Link Control
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... Link Control Protocol ...
... In order to be sufficiently versatile to be portable to a wide
variety of environments, PPP provides a Link Control Protocol
(LCP). The LCP ...
... Although the option negotiation mechanism described in this
document is specified in terms of the Link Control Protocol (LCP),
the same facilities are designed to be used by other control
protocols ...
... 80ff unused
c021 Link Control Protocol
c023 Password Authentication Protocol
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Only Link Control Protocol, authentication protocol, and link quality
monitoring packets are allowed during this phase. All other packets
...
...
A summary of the Link Control Protocol packet format is shown below.
The fields are transmitted from left to right.
...