+-------+                              +-------+
              |PCC    |                              |  PCE  |
              |ingress|                              +-------+
       +------|       |                                  |
       | PCC  +-------+                                  |
       | transit| |                                      |
+------|        | |<--PCInitiate,PLSP-ID=0,PST=2,--------| PCECC LSP
|PCC   +--------+ |                                      | Initiate
|egress  |  |     |----PCRpt,PLSP-ID=2,D=1,C=1---------->| PCECC LSP
+--------+  |     |       (GOING-UP)                     |
    |       |     |                                      |
    |<-------PCInitiate,CC-ID=X,PLSP-ID=2----------------| Label
    |       |     |     C=1,O=0                          | download
    |--------PCRpt,CC-ID=X,PLSP-ID=2-------------------->| CCI
    |       |     |     Label=L1                         |
    |       |<------PCInitiate,PLSP-ID=2,----------------| Labels
    |       |     |            CC-ID=Y1,C=1,O=0          | download
    |       |     |            CC-ID=Y2,C=0,O=1,L1       | CCI
    |       |-------PCRpt,PLSP-ID=2--------------------->|
    |       |     |       CC-ID=Y1,O=0,Label=L2          |
    |       |     |       CC-ID=Y2,O=1                   |
    |       |     |<----PCInitiate,CC-ID=Z,PLSP-ID=2-----| Label
    |       |     |                C=0,O=1,L2            | download
    |       |     |-----PCRpt,CC-ID=Z,PLSP-ID=2--------->| CCI
    |       |     |                                      |
    |       |     |<---PCUpd,PLSP-ID=2,PST=2,D=1---------| PCECC LSP
    |       |     |      (UP)                            | Update