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RFC1661 - часть 28


Configuration Options listed in the Configure-Reject.

A summary of the Configure-Reject packet format is shown below. The

fields are transmitted from left to right.

0 1 2 3

0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

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

| Code | Identifier | Length |

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

| Options ...

+-+-+-+-+

Code

4 for Configure-Reject.

Identifier

The Identifier field is a copy of the Identifier field of the

Configure-Request which caused this Configure-Reject.

Options

The Options field is variable in length, and contains the list of

zero or more Configuration Options that the sender is rejecting.

All Configuration Options are always rejected simultaneously.

Simpson [Page 32]

RFC 1661 Point-to-Point Protocol July 1994

5.5. Terminate-Request and Terminate-Ack

Description

LCP includes Terminate-Request and Terminate-Ack Codes in order to

provide a mechanism for closing a connection.

An implementation wishing to close a connection SHOULD transmit a

Terminate-Request. Terminate-Request packets SHOULD continue to

be sent until Terminate-Ack is received, the lower layer indicates

that it has gone down, or a sufficiently large number have been

transmitted such that the peer is down with reasonable certainty.

Upon reception of a Terminate-Request, a Terminate-Ack MUST be

transmitted.

Reception of an unelicited Terminate-Ack indicates that the peer

is in the Closed or Stopped states, or is otherwise in need of

re-negotiation.

A summary of the Terminate-Request and Terminate-Ack packet formats

is shown below. The fields are transmitted from left to right.

0 1 2 3

0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

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

| Code | Identifier | Length |

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

| Data ...

+-+-+-+-+

Code

5 for Terminate-Request;




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