ITU-T Rec. G.8110.1/Y.1370.1 (11/2006) iii
CONTENTS
Page
1 Scope ............................................................................................................................ 1
2 References..................................................................................................................... 2
3 Definitions .................................................................................................................... 2
4 Abbreviations and acronyms ........................................................................................ 4
5 Conventions.................................................................................................................. 4
6 Functional architecture of T-MPLS networks.............................................................. 5
6.1 General ........................................................................................................... 5
6.2 T-MPLS network layered structure................................................................ 6
6.3 T-MPLS layer network................................................................................... 6
6.4 T-MPLS layer network partitioning............................................................... 8
6.5 T-MPLS label behaviour................................................................................ 8
6.6 Penultimate hop popping (PHP)..................................................................... 8
6.7 LSP tunnels..................................................................................................... 8
6.8 T-MPLS hierarchies ....................................................................................... 8
7 Server/client associations.............................................................................................. 9
7.1 TM/client adaptation ...................................................................................... 9
7.2 TM/TM adaptation ......................................................................................... 9
7.3 Server/TM adaptation..................................................................................... 10
8 T-MPLS network management .................................................................................... 12
9 T-MPLS survivability techniques................................................................................. 12
9.1 Protection techniques...................................................................................... 12
9.2 Network restoration........................................................................................ 12
10 T-MPLS and support of the Diff-Serv Architecture..................................................... 12
10.1 T-MPLS TTL behaviour................................................................................. 13
10.2 T-MPLS EXP behaviour ................................................................................ 13
11 T-MPLS signalling communication network ............................................................... 15
11.1 Shared trail SCN links.................................................................................... 15
11.2 Shared hop SCN links .................................................................................... 17
11.3 Independent SCN links................................................................................... 18
12 T-MPLS management communication network........................................................... 18
Appendix I – Functional model for describing PWE3 and MPLS network interworking....... 19
Appendix II – Support of IP/MPLS LSR-based networks by T-MPLS networks
supporting point-to-point Ethernet services ................................................................. 25
Appendix III – Platform and interface label spaces................................................................. 27
Bibliography............................................................................................................................. 28
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