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802.11n Access Points - Software Management Guide 49
Figure 5-13 Wireless Distribution System
In such a scenario, the MAC address of Access Point 1 is configured on Access Point 2 (within the same vicinity) and vice
versa. Once configured, a WDS link is established between BSS 1 and BSS 2. The data transmission over the WDS link follows
a four address format, which contains 1) MAC address of the source, 2) MAC address of the destination, 3) MAC address of
the transmitting AP device, 4) MAC address of the receiving AP device.
WDS supports two modes:
1. WDS - Legacy Mode: In this mode, a WDS link can be established between two Legacy AP devices supporting the
IEEE 802.11 a/b/g modes, without serving the 11n authentication functionality while establishing the WDS link. This
mode supports the WEP encryption type to secure the data.
By using this mode, we can connect AP-800 / AP-8000 / AP-8100 with legacy products AP-700 / AP-4000. To establish
a WDS link in this mode, configure both the VAPs in WDS-Legacy mode. To configure VAP in this mode, you need to
configure the following parameters first:
— Operational Mode: Set Operational Mode to 802 11a / 11g. Refer Properties
— Current Bandwidth: Set Current Bandwidth to 20 MHz. Refer Properties
Now, you can select the VAP Type as WDS-Legacy.
2. WDS - 11n Mode: In this mode, a WDS link can be established between two BSS supporting the IEEE 802.11na/ng
modes, serving the association and authentication functionalities. This mode supports the AES (128 bit) encryption
type to secure the data. In WDS-11n mode, each VAP can be configured as either:
a. WDS-END - A: The VAP enabled in this mode will act as a WDS enabled AP device and performs standard AP
functionality.
b. WDS-END - B: The VAP enabled in this mode will act as a WDS enabled wireless client and perform the
functions of a station/client.
By using this mode, we can connect only to AP-800 / AP-8000 / AP-8100. To establish a WDS link in this mode, one
VAP should be set to “WDS-END-A” and other VAP should be set to “WDS-END-B”. To configure VAP in this mode,
you need to configure the following parameters first:
— Operational Mode: Set Operational Mode to 802 11a/n or 11g/n. Refer Properties
— Current Bandwidth: Set Current Bandwidth to 20 MHz or 40 MHz. Refer Properties
Now, you can select the VAP Type as WDS-END A or WDS-END B.
Navigate to Configuration > Wireless > Interface 1 / Interface 2 > VAP, the configuration screens (WDS-legacy or
WDS-11n, as selected) appear:
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