The invention relates to multi-device link aggregation (MDLA). A first MDLA device
is connected to a second MDLA device by an MDLA internal link. Each of the interconnected
first and second MDLA devices is connected to at least one common link aggregation
(LAG) partner device by an aggregated link, respectively. Typically, the first
and second MDLA devices exchange protocol data units (PDUs) to detect devices that
are connected to both the first and second MDLA devices such that they are able
to trick the detected devices into behaving as though the two MDLA devices are
a single device. If one of the MDLA devices fails, traffic of the associated aggregated
link to the failed MDLA device can be automatically forwarded by the other non-failed
MDLA device.
