Bộ khuếch đại thường gắn kết với một bề mặt rắn bằng cách sử dụng ốc vít thông qua các tấm mặt bích của bộ khuếch đại. Cấu hình của các bộ khuếch đại RF là không cần thiết trừ khi bộ khuếch đại là một bộ khuếch đại RF biến. Nếu bộ khuếch đại có thể thay đổi | 239 Chapter 9 -Troubleshooting Wireless LAN Installations If you do co-locate three access points in this manner it is recommended that you implement the co-location using the same manufacturer s hardware for all three access points. It has been noted in many lab scenarios that using differing vendors equipment for co-location has a negative effect on throughput of one or more of the access points. This negative effect could be simply due to differing output power and proximity between access points but could be related to many other factors as well. Solutions for Co-location Throughput Problems As a wireless LAN installer or administrator you really have two choices when considering access point co-location. You can accept the degraded throughput or you can attempt a workaround. Accepting the fact that your users will not have 5 Mbps of actual throughput to the network backbone on each access point may be an acceptable scenario. First however you must make sure that the users connecting to the network in this situation can still be productive and that they do not actually require the full 5 Mbps of throughput. The last thing you want to be responsible for as a wireless LAN administrator is a network that does not allow the users to do their jobs or achieve the connections that they require. An administrator s second option in this case is to attempt a workaround. Below we describe some of the alternatives to co-location problems. Use Two Access Points One option which is the easiest is to use channels 1 and 11 with only 2 access points as illustrated in Figure . Using only these two channels will ensure that you have no overlap between channels regardless of proximity between systems and therefore no detrimental effect on the throughput of each access point. By way of comparison two access points operating at the maximum capacity of Mbps about the best that you can expect by any access point give you a total capacity of 11 Mbps of aggregate throughput .
