Replica Degree Maintenance Protocol Simulation
Scenarios
We tested the Replica Degree Maintenance in challenging wide-scale deployment scenarios, with several hundreds of nodes. The dimensions of ES and IS were respectively 2700m and 1700m. We have modeled two different deployment scenarios: Participants were distributed so that the IS density was 7 time greater than the ES density. This means that 82% ca. of participants was placed within the IS. The value of the number of neighbors required for belonging to the dense MANET was experimentally obtained to make the dense MANET bounds almost coincide with IS bounds.

Mobility model
All nodes are mobile: after a randomly chosen time interval (uniformly distributed in the whole simulation duration, i.e., 7200s), they start moving along a rectilinear path, with randomly chosen speed direction and fixed speed module, ranging from 1m/s to 4m/s.

Parameters
Parameters were set as follows (for parameters related to other protocols refer to the protocols' pages):
   
Paramter Value
Discovery Delay 3 s
Participant Advertisement Interval 20 s
Participant Advertisement Delay 3 s
Hello Period 100 s
Check Hello Period 110 s
AUM Period 1000 s
AUM Check Period 1100 s
   
Messages exchanged between non-neighbor nodes exploit the Ad-hoc On-demand Distance Vector routing implementation integrated in ns-2. In addition, if not differently specified, we have used default NS2 values for simulation parameters, e.g., constant 250m circular transmission ranges, bi-directional connectivity, and IEEE 802.11 link layer protocol. With these settings we measured the overhead and accuracy of REDMAN replica degree maintenance protocol in maintaining 5 copies of 4 resources within the dense MANET.