User guide

Advanced Configuration AP-4000MR User Guide

Interfaces

• In compliance with FCC regulations, the AP uses ATPC (Automatic Transmit Power Control) to automatically adapt

transmit power when the quality of the link is more than sufficient to maintain a good communication with reduced

transmit power. See Transmit Power Control/Transmit Power Level for more information.

DFS is required for three purposes:

1. Radar avoidance both at startup and while operational. To meet these requirements, the AP scans available

frequencies at startup. If a DFS enabled channel is busy or occupied with radar, the system will blacklist the channel

for a period of 30 minutes in accordance with FCC, IC, ETSI, and TELEC regulations. Once fully operational on a

frequency, the AP actively monitors the occupied frequency. If interference is detected, the AP blacklists the channel,

logs a message and rescans to find a new frequency that is not busy and is free of radar interference.

2. Guarantee the efficient use of available frequencies by all devices in a certain area. To meet this requirement, the AP

scans each available frequency upon startup and selects a frequency based upon the least amount of noise and

interference detected. This lets multiple devices operate in the same area with limited interference. This procedure is

done only at startup; if another UNII device comes up on the same frequency, the AP does not detect this or rescan

because of it. It is expected that other devices using these frequencies also are in compliance with country

regulations, so this should not happen.

3. Uniform Channel Spreading. To meet this requirement, the AP randomly selects its operating channel from the

available channels with least interference.

Affected Countries

Japan is certified in the TELEC regulatory domain, Canada is certified in the IC regulatory domain, and the USA is

certified in the FCC regulatory domain for operation in the 5 GHz band.

The following countries are certified in the ETSI regulatory domain for operation in the 5 GHz band:

VLAN on Ethernet Port

VLANs are very useful to segment the LAN into different broadcast domains. This helps in reducing the broadcast

domain by separating logical segments of a LAN. VLANs can operate in different modes based on the incoming traffic.

VLAN on Ethernet port of AP can be configured in different ways. Following are the different modes in which VLAN

functions.

•

Transparent Mode

• Access Mode

• Trunk Mode

• Mixed Mode

–Austria –Greece –Norway

– Belgium – Hungary – Poland

– Czech Republic – Ireland – Portugal

–Cyprus –Italy –Spain

– Denmark – Latvia – Sweden

– Estonia – Lithuania – Switzerland

– Finland – Luxembourg – UK

– France – Malta

– Germany – Netherlands