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OSN1800V equipment supports MPLS-TP (MPLS-Transport Profile)/PWE3 and other technologies, and can flexibly realize pure packet mode or Hybrid mixed-mode networking.WDM equipment adopts packet transmission technology, supports FE, GE, 10GE service access, realizes efficient statistical multiplexing of data services, and effectively reduces the transmission cost of each bit; at the same time, it inherits the advantages of SDH to provide Native bearer for TDM services, and effectively ensures high quality of voice service transmission. WDM equipment adopts packet transmission technology, supports FE, GE and 10GE service access, realizes efficient statistical multiplexing of data services, and effectively reduces the transmission cost per bit.
OSN1800V Ethernet Service Packet Modeling
MEF, ITU-T and IETF standardization organizations have defined their own Layer 2 Ethernet service models. The service models defined by each standardization organization are different in name but similar in nature, and WDM devices support all of the following service models. Table 1 gives the correspondence between the models and their forms of transport tunneling and service multiplexing.
|
MEF model |
ITU-T model |
IETF model |
Transport tunneling (network side) |
Service multiplexing (access side) |
|---|---|---|---|---|
|
E-Line |
EPL |
E-Line |
Physical Isolation |
Physical Isolation |
|
EVPL |
-VLAN |
VLAN |
Physical Isolation |
|
|
VPWS |
MPLS |
|||
|
-Physical Isolation |
Physical Isolation |
VLAN |
||
|
-VLAN |
VLAN |
|||
|
VPWS |
MPLS |
|||
|
E-LAN |
EPLAN |
E-LAN |
Physical Isolation |
Physical Isolation |
|
EVPLAN |
-Physical Isolation |
Physical Isolation |
VLAN |
|
|
-VLAN |
VLAN |
|||
|
VPLS |
MPLS |
- The E-Line/E-LANMEF standards organization defines Layer 2 Ethernet services as point-to-point based E-Line services and multipoint-to-multipoint E-LAN services. VPWS/VPLSIETF standards organization defines L2VPNs as mainly consisting of two methods, VPWS and VPLS.VPWS is used to provide Layer 2 point-to-point services, and VPLS is used to in the WAN to VPLS is used to simulate a local area network (LAN) in a wide area network (WAN).
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