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RFC1661 - часть 12


|

TO+ | - - - - str/4 str/5

TO- | - - - - tlf/2 tlf/3

|

RCR+ | - - sta/2 irc,scr,sca/8 4 5

RCR- | - - sta/2 irc,scr,scn/6 4 5

RCA | - - sta/2 sta/3 4 5

RCN | - - sta/2 sta/3 4 5

|

RTR | - - sta/2 sta/3 sta/4 sta/5

RTA | - - 2 3 tlf/2 tlf/3

|

RUC | - - scj/2 scj/3 scj/4 scj/5

RXJ+ | - - 2 3 4 5

RXJ- | - - tlf/2 tlf/3 tlf/2 tlf/3

|

RXR | - - 2 3 4 5

Simpson [Page 12]

RFC 1661 Point-to-Point Protocol July 1994

| State

| 6 7 8 9

Events| Req-Sent Ack-Rcvd Ack-Sent Opened

------+-----------------------------------------

Up | - - - -

Down | 1 1 1 tld/1

Open | 6 7 8 9r

Close|irc,str/4 irc,str/4 irc,str/4 tld,irc,str/4

|

TO+ | scr/6 scr/6 scr/8 -

TO- | tlf/3p tlf/3p tlf/3p -

|

RCR+ | sca/8 sca,tlu/9 sca/8 tld,scr,sca/8

RCR- | scn/6 scn/7 scn/6 tld,scr,scn/6

RCA | irc/7 scr/6x irc,tlu/9 tld,scr/6x

RCN |irc,scr/6 scr/6x irc,scr/8 tld,scr/6x

|

RTR | sta/6 sta/6 sta/6 tld,zrc,sta/5

RTA | 6 6 8 tld,scr/6

|

RUC | scj/6 scj/7 scj/8 scj/9

RXJ+ | 6 6 8 9

RXJ- | tlf/3 tlf/3 tlf/3 tld,irc,str/5

|

RXR | 6 7 8 ser/9

The states in which the Restart timer is running are identifiable by

the presence of TO events. Only the Send-Configure-Request, Send-

Terminate-Request and Zero-Restart-Count actions start or re-start

the Restart timer. The Restart timer is stopped when transitioning

from any state where the timer is running to a state where the timer

is not running.

The events and actions are defined according to a message passing

architecture, rather than a signalling architecture. If an action is

desired to control specific signals (such as DTR), additional actions

are likely to be required.

[p] Passive option; see Stopped state discussion.

[r] Restart option; see Open event discussion.

[x] Crossed connection; see RCA event discussion.

Simpson [Page 13]

RFC 1661 Point-to-Point Protocol July 1994

4.2. States

Following is a more detailed description of each automaton state.

Initial

In the Initial state, the lower layer is unavailable (Down), and




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