Panasonic UF-E1, Руководство по обслуживанию

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UF-E1
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Table 6.5.2.4 PPP state transition table (detailed)
How to read the table: To the left of / is action to event, to the right of / is the state after the action. With-
out /, state transition only. Blank is no action.
Code: irc: restart, initialize counter, Zrc: restart, set counter to 0 CR: setting request, CA: setting
acknowledge, CN/ setting negate/reject TR: Termination request, TA: termination acknowledge CJ:
Code reject
Note1: Normal code rejected, Protocol rejected for NCP
Note2: Fatal rejection that makes connection impossible. (code rejection for setting request, (protocol
reject for LCP)
Note3: Load option (restart)(Donw+Up by user open)
Note4: Load option (passive) (Wait for setting request, layer will not be terminated.)
Note5: Cross-connection: Simultaneous re-send and receive. Duplicate reception of response. (Load
error, minimum log)
a. Link Dead Phase
This phase is a condition where the communication system is physically or electrically dysfunc-
tional. (For example, this is when the carrier detection (CD) of the modem is down.) When CD is up
(ON) and lines are connected, PPP shifts to link establishment phase.
Event
State No. 0 1 2 3 4 5 6 7 8 9
State Name Initial Starting Closed Stopped Closing Stopping Req-Sent Ack-Rcvd Ack-Sent Opened
Lower position Up 2 irc,
CR Trans. /6
Lower position Down 0 Layer start /1 0 1 1 1 1 Layer down /
1
Link open
→
Link OK Layer start /1 1 irc,
CR Trans. /6 3
(Note 3) 5
(Note 3) 5
(Note 3) 6 7 8 9
(Note 3)
Link close
→
Link NG 0 Layer stop /0 2 2 4 4 irc,
TR Trans. /4 irc,
TR Trans. /4 irc,
TR Trans. /4 Layer down,
irc, TR Send
/4
Time out/ Re-try counter > 0 TR Trans. /4 TA Trans. /5 CR Trans. /6 CR Trans. /6 CR Trans. /8
Time out/ Re-try counter = 0 Layer end /2 Layer end /3 Layer end /3
(Note 4)
Layer end /3
(Note 4) Layer end /3
(Note 4)
Setting request receive
(all accept) TA Send. /2 irc,
CR&CA
Send. /8 4 5 CA Send. /8 CA Send,
Layer up/9
CA Send. /8 Layer down,
CR&CA
Send. /8
Setting request receive
(part reject) TA Send. /2 irc,
CR&CN
Send. /6 4 5 CN Send. /6 CN Send. /7 CN Send. /6 Layer down,
CR&CN
Send. /6
Setting Ack receive TA Send. /2 TA Send. /3 4 5 irc/7 CN Send. /6
(Note 5) irc, Layer up/
9 Layer down,
CR Send. /6
(Note 5)
Setting negate/Reject receive TA Send. /2 TA Send. /3 4 5 irc,
CR Send. /6 CN Send. /6
(Note 5) irc,
CR Send. /8 Layer down,
CR Send. /6
(Note 5)
End request receive TA Send. /2 TA Send. /3 TA Send. /4 TA Send. /5 TA Send. /6 TA Send. /6 TA Send. /6 Layer down,
zrc, TR Send
/5
End Ack receive 2 3 Layer end /2 Layer end /3 6 6 8 Layer down,
CR Send. /6
Unknown code receive CJ Send. /2 CJ Send. /3 CJ Send. /4 CJ Send. /5 CJ Send. /6 CJ Send. /7 CJ Send. /8 CJ Send. /9
Reject receive
(Normal-Note1) 2 3 4 5 6 6 8 9
Reject receive
(Fatal-Note 2) Layer end /2 Layer end /3 Layer end /2 Layer end /3 Layer end /3 Layer end /3 Layer end /3 Layer down,
irc, TR Send
/5
Echo/Discard/ID/Remainder
receive 2 3 4 5 6 7 8 Echo
response
(Echo
request) /9