When designing and building a wireless mesh network here are a few system characteristics to consider. Some of these apply to the backhaul network design and others to the CAPWAP controller design:
â¢Recommended backhaul is 24 Mb/s
-24 Mb/s is chosen as the optimal backhaul rate because it aligns with the maximum coverage of the WLAN portion of the client WLAN of the MAP; that is, the distance between MAPs using 24 Mb/s backhaul should allow for seamless WLAN client coverage between the MAPs.
-A lower bit rate might allow a greater distance between mesh access points, but there are likely to be gaps in the WLAN client coverage, and the capacity of the backhaul network is reduced.
-An increased bit rate for the backhaul network either requires more mesh access points or results in a reduced SNR between mesh access points, limiting mesh reliability and interconnection.
-The wireless mesh backhaul bit rate (set on the controller), like the mesh channel, is set by the RAP.
"Cisco Aironet 1520, 1130, 1240 Series Wireless Mesh Access Points, Design and Deployment Guide, Release 5.2":
http://www.cisco.com/en/US/docs/wireless/technology/mesh/design/guide/MeshAP_52.html#wp998200