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Cisco Outdoor Mesh Access Points
The 4.9-GHz and 5.8-GHz radios are 802.11a subband radios that support a subset of specific 802.11a channels
and include a subband specific filter designed to lessen interference from other 11a subband radios within the
same mesh access point.
The 4.9-GHz subband radio on the AP1524 supports public safety channels within the 5-MHz (channels 1 to
10), 10-MHz (channels 11 to 19), and 20-MHz (channels 20 to 26) bandwidths.
• The data rates supported within the 5-MHz bandwidth are 1.5, 2.25, 3, 4.5, 6, 9, 12, and 13.5 Mbps. The
default rate is 6 Mbps.
• The data rates supported within the 10-MHz bandwidth are 3, 4.5, 6, 9, 12, 18, 24, and 27 Mbps. The
default rate is 12 Mbps.
Cisco 1524SB Mesh Access Point
The AP1524SB mesh access point (part number: AIR–LAP1524SB–X–K9) includes three radios: one 2.4-GHz
radio and two 5-GHz radios.
The 2.4-GHz radio is for client access (nonpublic safety traffic). The two 5-GHz radios serve as serial backhauls:
one uplink and one downlink. The AP1524SB is suitable for linear deployments.
In the 6.0 release, the 5-GHz radios in the –A domain could be operated only in the 5.8-GHz band with
Note
5 channels. In the 7.0 release, these radios cover the whole 5-GHz band.
Each 5-GHz radio backhaul is configured with a different backhaul channel. There is no need to use the same
shared wireless medium between the north-bound and south-bound traffic in a mesh tree-based network.
On the RAP, the radio in slot 2 is used to extend the backhaul in the downlink direction; the radio in slot 1 is
used only for client access and not mesh.
On the MAP, the radio in slot 2 is used for the backhaul in the uplink direction; the radio in slot 1 is used for
the backhaul in the downlink direction.
You only need to configure the RAP downlink (slot 2) channel. The MAPs automatically select their channels
from the channel subset. The available channels for the 5.8-GHz band are 149, 153, 157, 161, and 165.
This figure shows an example of channel selection when the RAP downlink channel is 153.
Figure 2: Channel Selection Example
Fall Back Mode
Slot 1 in a 5-GHz radio in a MAP can act as an uplink radio for the backhaul in any one of the following
scenarios:
• Slot 2 radio fails.
• Antenna for slot 2 radio goes bad.
Cisco Mesh Access Points, Design and Deployment Guide, Release 7.3
12
Mesh Network Components
OL-27593-01
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