[ns] Why routing is performed on layer 2 in IEEE 802.11s wireless mesh networks standard

2008-05-19 Thread Ghada Al-Mashaqbeh 

  Dear all,
   
  I just want to find a reasonable justfications of why the IEEE 802.11s 
standard have specified that routing must take place at layer 2 of the protocol 
stack not layer 3? and which is better routing on layer 2 or layer 3 of the 
protocol stack?
   
  Thanks,
   
  Ghada

Re: [ns] Why routing is performed on layer 2 in IEEE 802.11s wireless mesh networks standard

2008-05-19 Thread Arturo Servin 


I remember something similar with Frame Relay and mostly with ATM,  
which in deed had its own routing protocol PNNI. I do not know about  
IEEE 802.11s but with ATM you need to switch the cells independently  
from the L3 protocol (then it came MPLS and we forgot about ATM), I  
imagine that 802.11s has some needs about meshing topologies, roaming,  
etc. that require that independent routing from the L3.

Regards,
-as

On 19 May 2008, at 22:24, Ghada Al-Mashaqbeh wrote:


  Dear all,

  I just want to find a reasonable justfications of why the IEEE  
 802.11s standard have specified that routing must take place at  
 layer 2 of the protocol stack not layer 3? and which is better  
 routing on layer 2 or layer 3 of the protocol stack?

  Thanks,

  Ghada