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RFC1661 - часть 17


Request or Terminate-Request packet to be retransmitted.

The TO- event indicates that the Restart counter is not greater

than zero, and no more packets need to be retransmitted.

Receive-Configure-Request (RCR+,RCR-)

This event occurs when a Configure-Request packet is received from

the peer. The Configure-Request packet indicates the desire to

open a connection and may specify Configuration Options. The

Configure-Request packet is more fully described in a later

section.

The RCR+ event indicates that the Configure-Request was

acceptable, and triggers the transmission of a corresponding

Configure-Ack.

The RCR- event indicates that the Configure-Request was

Simpson [Page 18]

RFC 1661 Point-to-Point Protocol July 1994

unacceptable, and triggers the transmission of a corresponding

Configure-Nak or Configure-Reject.

Implementation Note:

These events may occur on a connection which is already in the

Opened state. The implementation MUST be prepared to

immediately renegotiate the Configuration Options.

Receive-Configure-Ack (RCA)

This event occurs when a valid Configure-Ack packet is received

from the peer. The Configure-Ack packet is a positive response to

a Configure-Request packet. An out of sequence or otherwise

invalid packet is silently discarded.

Implementation Note:

Since the correct packet has already been received before

reaching the Ack-Rcvd or Opened states, it is extremely

unlikely that another such packet will arrive. As specified,

all invalid Ack/Nak/Rej packets are silently discarded, and do

not affect the transitions of the automaton.

However, it is not impossible that a correctly formed packet

will arrive through a coincidentally-timed cross-connection.

It is more likely to be the result of an implementation error.

At the very least, this occurance SHOULD be logged.

Receive-Configure-Nak/Rej (RCN)

This event occurs when a valid Configure-Nak or Configure-Reject

packet is received from the peer. The Configure-Nak and




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