The MSTP technology based on SDH has become the main choice for operators to build multi-service metropolitan transport networks. With the continuous development of technology and the emergence of new businesses, MSTP has produced many new changes and trends. On the one hand, the optimization and improvement around the data service has prompted a series of new technologies such as LCAS, GFP, MPLS, and RPR to continue to be commercialized; on the other hand, how to combine with the upcoming large-scale 3G transmission network construction, how to provide better 3G services. The transmission channel has become a key issue for MSTP. From the perspective of the development trend of optical networks, the introduction of control planes in optical transport networks, the rapid provision of new services through ASON and the end-to-end scheduling and protection of services will be an important direction for the development of MSTP.
As the technical leader of China's optical communications, Fiberhome Communications has launched a new generation of metro transmission Citrans series MSTP equipment with its deep technical accumulation and strong R&D capabilities. After many optimizations and improvements, the device has greatly enhanced the carrying capacity of data services, and can efficiently carry various service networks such as PSTN/GSM/CDMA, 3G, IP/MEN, FR/DDN, etc. The smooth evolution of the first generation optical network. At present, the Citrans series has been widely used in the construction of metropolitan area networks of major operators in China, and has performed outstandingly in the large-scale MSTP test of China Telecom and China Mobile, and entered the first echelon recommended by operators.
Old tree new teeth, MSTP glow infinitely vital
At present, IP-based data services are growing rapidly. Although the current data traffic is still small, and the proportion of operating revenue is small, no one can deny that data services will become the dominant network business in the future. How to effectively support these data services has become a key issue for operators to invest in optical transmission networks. MSTP has data support functions, but it is only suitable for the development of a small amount of data services in the initial stage. It has limited processing capacity for large-capacity and large-grain data services, and how to achieve fair distribution of bandwidth, end-to-end QOS guarantee, dynamic bandwidth adjustment, and how to A series of problems such as increasing the utilization of bandwidth have also become issues to be solved in the development of MSTP.
Driven by technology development and business applications, FiberHome has performed an excellent and effective treatment of Citrans series MSTP equipment in terms of architecture, security, packet service encapsulation, dynamic bandwidth matching, QOS guarantee, and adaptability of next-generation networks. , greatly enhanced the transmission capacity of data services, so that MSTP technology shines infinite vitality and vitality. The VC virtual cascading technology is used to implement the matching between the Ethernet service bandwidth and the SDH virtual container, which greatly improves the bandwidth utilization. The LCAS makes the bandwidth configuration more flexible and free, and can be dynamic without interrupting the service. Damage adjusts the transmission bandwidth and responds to various user needs in time; GFP improves the efficiency of data encapsulation, is more robust and reliable, and multiplexing multiple physical ports to the same channel reduces the need for bandwidth, supports point-to-point and ring network structures; Support embedded MPLS function, can achieve VLAN address expansion, provide circuit end-to-end Qos guarantee, facilitate the introduction of new Ethernet services (such as L2VPN) and flexible control of bandwidth particles; the successive applications of these new technologies make Campfire Citrans series MSTP devices are more free, flexible, and secure when transmitting data services. Reliability and service scalability are also very good.
The introduction of any new technology must consider the interconnection and intercommunication of the network. Only when interoperating with other vendors can the real-scale application phase be entered. Fiberhome Communications pays great attention to the interoperability of new technologies and has achieved gratifying results. In 2003, in China Telecom's MSTP test, Campfire successfully realized the interconnection between GFP/LCAS and other vendors. GFP is the standard way for data services to be mapped to SDH/OTN. If the encapsulation formats of different vendors can communicate with each other, it means that GE or FE Ethernet services can span different vendors' SDH networks, providing a larger organization for Layer 2 networks. basis. In 2005, the high-end equipment Citrans 750 of Fiberhome Communications successfully passed the MSTP intercommunication test of embedded MPLS organized by China Telecom, becoming one of the two most comprehensive manufacturers in the test. The success of this series of intercommunication tests not only indicates that the MSTP technology is at the domestic leading level, but also further promotes the development of MSTP technology, laying the foundation for reducing the overall investment cost of the network and improving the flexibility and robustness of the network.
