The file contains the ID, user and hostname, and ip address for each node you want to use in the data collection experiment. The ip addresses are used to create a virtual network on top of the current routes.
The file should have one entry per line in the form:
For example:
11 root@swan-ap71 6.95.53.176
[close]
12 root@swan-ap72 6.95.53.53
13 root@swan-ap73 6.95.53.161