Bash-Ubuntu 18.04-ROS-Melodic: Ping to IP address does not return anything
I have a Velodyne Puck 16 sensor that I have been trying to connect to ROS Melodic for the past few days. My OS is Ubuntu 18.04. I was able to find out the address of the lidar using WireShark, as it is possible to see below:
So the IP is: 10.0.1.201
After very very carefully following the installation procedure in the official documentation everything I was trying was unsuccessful.
So I decided to apply a simple ping procedure to the address of the lidar:
ping 10.0.1.201 it does not return any package of information despite it seems connected.
The problem I have is that, despite I know the IP address of my Velodyne 16 using Wireshark, the lidar does not answer to a simple test as the ping of the id.
Steps I followed:
1 Configure your computer’s IP
Below the connection procedure: I created a velodyne_interface connection, see below:
Existing Connection
velodyne_interface
2 Connecting your computer to LIDAR through terminal
emanuele@pc:~$ sudo ifconfig enp109s0 192.168.3.100
Add a static route to the LIDAR's IP address.
emanuele@pc:~$ sudo route add 10.0.1.201 enp109s0
3 Checking the configurations [Problem is here]
To check the connection open your web browser and access the following sensor’s network address.
The problem is that I never get to see the webpage showing the lidar data. Basically I never get to see the page below provided in the official documentation:
What is happening? Why is that happening?
There is probably some problems with the routing. You can try debugging the routing issues, some googling will probably help there. Some commands which might help pinpoint the problem tracepath -n 10.0.1.201 and ip route list.
The easiest solution to your problem would be to just configure the "velodyne_interface" you created to the same subnet as your velodyne lidar. So in the "velodyne_interface" set your ip to 10.0.1.20 for example. Connect to the "velodyne_interface" connection, verify that you have the ip you set by typing ip a or ifconfig in some terminal and you should be able to access the Velodyne web interface from 10.0.1.201. From there you can configure the velodyne sensor networking to the settings you like.
- How to highlight bash/shell commands in markdown?
- Determine if a function exists in bash
- How to use bash functions with fish
- An "and" operator for an "if" statement in Bash
- How can I extract a predetermined range of lines from a text file on Unix?
- Using the passwd command from within a shell script
- Bash command substitution issues
- How do you normalize a file path in Bash?
- oh-my-posh on bash, how can I display the current command history number
- Accessing bash command line args $@ vs $*
- How can I recall the argument of the previous bash command?
- Listing the content of a tar file or a directory only down to some level
- How would I use strings inside a for loop?
- set -e exits at i=0;let i++
- How to view files in binary from bash?
- bash: variable outside function scope
- Bash (vs. Zsh): Globbing behavior differences in different environments
- Using dot or "source" while calling another script - what is the difference?
- Extract a string betwen two characters of bigger string with "cut" or "sed"
- How can Bash execute a command in a different directory context?
- How To Stop Git-Bash command on windows
- Find and kill a process in one line using bash and regex
- What is a unix command for deleting the first N characters of a line?
- Write the contents of node debug log to file
- YAML azure piplelines & templates - Iterate through each values splitted from a string passed from main pipeline OR pass array as output with bash
- How to run bash script within VS Code?
- GoCD run bash script on Pipeline
- What does the Bash operator <<< (i.e. triple less than sign) mean?
- Why GNU parallel used with exported Bash function with an argument enclosed in <> leads to "No such file or directory"?
- Getting a "-bash: [: : integer expression expected" error on bash shell startup in arch