Nortel Optical Multiservice Edge 6130 Planning Manual page 74

6-14 OAM&P description
•
All services (Ethernet, E1/DS1 and E3/DS3) are mapped to the appropriate VC
containers. The OME6130 uses Generic Framing Procedure (GFP) as its
standards based SDH mapping for Ethernet services.
Generic Framing Procedure
GFP is an ITU standard (G.7041) which describes a flexible mapping
technique for transparent transport of multiple protocols in SDH. GFP
provides an efficient mechanism for Ethernet data services to be transported
over an SDH network via efficiently mapping varying client signals into VC
containers with a virtual concatenation group (VCG). OME6130 supports:
•
In GFP-F, idle frames are inserted as necessary to fill the transport payload.
Multiple GFP-F frames can be aggregated in a single SDH payload.
Table 6-5
type supported in OME6130 Release 1.0.
Table 6-5
OME6130 service mapping
Service Mapping
STM-1 • VC11, VC12, VC3, VC4
STM-4 • VC11, VC12, VC3, VC4
10/100BT • SDH mode:
L1
— GFP-F to VC12, and VC3
Ethernet
— GFP-F to VC12-nv (n=1 to 63)
and VC3-nv (n=1 to 3)
Optical Multiservice Edge 6130
bandwidth management models:
— bidirectional connection type
— unidirectional connection type
— hair-pinning
— drop and continue
Note: Only bidirectional connection type is supported for WAN ports
corresponding to the 10/100BT Ethernet and Gigabit Ethernet ports.
Framed-mapped GFP (GFP-F), which maps one frame or packet of client
signal in one GFP frame. GFP-F processes client signal data streams on a
protocol data unit (PDU) basis and maps these streams into GFP-F frames
one packet at a time. GFP-F is recommended for Ethernet services as it
provides flow control capability and performance monitoring.
provides a summary of the service mappings and interconnection
NT6Q92MA Rel 1.0 Iss 1 Standard September 2006
Interconnection type
• non-concatenated at VC11, VC12, VC3, VC4 level
• non-concatenated at VC11, VC12, VC3, VC4 level
• SDH mode:
— non-concatenated at VC12, and VC3 level
— virtual concatenation at VC12-nv (n=1 to 63)
and VC3-nv (n=1 to 3) for the VCG