Dancing in harmony with 3G, MSTP applications go deeper
3G represents the development direction of mobile communication in the future, and is an inevitable trend in the development of mobile users and mobile services. Therefore, when constructing a transmission network, it is necessary to consider the transmission networking requirements of 3G systems. From the perspective of business needs, 3G will coexist in the development of multiple services, especially high-speed data will account for a large proportion. The uncertainty and complexity of data traffic flow makes it difficult for TDM technology to provide a carrier for 3G services. An efficient and reliable platform. Although ATM technology can well support packet services, the cost of transmitting TDM services is high and the 3G system itself has ATM switching capabilities. Although IP technology is suitable for the needs of data services, QoS and other issues have not been fully solved and cannot meet the needs of high-level services. Therefore, based on SDH, MSTP technology that can realize unified transmission of TDM/ATM/IP integrated services will shoulder the heavy responsibility of 3G network transmission. The "harmonious dance" between MSTP and 3G system is the latest direction of MSTP technology development, which will further promote the in-depth application of MSTP technology.
In the face of the climax of the upcoming 3G mobile communication, the Citrans series of MSTP devices launched by FiberHome Communications provide low cost, high efficiency and high bandwidth for the construction of 3G networks with its excellent integration and powerful transmission capability. The ideal platform. The device provides a unique optimized processing solution for the development characteristics and service requirements of the 3G network, which greatly reduces the investment cost, improves the reliability of the system, and fully adapts to the development needs of various services in the network.
From the perspective of 3G base station capacity, although the initial capacity of the network is not large, in the long run, the rapid development of new services such as mobile data services and broadband multimedia will bring about a sharp increase in bandwidth demand. Therefore, MSTP equipment must Low-level processing power and scalability. The Citrans series of MSTP devices feature STM-1, STM-4, STM-16, and STM-64 smooth upgrades, providing on-demand scalability and exceptional scalability, eliminating the need for 3G capacity growth.
In terms of service nature, 3G services are aggregated from base stations to mobile switching centers. The service traffic is centralized. It is more suitable for channel protection. Citrans series MSTP devices can provide channel protection and multiplex section protection. Complete protection measures provide high availability for the construction of 3G networks.
In addition, it also has optimized multi-service bearer capability, strong networking capability and high reliability. In addition to supporting traditional voice services, it also supports 10M/100Mb/s/1000Mb/s full-rate Ethernet services, ATM services, etc. The embedded functions of embedded Ethernet Layer 2 switching, low-order virtual concatenation, LCAS, VLAN, MPLS, RPR, and ATM services greatly optimize the processing capability of data services. With the continuous development of technology, the later 3G core will gradually evolve from ATM to IP, and the Citrans series MSTP devices can also adapt to this change very flexibly.
The harmonious dance between MSTP and 3G is driven by factors such as business, application, cost and competition. It can be foreseen that with the gradual development of 3G transmission networks, MSTP will continue to be deeply applied as the best bearer platform. FiberHome Communications will continue to focus on 3G business needs and development trends, and strive to provide advanced and mature solutions and quality services to ensure that operators win the initiative in the 3G competition.
Introduce intelligent engine to smoothly evolve to next-generation optical networks
The MSTP technology featuring multi-service bearer has been fully recognized by operators and has been scaled up in the construction of optical transport networks. After the IP service becomes the main service of the network, the uncertainty and unpredictability of the IP traffic will become more and more urgent for the dynamic allocation of the network bandwidth. The network must have the real-time dynamic configuration capability, that is, the intelligent optical switching capability. Therefore, the introduction of intelligent features in the existing optical transport network, especially in combination with ASON technology, has become an inevitable trend in the evolution of MSTP networks to next-generation optical networks.
