TEMPORARY ORDERED ROUTING ALGORITHM
TORA is designed to work in highly dynamic environment with a lot of mobility, ope of the main focus is to localize the control messages to a relative small portion of the network
The basic function of TORA are
- route maintenance is done through the link reversal algorithm that limits the node involved to a local area around the fault
- route creation in this phase a direct acyclic graph is created from the source to the destination, this graph is created exploiting flooding
- route erasure a packet is routed in order to invalid routes
TORA maintains a local DAG for each node of the network, nodes are labeled with a height metric that is dependent on the logical time of the node
| ADVANTAGES | DISADVANTAGES |
|---|---|
| Less control overload cause control packets are limited to a small portion of the network | local changes results in non optimal routing |
| the concurrent deletion and deduction of routes can results in temporary loops |