Thomas Kunz
Systems and Computer Engineering
28
Routing
Protocols - Design
nProactive, Table-driven Approach
–Based on traditional link-state and
distance-vector routing protocols.
–Continuously update the topological view of the network by periodically exchanging
appropriate information among the nodes.
–Determine routes independent of traffic
pattern
–Examples: DSDV, OLSR (Optimized Link
State), TBRPF etc.
nReactive, On-demand Approach
–Discover and maintain routes only if
needed
–Do not continuously maintain the
overall network topology
–The network is
flooded with “route request” control packets when a new route is required.
–Examples: DSR, AODV, LAR, etc.
nHybrid Approach
–Combine the two approaches above:
locally proactive, globally reactive !
–Example: ZRP