MANET ROUTING

Manet routing is a big challenge cause there are no fixed assumptions that can be made on the network characteristics so a lot of routing protocols where been proposed.

• Dynamic Source Routing (DSR)
• Ad hoc On-demand Distance Vector routing (AODV)
• Greedy Perimeter Stateless Routing (GPSR)

MANET PROTOCOLS CLASSIFICATION

NAME	DESCRIPTION
PROACTIVE	maintain valid routes independently on ongoing traffic,Generally, minor latency and greater overhead
REACTIVE	Maintain valid routes only if needed (on-demand)
GEOGRAPHIC	Usage of knowledge of destination location to perform forwarding
HYBRID	combination of the precedents

Manet routing protocols are REACTIVE because the nature of the MANET create

FLOODING (level 0 solution)

Simple method of routing with a lot of stupid assumption that allow to extrapolates the problems in man routing

flowchart LR
a((a))
b((b))
c((c))
d((d))
e((e))
f((f))
g((g))
h((h))
a ---> b & c
b ---> e & f & c
c ---> f & e
d ---> g & h
f ---> d
e ---> d

each node send the packet to all of the nodes in his visibility

ADVANTAGES

In this iteration a lot of problems occurs as it is a very bad performance solution but it has some advantages:

• packet are duplicated
• the protocol is extremely simple
• higher reliability due to the fact that multiple paths are discovered

DISADVANTAGES

There are a lot of disadvantages of course

• high overhead
• low reliability

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