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z Switch 4210 Family that support extended LACP functions can be used as intermediate devices in
LACP MAD implementation.
z For details about IRF, member devices, intermediate devices, and the LACP MAD mechanism, see
the operation manuals of IRF-supported devices.
Operational Key
Operation key is generated by the system. It is determined by port settings such as port speed, duplex
mode, and basic configurations (refer to
Requirements on Ports for Link Aggregation for description on
basic configurations).
z Selected ports in a manual aggregation group or a static aggregation group have the same
operation key.
z Member ports in a dynamic aggregation group have the same operation key.
Requirements on Ports for Link Aggregation
To achieve outgoing/incoming load sharing in an aggregation group, the member ports to perform load
balancing must have the same speed, duplex mode, and basic configurations, which include:
z STP configuration, including STP status (enabled or disabled), link attribute (point-to-point or not),
STP priority, STP path cost, STP packet format, loop guard status, root guard status, edge port or
not.
z QoS configuration, including traffic limit, priority remarking, 802.1p priority, traffic redirection, traffic
statistics, and so on.
z VLAN configuration, including permitted VLANs, and default VLAN ID.
z Link type configuration, which can be trunk, hybrid, or access.
z GVRP configuration, including GVRP state (enabled/disabled), GVRP registration type, and GARP
timer settings.
z VLAN-VPN configuration, including VLAN-VPN state (enabled/disabled).
Link Aggregation Classification
Depending on different aggregation modes, the following three types of link aggregation exist:
z Manual aggregation
z Static LACP aggregation
z Dynamic LACP aggregation
Manual Aggregation Group
Introduction to manual aggregation group
A manual aggregation group is manually created. All its member ports are manually added and can be
manually removed (it inhibits the system from automatically adding/removing ports to/from it). Each
manual aggregation group must contain at least one port. When a manual aggregation group contains
only one port, you cannot remove the port unless you remove the whole aggregation group.
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