The MPLS WG Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] [IP-Optical] RE: GMPLS - Hierarchies
Maarten....hope my last mail helped on this....some additional comment in-line: <snipped> > Up to now, tandem connection trails are viewed as being additional > monitoring overhead/OAM within the same layer network as the main > signal. > > E.g. VC-4 and VC-4 Tandem Connection (TC-4), ATM VP end to end > connection and ATM VP segment, or ODU1 Path and ODU1 Tandem > Connection. NH=> Correct. > But within GMPLS with its "generic LSP" concept, we could view a VT1.5 > as being a tandem connection LSP of the DS1 LSP for connection setup. > Similarly, we could view MS64, RS64, ODU2, OTU2 and OCh as tandem > connection LSPs of the VC-4-64c LSP for connection setup. NH=> No. Differentiate user and control planes. See my last mail I tried really hard to make this distinction clear. > I believe that we are already doing something like this in SDH; e.g. the > set up of a E1 (2 Mbit/s) circuit is realised by means of setup of a > VC-12 trail. NH=> No. The E1 and VC12 are 2 distinct layer networks and both have their own TT OH. <snipped> |
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