KBC Networks ESML8P-PC2 - Manual (Page 47)

Manual-ESML8P-PC2_Series-Rev1211
Copyright © KBC Networks Ltd.
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Port Control interface
5.2.13 Port Trunk
Port trunking is the combination of several ports or network cables to expand the connection
speed beyond the limits of any one single port or network cable. Link Aggregation Control
Protocol (LACP), which is a protocol running on layer 2, provides a standardized means in
accordance with IEEE 802.3ad to bundle several physical ports together to form a single logical
channel. All the ports within the logical channel or so-called logical aggregator work at the
same connection speed and LACP operation requires full-duplex mode.
Aggregator Setting
Please read the instructions below to make an LACP or non-LACP trunk group.
• System Priority: A value which is used to identify the controlling switch of an LACP
link system. The switch with the lower value has the higher system priority and is
selected as the controlling end, which controls port priorities, of the LACP link system.
• Group ID: There are four trunk groups to be selected. Assign the group ID to the
particular trunk group.
• LACP: Click the pull-down menu to enable/disable LACP for the trunk group. With LACP
enabled, a port which joins an LACP trunk group has to make an agreement with its
member ports first. Please notice that a trunk group, including member ports split
between two switches, has to enable the LACP function of the two switches. When
disabled, the trunk group is a static trunk group. The advantage of having the LACP
disabled is that a port joins the trunk group without any handshaking with its member
ports; but member ports won’t know that they should be aggregated together to form a
logic trunk group.