Port Management
Link Aggregation
Cisco Small Business SG200 Series 8-port Smart Switches Administration Guide
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•
Dynamic LAG
—A dynamic LAG is configured with one or more candidate
ports. The LAG is formed by exchanging Link Aggregation Control Protocol
Data Units with the remote device connecting to the candidate ports. When
formed, the LAG might include only a subset of the eligible ports,
depending on the port number limitations for LAGs and other factors.
Candidate ports that are not selected as active member ports of a LAG are
standby ports. A standby port can be selected as an active member when
an active port in the same LAG fails.
The following topics provide additional information on the configuration pages
available in the Port Management > Link Aggregation menu:
•
Configuring LAGs
•
Configuring LAG Settings
•
Configuring LACP Settings
Configuring LAGs
The switch supports up to 4 LAGs, with 8 ports per LAG. Use the
LAG
Management
page to assign ports to LAGs and LACPs.
To display this page, click
Port Management
>
Link Aggregation
>
LAG
Management
in the navigation window.
Four dynamic LAGs are preconfigured by default named
ch1
through
ch4
. They
have no port members and are disabled.
You can add or remove ports to or from a LAG without disrupting traffic on the
LAG.
LAGs can be assigned membership in VLANs; however, individual ports lose their
individual VLAN memberships when they become LAG members. When a port is
removed from a LAG, it rejoins the VLANs that it previously belong to as specified
in the startup configuration.
To configure a LAG:
STEP 1
Select a LAG to configure, and then click
Edit
.
STEP 2
Specify the following for the selected LAG:
•
LAG Name
—Enter up to 15 alphanumeric characters to identify the LAG.
•
Type
—Select Static to manually assign ports to the LAG. Select Dynamic to
enable the ports to exchange LACPDUs to dynamically form the LAG.
