c9515b4f50
Add information about PPP into Zephyr documentation. Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
28 lines
853 B
ReStructuredText
28 lines
853 B
ReStructuredText
.. _ppp:
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Point-to-Point Protocol (PPP) Support
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#####################################
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.. contents::
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:local:
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:depth: 2
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Overview
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********
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`Point-to-Point Protocol
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<https://en.wikipedia.org/wiki/Point-to-Point_Protocol>`_ (PPP) is a data link
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layer (layer 2) communications protocol used to establish a direct connection
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between two nodes. PPP is used over many types of serial links since IP packets
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cannot be transmitted over a modem line on their own, without some data link
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protocol.
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In Zephyr, each individual PPP link is modelled as a network interface. This
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is similar to how Linux implements PPP.
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PPP support must be enabled at compile time by setting option
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:option:`CONFIG_NET_PPP` and :option:`CONFIG_NET_L2_PPP`.
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See also the :zephyr_file:`samples/net/sockets/echo_server/overlay-ppp.conf`
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file for configuration option examples.
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