Jetson TK1-ssh

Autonomous Machines Jetson & Embedded Systems Jetson TK1
1

I cannot access the Jetson TK1 by ssh.
I have both my laptop and the Jetson TK1 connected to the router by ethernet cables, but when I ping the jetson through the terminal I always get the same response:

~$ ping tegra-ubuntu
ping: unknown host tegra-ubuntu

I do not understand why and I installed the Jetpack with this configuration and i did not give me any problems. What can I do?

Thanks

2

Perhaps it just doesn’t know how to convert “tegra-ubuntu” to a dotted-decimal format IP address. If you look at your router logs, can you see it ever assigning an IP address or does it see the DHCP request? If so, can you network to that dotted-decimal version?

3

I am a novice here, but I do know which IP address corresponds to the Jetson. Do you mean that I can ping directly the IP address or aren’t I following you?

Thanks

4

done, thanks!!

5

Basically there is no such thing as an address by name…it’s always decimal. The dotted-decimal format looks something like “192.168.1.1”. There is a service (DNS) which looks up names and tries to provide dotted-decimal. Without that service the dotted-decimal still works, but names do not (including “tegra-ubuntu”).

Since your tegra-ubuntu is not part of a public network no DNS provider has any idea what address is assigned. It’s up to your host to manually know this, or else it is up to the router to know. It is quite possible the router assigned dotted-decimal but does not know named address. Checking the router logs is the way to go…most routers have a web interface and you can check logs or just directly look somewhere on the router and see what addresses it assigned. If your host is the router then this would be on your host; if this is a router appliance then it would be part of the router. If you can find any kind of log on your router (and I am curious if you have a separate router or if your host is acting as router) it would be of great benefit.

Note that if you can use the 9-pin D-sub connector for serial console (settings 115200 8N1) it would be very beneficial as well since this is immune to many kinds of failures and works even in the boot loader before Linux ever starts.