Generalized MPLS - Switching Layers

AAMS, LB, JMS -

10

GMPLS Signalling uniformly address the issues of LSP establishment (setup) /teardown (delete) through different switching (i.e. networking) layers

=> GMPLS ? “optical” and “optical” ? GMPLS (? common control plane)

• Classical Packet LSPs in the MPLS switching layer terminating at PSC interfaces (LSR I/f)

• Lambda LSP (L-LSP) corresponding to optical channel switching layer terminating at OXC/PXC (Label=Wavelength, OXC=E-O-E Matrix or PXC= O-O Matrix with LSC I/f

• Fiber LSP corresponding to fiber switching layer terminating at fiber cross-connects interconnected by fiber bundles (Label=Fiber, Fiber Cross-Connect with FSC interfaces)

Packet (IP/MPLS)

Switching Layer

• SDH/Sonet or Ethernet used as FRAMING (Adaptation only) ? no TDM LSP defined

Wavelength

Switching Layer

*

Fiber (Spatial)

Switching Layer

Fiber LSP

Lambda LSP

Packet LSP

*

The wavelength-switching layer can also include waveband switching

Framing

• TDM LSPs corresponding to STS SPE/ HOVC switching layer terminating at OXC (Label=Sub-Channel, OXC=E-O with TDM I/f and DWDM system)

TDM Switching

GMP L S

TDM LSP

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