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Church Of The
Swimming Elephant

5.2. Configure-Ack Connected: An Internet Encyclopedia
5.2. Configure-Ack

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5.2. Configure-Ack

5.2. Configure-Ack


If every Configuration Option received in a Configure-Request is recognizable and all values are acceptable, then the implementation MUST transmit a Configure-Ack. The acknowledged Configuration Options MUST NOT be reordered or modified in any way.

On reception of a Configure-Ack, the Identifier field MUST match that of the last transmitted Configure-Request. Additionally, the Configuration Options in a Configure-Ack MUST exactly match those of the last transmitted Configure-Request. Invalid packets are silently discarded.

A summary of the Configure-Ack 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 ...


2 for Configure-Ack.


The Identifier field is a copy of the Identifier field of the Configure-Request which caused this Configure-Ack.


The Options field is variable in length, and contains the list of zero or more Configuration Options that the sender is acknowledging. All Configuration Options are always acknowledged simultaneously.

Next: 5.3. Configure-Nak

Connected: An Internet Encyclopedia
5.2. Configure-Ack


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