C
HAPTER
4
| Configuring the Switch
Creating Trunk Groups
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◆ All ports on both ends of an LACP trunk must be configured for full
duplex, either by forced mode or auto-negotiation.
◆ Trunks dynamically established through LACP will be shown on the
LACP System Status page (page 225) and LACP Port Status (page 226)
pages under the Monitor menu.
◆ Ports assigned to a common link aggregation group (LAG) must meet
the following criteria:
■
Ports must have the same LACP Admin Key. Using auto-
configuration of the Admin Key will avoid this problem.
■
One of the ports at either the near end or far end must be set to
active initiation mode.
◆ Aggregation Mode Configuration located under the Static Aggregation
menu (see "Configuring Static Trunks" on page 129) also applies to
LACP.
PARAMETERS
The following parameters are displayed on the configuration page for
dynamic trunks:
◆ Port – Port identifier. (Range: 1-28)
◆ LACP Enabled – Controls whether LACP is enabled on this switch port.
LACP will form an aggregation when two or more ports are connected
to the same partner. LACP can form up to 12 LAGs per switch.
◆ Key – The LACP administration key must be set to the same value for
ports that belong to the same LAG. (Range: 0-65535; Default: Auto)
Select the Specific option to manually configure a key. Use the Auto
selection to automatically set the key based on the actual link speed,
where 10Mb = 1, 100Mb = 2, and 1Gb = 3.
◆ Role – Configures active or passive LACP initiation mode. Use Active
initiation of LACP negotiation on a port to automatically send LACP
negotiation packets (once each second). Use Passive initiation mode on
a port to make it wait until it receives an LACP protocol packet from a
partner before starting negotiations.
WEB INTERFACE
To configure a dynamic trunk:
1. Click Configuration, Aggregation, LACP.
2. Enable LACP on all of the ports to be used in an LAG.
3. Specify the LACP Admin Key to restrict a port to a specific LAG.
4. Set at least one of the ports in each LAG to Active initiation mode,
either at the near end or far end of the trunk.
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