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 > > > >