ASON is the key to the continued development of next-generation optical networks. By introducing intelligent features to enhance the control plane, it can greatly enhance the survivability, scalability and flexibility of optical transport networks, speed up the configuration of circuits, and provide higher bandwidth utilization. Dynamic bandwidth allocation on demand and multiple service levels are an important part of the optical transport network evolution strategy. At present, major operators and manufacturers have paid extensive attention to ASON technology. China Telecom, China Mobile, China Unicom and other domestic operators have successively conducted large-scale ASON equipment testing to understand the technical level of ASON equipment of various manufacturers. Constantly promote the development of ASON technology in the direction of practical use. It is worth mentioning that in July 2004, in the test of ASON equipment organized by China Mobile, Fiberhome Communications as one of the only two domestic manufacturers to participate in the test, successfully passed various tests, its FonsWeaver series The performance of the equipment is excellent and has been well received by the bureau. The success of this test fully demonstrates that Fiberhome's technical strength in the field of intelligent optical networks has reached the international leading level.
As the national “10th Five-Year†863 project—the “ASON Automatically Switched Optical Network Node Equipment Development and System Experimentâ€, Fiberhome Communications has been paying close attention to relevant international standards since the beginning of 2000, and is committed to ASON equipment development and existing traditions. In the research on the smooth evolution of the next-generation intelligent optical network ASON, the network has been the first to introduce the commercial ASON system FonsWeaver equipment in the industry, which lays a solid foundation for the smooth evolution of traditional optical networks to intelligent optical networks. The device is characterized by large capacity, high density, high reliability, and is supported by SDH/MSTP. It can provide various strict non-blocking crossover matrices of 640G/320G/160G capacity, and supports smooth upgrade to 2.56T. Ethernet interface, ATM interface, and IMA interface, support Ethernet Layer 2 switching, VLAN nesting, RSTP, MPLS, RPR, low-level virtual concatenation, LCAS, etc., greatly optimize data service and 3G service processing, etc. .
In response to the smooth evolution of existing traditional networks to intelligent optical networks, FiberHome Communications has introduced a fusion of Fonsweaver intelligent optical network solutions. The scheme is an effective unification of the transport network and the service network. It adopts an overlapping network model. The ASON network can directly provide SDH services, OTN services, optical wavelength services, 10/100M, Ethernet services, and ATMs through the interface and signaling. Service and SAN services can help operators provide differentiated services for different needs of users, effectively improve the overall competitiveness of operators, reduce network investment costs and operating costs, and enhance network survivability.
In recent years, MSTP technology has been rapidly developed by market applications, from fully integrating LCAS, GFP, MPLS, RPR and other new technologies to harmonious dance with 3G, and then to the smooth evolution of next-generation optical networks, MSTP welcomes It has come again and again to innovate and continue to mature and grow in innovation. It is believed that with the increasing demand of business, operators' deep exploration of MSTP technology and continuous improvement of industry standards, MSTP will surely usher in a broader development space in the future.
As the technical leader of China's optical communications, Fiberhome Communications has launched a new generation of metro transmission Citrans series MSTP equipment with its deep technical accumulation and strong R&D capabilities. After many optimizations and improvements, the device has greatly enhanced the carrying capacity of data services, and can efficiently carry various service networks such as PSTN/GSM/CDMA, 3G, IP/MEN, FR/DDN, etc. The smooth evolution of the first generation optical network. At present, the Citrans series has been widely used in the construction of metropolitan area networks of major operators in China, and has performed outstandingly in the large-scale MSTP test of China Telecom and China Mobile, and entered the first echelon recommended by operators.
Old tree new teeth, MSTP glow infinitely vital
At present, IP-based data services are growing rapidly. Although the current data traffic is still small, and the proportion of operating revenue is small, no one can deny that data services will become the dominant network business in the future. How to effectively support these data services has become a key issue for operators to invest in optical transmission networks. MSTP has data support functions, but it is only suitable for the development of a small amount of data services in the initial stage. It has limited processing capacity for large-capacity and large-grain data services, and how to achieve fair distribution of bandwidth, end-to-end QOS guarantee, dynamic bandwidth adjustment, and how to A series of problems such as increasing the utilization of bandwidth have also become issues to be solved in the development of MSTP.
