Linux › Section I · Your network and its configuration › Topic I.6
Ethernet and kernel network interfaces
IP addresses and routes are software ideas, but every packet must finally leave through real hardware. The Linux kernel joins the two through network interfaces, and learning to read their names and states tells you at a glance whether a problem is in the cable or in the configuration.
In this topic
- Ethernet underneath
- Frames stay on their own network
- Kernel network interfaces
- Predictable interface names
- Worked example: decoding names
- Reading ip link
- Worked example: is it the cable?
- Hardware details: ethtool and statistics
- Common mistakes to avoid
- Key takeaways
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