Cisco 4402 Configuration Guide - Page 32

5 Physical installation of access points Where the access points are to be located has been determined by radio planning. The physical installation of the access points involves first the establishment of new network points at the locations of the access points. These points must then be patched to a switch and the access point must be installed. Most access points support PoE, i.e. 802.3af. Some newer access points which support 802.11n require more power and consequently one must have 802.3at. PoE is far more practical and usually cheaper than installing a separate power outlet close to the access point and connecting a permanent power supply. That solution also results in the loss of the possibility of remotely controlling the power supply in order to switch the access point on or off. Naturally, one must not use Cat 5 cable splitting with PoE (i.e. divide the four pairs into two connections each with two pairs). A disadvantage with using PoE is the extra heat it generates. The PoE switches often cause a rise in temperature, especially in smaller rooms and cabinets where they are often placed. To provide PoE to the access point one will need either a PoE-compatible switch or a PoE injector. Most access points are supplied with some form of installation kit. Follow the installation instructions for the access point. Note that the correct way to install a Cisco AP1130/AP1140/3500i is with the flat, plastic surface down. In other words, it is not optimally located when attached to a wall, although this is possible and probably preferred in some cases. This issue should have been determined during the radio planning. The radio should be located at least 20 centimetres from any metal objects. - Install wiring between switch and access point - Install access point/access points - Use power preferably by way of PoE from the switch, or through injector 32