Based on link aggregation, a solution of the front end interface subsystem which is suited for cluster server system was provided and implemented; so as to expand the number of the front end nodes with changing of application scope and enhance the availability of the cluster system.

As to the multiple link problems in this scheme,a link aggregation method was present to aggregate several links in the OLT and ONU,the description in the OSI reference model was given for the link aggregation spans different PONs.

In allusion to the bottle-neck of the mobile video control accessing to bandwidth,the paper has put forward the solution of multi-routing link aggregation,which makes the most of the wireless network established to achieve the higher transmission by the aggregating the bandwidth of data communication channel.

Market size,scope economies and supply chain clustering possibility

Recently some researchers pointed out that supply chain cluster should be viewed as an important alternative for explaining why China became the world factory and the China Price was observed.