A10E/A28E/A28F Configuration Guide
system LACP protocol priority, system MAC address, interface LACP priority, interface ID,
and operation Key.
After receiving the LACPDU, the peer compares its information with the one received by
other interfaces to select a selected interface. Therefore, the interface and the peer are in the
same Selected state. The operation key is a configuration combination automatically
generated based on configurations of the interface, such as the speed, duplex mode, and
Up/Down status. In a link aggregation group, interfaces in the Selected state share the
identical operation key.
Dynamic LACP link aggregation
In dynamic LACP link aggregation, the system automatically creates and deletes the link
aggregation group and member interfaces through LACP. Interfaces cannot be automatically
aggregated into a group unless their basic configurations, speeds, duplex modes, connected
devices, and the peer interfaces are identical.
In manual aggregation mode, all member interfaces are in forwarding state, sharing loads. In
static/dynamic LACP mode, there are backup links.
Link aggregation is the most widely-used and simplest Ethernet reliability technology.
The A10E/A28E supports manual and static link aggregation only.
7.1.2 Preparing for configurations
Scenario
When needing to provide higher bandwidth and reliability for a link between two devices, you
can configure the link aggregation.
With link aggregation, multiple physical Ethernet ports are added to a Trunk group and are
aggregated to a logical link. The link aggregation helps sharing uplink and downlink traffics
among members in one aggregation group. Therefore, the link aggregation helps get higher
bandwidth and helps members in one aggregation group back up data for each other, which
improving the reliability of Ethernet connection.
Prerequisite
Before configuring link aggregation, you need to configure physical parameters on a port and
make the physical layer Up.
7.1.3 Default configurations of link aggregation
The default configuration of link aggregation is as below.
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