2023-05-11 17:32:46 +08:00
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# Networking
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This page should help solving common network/related problems,
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a-la `I can't connect, please help`.
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## Common problems
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1. `device_db.py` has misleading `core_addr` address.
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2. PC and the crate are in different subnets. They should be in the same network. Also you may want to directly attach the Kasli to the PC.
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3. Network restrictions/problems on your router, either by IP, MAC, protocols or anything else.
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4. Wrong configuration of the Kasli. Change IP or MAC address to correspond your network. For ARTIQ-8, add
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network mask to the `ip` setting on Kasli, like `192.168.1.75/24`.
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5. Incompatible Ethernet cables/SFP RJ45. Try different cables and SFP adapters.
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We usually test them with CAT6 cables, but lower categories should be supported too.
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6. SFP or Ethernet are not pushed til the end.
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2023-05-16 10:56:11 +08:00
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7. Some weird bugs in Vivado, leading to not working SFP on certain combinations of builds and Kaslis (very rare)
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8. Running configured for external reference Kasli without external reference clock signal
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9. Using legacy firmware with newer hardware. ARTIQ-6 doesn't support Kasli v2.0.2
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2023-05-11 17:32:46 +08:00
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## Ways to diagnose
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1. `ping` the device. If destination is unreachable, than it is either didn't connect to the network
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or connected to different address. If the packets just do not respond then it is not as clear, we cannot know all the truth.
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2023-05-16 10:56:11 +08:00
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2. See the SFP0 LED
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3. See the ERR LED
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2023-06-26 15:43:11 +08:00
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4. [UART logs](uart_logs.md)
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2023-05-16 10:56:11 +08:00
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5. `nmap` and `arp` to scan your network to help your Kasli get discovered. May be restricted in your network.
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2023-08-01 17:36:33 +08:00
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6. Directly connect your Kasli to the PC via Ethernet and set up networking on the PC: `ip addr change 192.168.1.0/24 dev eth0`
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7. Become a router and capture all the packets when your Kasli tries to connect to the network.
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