Network in ROS - Robotics-Mark/ros_best_practices GitHub Wiki
to know the hostname that you can ping to its local $ hostname $ ping hostname.local
Ex: greah@cromPIL:~/repos/phd-thesis$ ping cromPIL.local PING cromPIL.local (192.168.16.1) 56(84) bytes of data. 64 bytes from 192.168.16.1: icmp_seq=1 ttl=64 time=0.074 ms 64 bytes from 192.168.16.1: icmp_seq=2 ttl=64 time=0.060 ms 64 bytes from 192.168.16.1: icmp_seq=3 ttl=64 time=0.064 ms
Network Time Protocol : chrony is important for timing synchronization which is crucial for frame of references.
References and resources : http://edu.gaitech.hk/turtlebot/network-config-doc.html