SGS-6341-Series User Manual

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Key, for the static aggregation group, the ports of Active have the same operation Key.
The port aggregation is that multi-ports are aggregated to form an aggregation group, so as to
implement the out/in load balance in each member port of the aggregation group and provides
the better reliability.
12.2.1 Static LACP Aggregation
Static LACP aggregation is enforced by users configuration, and do not enable LACP protocol.
When configuring static LACP aggregation, use “on” mode to force the port to enter the
aggregation group.
12.2.2 Dynamic LACP Aggregation
1. The summary of the dynamic LACP aggregation
Dynamic LACP aggregation is an aggregation created/deleted by the system automatically; it
does not allow the user to add or delete the member ports of the dynamic LACP aggregation.
The ports, which have the same attribute of speed and duplex, are connected to the same
device, have the same basic configuration, and can be dynamically aggregated together. Only
one port can create the dynamic aggregation and that is the single port aggregation. In the
dynamic aggregation, LACP protocol of the port is in the enable state.
2. The port state of the dynamic aggregation group
In dynamic aggregation group, the ports have two states: selected or standby. Both selected
ports and standby ports can receive and send LACP protocol, but standby ports cannot
forward the data packets.
The limitation of the max. port number is in the aggregation group. If the current number of the
member ports exceeds the limitation of the max. port number, then the system of this end will
negotiate with the other end to decide the port state according to the port ID. The negotiation
steps are as follows:
Compare ID of the devices (the priority of the system + the MAC address of the system). First,
compare the priority of the systems, if they are the same, then compare the MAC address of
the systems. The end with a small device ID has the high priority.
Compare the ID of the ports (the priority of the port + the ID of the port). For each port in the
side of the device which has the high device priority, first, compare the priority of the ports, if
the priorities are same, then compare the ID of the ports. The port with a small port ID is
selected, and the others become the standby ports.
In an aggregation group, the port which has the smallest port ID and is in the selected state will
be the master port while the other ports in the selected state will be the member port.
User’s Manual of SGS-6341 series