在都市中实现有线局域网间互联的费用是非常昂贵的。为了在被道路分隔开的两座建筑物之间布线，用户必须进行勘测、挖掘管道（以及阻碍交通） 、重新铺路或租用每月付费

无线网桥-In the city wired LAN Interconnection costs are very expensive. In order to be separated from the road route between the two buildings, the user must carry out the investigation, excavation pipeline (and hold up traffic), re-paving or rent paid monthly wireless bridge