than eight ports are assigned to a static LAG and no more than 16
ports can be candidates for a dynamic LAG.
•
When a port is added to a LAG, the configuration of the LAG is applied to
the port. When the port is removed from the LAG, its original configuration
is reapplied.
•
Protocols, such as Spanning Tree, consider all the ports in the LAG to be
one port.
Default Settings and Configuration
By default, ports are not members of a LAG and are not candidates to become
part of a LAG.
Static and Dynamic LAG Workflow
After a LAG has been manually created, LACP cannot be added or removed until
the LAG is edited and a member is removed. Only then the LACP button become
available for editing.
To configure a
static
LAG, perform the following actions:
1. Disable LACP on the LAG to make it static. Assign up to eight member ports to
the static LAG by selecting and moving the ports from the
Port List
to the
LAG
Members
list. Select the load balancing algorithm for the LAG. Perform these
actions in the
2. Configure various aspects of the LAG, such as speed and flow control by using
page.
