- [Is it the ethernet that isn't working?](#ethernet-problems)

- [Is it the wireless that isn't working?](#wireless-problems)

First thing to ensure, that the ethernet cable is plugged in to the Pi and to your router or switch.

This isn't a standard configuration, and needs a bit more setting up, which is out of the scope of this troubleshooter and we don't currently have any documentation for it. Try Googling for connecting my Raspberry Pi directly to another computer.

If you are connected up, but nothing seems to work, lets see if you have been assigned as IP address by your network. Type in ```ifconfig``` on the console. This will display the status of all networking devices. For ethernet, we need to look at the ```eth0``` entry, something like this, the actual numbers have been replaced by xx/yy/zz etc.

So if you have an IP address, there will be numbers in the inet or inet6 lines or both. If not, then your router has not assigned you an IP address.

This would be unusual, it implies that the Ethernet HW on the Raspberry Pi isn't working, or has been specifically disabled. If you are using a new Raspbian install, and haven't made any changes, this is probably a broken ethernet chip.

OK, so the ethernet port appears to be working, but your router has not allocated your Raspberry pi an ethernet address. You need to check out your router isntructions to find out why that might be. It might be doing something called MAC address filtering, or similar which means it only allocates addresses to devices it knows about. You can use the `ifconfig` command to find the MAC address of your Raspberry Pi, it's the hexadecimal number in the form `qq:qq:qq:qq:qq:qq` on the line starting with `ether`.

So, the connection to your internal network is working OK, but you don't appear to have an internet connection. This could be a number of things.

TODO

If you are using a Pi3B+ this has a gigbit ethernet adapter, and you might be expecting to get gigabit speeds. However, the Pi cannot communicate with the ethernet chip at that sort of speed due to inrerface limitation, so you will et less than that. It would normally be expected to get up to 250-300MBits/s.

This almost certainly a flow control problem. You need to turn on flow control on your router to help with the slower speed of the Pi ethernet. It might be called pause frames or similar. Most redidential routers have flow control turned on automatically. Commercial routers will probably need it to be turned on.