[原创]PPP Protocol(RFC1661)

wicony

1. Introduction .......................................... 1
1.1 Specification of Requirements ................... 2
1.2 Terminology ..................................... 3
2. PPP Encapsulation ..................................... 4
3. PPP Link Operation .................................... 6
3.1 Overview ........................................ 6
3.2 Phase Diagram ................................... 6
3.3 Link Dead (physical-layer not ready) ............ 7
3.4 Link Establishment Phase ........................ 7
3.5 Authentication Phase ............................ 8
3.6 Network-Layer Protocol Phase .................... 8
3.7 Link Termination Phase .......................... 9
4. The Option Negotiation Automaton ...................... 11
4.1 State Transition Table .......................... 12
4.2 States .......................................... 14
4.3 Events .......................................... 16
4.4 Actions ......................................... 21
4.5 Loop Avoidance .................................. 23
4.6 Counters and Timers ............................. 24
5. LCP Packet Formats .................................... 26
5.1 Configure-Request ............................... 28
5.2 Configure-Ack ................................... 29
5.3 Configure-Nak ................................... 30
5.4 Configure-Reject ................................ 31
5.5 Terminate-Request and Terminate-Ack ............. 33
5.6 Code-Reject ..................................... 34
5.7 Protocol-Reject ................................. 35
5.8 Echo-Request and Echo-Reply ..................... 36
5.9 Discard-Request ................................. 37
6. LCP Configuration Options ............................. 39
6.1 Maximum-Receive-Unit (MRU) ...................... 41
6.2 Authentication-Protocol ......................... 42
6.3 Quality-Protocol ................................ 43
6.4 Magic-Number .................................... 45
6.5 Protocol-Field-Compression (PFC) ................ 48
6.6 Address-and-Control-Field-Compression (ACFC)
SECURITY CONSIDERATIONS ...................................... 51
REFERENCES ................................................... 51
ACKNOWLEDGEMENTS ............................................. 51
CHAIR'S ADDRESS .............................................. 52
EDITOR'S ADDRESS ............................................. 52
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