Connected: An Internet Encyclopedia
3.2. Phase Diagram

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3.2. Phase Diagram

3.2. Phase Diagram

In the process of configuring, maintaining and terminating the point-to-point link, the PPP link goes through several distinct phases which are specified in the following simplified state diagram:

   +------+        +-----------+           +--------------+
   |      | UP     |           | OPENED    |              | SUCCESS/NONE
   | Dead |------->| Establish |---------->| Authenticate |--+
   |      |        |           |           |              |  |
   +------+        +-----------+           +--------------+  |
      ^               |                        |             |
      |          FAIL |                   FAIL |             |
      +<--------------+             +----------+             |
      |                             |                        |
      |            +-----------+    |           +---------+  |
      |       DOWN |           |    |   CLOSING |         |  |
      +------------| Terminate |<---+<----------| Network |<-+
                   |           |                |         |
                   +-----------+                +---------+

Not all transitions are specified in this diagram. The following semantics MUST be followed.


Next: 3.3. Link Dead (physical-layer not ready)

Connected: An Internet Encyclopedia
3.2. Phase Diagram