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Network Setup
Troubleshoot

# Fixing Internet Problems

If your classroom network is not working, follow these steps to fix common issues. If you still have trouble, check the Wi-Fi Setup Guide to ensure everything is connected correctly.

### Quick Check List

### 1. Restart Devices

Power off your routers and the server (main) computer, then turn them back on.

### 2. Check Physical Connections

- Ensure the grey or white network cables are plugged in firmly at both ends.
- Confirm the Server machine has a solid cable connection to the main router.
- Look at the router lights to ensure they are on and blinking.

### 3. Ensure a Single Server

Verify that only one computer on the network is set as the `server` in `tl-sys-configure`. Having two servers will cause the network to fail.

### 4. Check Student Configuration

On a student computer that cannot connect, run `tl-sys-configure` and confirm:

1. Role: Set to `client`.
2. Wi-Fi Name: Set to the correct network name.

### 5. Check Server Status

On the Server computer, check if the “address server” (DHCP) is running. Open the terminal and type:

    rsv status dhcpd4

> Expected Result: The status should show `run`. If it shows `down`, type `sudo rsv restart dhcpd4`.

### Common Problems & Solutions

Problem | Quick Fix
--- | ---
No Wi-Fi visible | Check if the Server and Router are powered on and the Server’s own Wi-Fi is disabled.
“Limited Connection” | This usually means the address server is not working. See Step 5 above.
Very Slow Network | Too many computers on Wi-Fi. Connect more machines using grey/white cables.

Focus Mode

This page has the side menu hidden to help you focus on the fixing steps while working in a busy classroom.