[Trac #861] Nodes with different MAC address prefix cannot form a mesh.

Zarro Boogs per Child bugtracker at laptop.org
Fri Feb 2 22:32:52 EST 2007


#861: Nodes with different MAC address prefix cannot form a mesh.
----------------------+-----------------------------------------------------
 Reporter:  jcardona  |       Owner:  jcardona
     Type:  defect    |      Status:  new     
 Priority:  high      |   Milestone:  BTest-3 
Component:  wireless  |    Keywords:  mesh    
----------------------+-----------------------------------------------------
 In the firmware, a condition for a packet to be considered mesh traffic is
 that
 the  source MAC address has the same prefix as our MAC address. The reason
 for
 this is that we cannot use mesh frame types (type 0x3) for the mesh. There
 is a
 hardware limitation in the MAC controller that prevents us from using this
 new
 type, and we are using WDS frames instead.  To discriminate mesh from
 legitimate WDS frames, we currently inspect the address prefix.

 The length of the prefix is currently set to 4, which means that two
 laptops that differ in the 4th byte of the mac address will not be able to
 communicate in the mesh.

-- 
Ticket URL: <http://dev.laptop.org/ticket/861>
One Laptop Per Child <http://laptop.org/>



More information about the Bugs mailing list