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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2023-05-12 18:02:47 +08:00
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7. Some weird bugs in Vivado, leading to not working SFP on certain combinations of builds and Kaslis
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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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2023-05-12 18:02:47 +08:00
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2. See the SFP0 light
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3. UART logs. TODO here is a link to ways to obtain them
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4. `nmap` and `arp` to scan your network to help your Kasli get discovered. May be restricted in your network.
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5. Become a router and capture all the packets when your Kasli tries to connect to the network.
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