Hi there,
Hardware
upgrades can increase Ethernet link bandwidth but at high costs. In addition,
hardware upgrades are less flexible than software upgrades. Ethernet link
aggregation addresses these issues and supports the following functions:
The maximum bandwidth of a link aggregation group (LAG) is equal to the total bandwidths of
all links in a LAG. Hardware upgrades are not required and costs are curtailed.
Traffic in a LAG
is distributed to member links using the load-sharing algorithm, implementing
load sharing and improving link usage.
Member links in
a LAG dynamically backs up each other. When one link is interrupted, a backup
link immediately takes over.
Link aggregation
functions between interconnected devices only and are independent of the network
topology.
A logical link
aggregating several physical links is called a LAG.
PS: Link
aggregation is also called port aggregation because each link corresponds to
two specific ports on an Ethernet network.
Thanks.