User manual

C HAPTER 4 | Configuring the Switch
Creating Trunk Groups
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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.
◆ Timeout – The timeout to wait for the next LACP data unit (LACPDU).
The timeout is set in the LACP timeout bit of the Actor State field in
transmitted LACPDUs. When the partner switch receives an LACPDU set
with a short timeout from the actor switch, the partner adjusts the
transmit LACPDU interval to 1 second. When it receives an LACPDU set
with a long timeout from the actor, it adjusts the transmit LACPDU
interval to 30 seconds. (Default: Fast)
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Fast – Specifies a fast timeout of 3 seconds.
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Slow – Specifies a slow timeout of 90 seconds.
◆ Prio – If a link goes down, LACP port priority is used to select a backup
link. (Range: 0-65535; Default: 32768)
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Setting a lower value indicates a higher effective priority.
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If an active port link goes down, the backup port with the highest
priority is selected to replace the downed link. However, if two or
more ports have the same LACP port priority, the port with the
lowest physical port number will be selected as the backup port.
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If an LAG already exists with the maximum number of allowed port
members, and LACP is subsequently enabled on another port using
a higher priority than an existing member, the newly configured
port will replace an existing port member that has a lower priority.
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.
5. Click Save.