Driven by technology development and business applications, FiberHome has performed an excellent and effective treatment of Citrans series MSTP equipment in terms of architecture, security, packet service encapsulation, dynamic bandwidth matching, QOS guarantee, and adaptability of next-generation networks. , greatly enhanced the transmission capacity of data services, so that MSTP technology shines infinite vitality and vitality. The VC virtual cascading technology is used to implement the matching between the Ethernet service bandwidth and the SDH virtual container, which greatly improves the bandwidth utilization. The LCAS makes the bandwidth configuration more flexible and free, and can be dynamic without interrupting the service. Damage adjusts the transmission bandwidth and responds to various user needs in time; GFP improves the efficiency of data encapsulation, is more robust and reliable, and multiplexing multiple physical ports to the same channel reduces the need for bandwidth, supports point-to-point and ring network structures; Support embedded MPLS function, can achieve VLAN address expansion, provide circuit end-to-end Qos guarantee, facilitate the introduction of new Ethernet services (such as L2VPN) and flexible control of bandwidth particles; the successive applications of these new technologies make Campfire Citrans series MSTP devices are more free, flexible, and secure when transmitting data services. Reliability and service scalability are also very good.
The introduction of any new technology must consider the interconnection and intercommunication of the network. Only when interoperating with other vendors can the real-scale application phase be entered. Fiberhome Communications pays great attention to the interoperability of new technologies and has achieved gratifying results. In 2003, in China Telecom's MSTP test, Campfire successfully realized the interconnection between GFP/LCAS and other vendors. GFP is the standard way for data services to be mapped to SDH/OTN. If the encapsulation formats of different vendors can communicate with each other, it means that GE or FE Ethernet services can span different vendors' SDH networks, providing a larger organization for Layer 2 networks. basis. In 2005, the high-end equipment Citrans 750 of Fiberhome Communications successfully passed the MSTP intercommunication test of embedded MPLS organized by China Telecom, becoming one of the two most comprehensive manufacturers in the test. The success of this series of intercommunication tests not only indicates that the MSTP technology is at the domestic leading level, but also further promotes the development of MSTP technology, laying the foundation for reducing the overall investment cost of the network and improving the flexibility and robustness of the network.
Dancing in harmony with 3G, MSTP applications go deeper
3G represents the development direction of mobile communication in the future, and is an inevitable trend in the development of mobile users and mobile services. Therefore, when constructing a transmission network, it is necessary to consider the transmission networking requirements of 3G systems. From the perspective of business needs, 3G will coexist in the development of multiple services, especially high-speed data will account for a large proportion. The uncertainty and complexity of data traffic flow makes it difficult for TDM technology to provide a carrier for 3G services. An efficient and reliable platform. Although ATM technology can well support packet services, the cost of transmitting TDM services is high and the 3G system itself has ATM switching capabilities. Although IP technology is suitable for the needs of data services, QoS and other issues have not been fully solved and cannot meet the needs of high-level services. Therefore, based on SDH, MSTP technology that can realize unified transmission of TDM/ATM/IP integrated services will shoulder the heavy responsibility of 3G network transmission. The "harmonious dance" between MSTP and 3G system is the latest direction of MSTP technology development, which will further promote the in-depth application of MSTP technology.
In the face of the climax of the upcoming 3G mobile communication, the Citrans series of MSTP devices launched by FiberHome Communications provide low cost, high efficiency and high bandwidth for the construction of 3G networks with its excellent integration and powerful transmission capability. The ideal platform. The device provides a unique optimized processing solution for the development characteristics and service requirements of the 3G network, which greatly reduces the investment cost, improves the reliability of the system, and fully adapts to the development needs of various services in the network.
From the perspective of 3G base station capacity, although the initial capacity of the network is not large, in the long run, the rapid development of new services such as mobile data services and broadband multimedia will bring about a sharp increase in bandwidth demand. Therefore, MSTP equipment must Low-level processing power and scalability. The Citrans series of MSTP devices feature STM-1, STM-4, STM-16, and STM-64 smooth upgrades, providing on-demand scalability and exceptional scalability, eliminating the need for 3G capacity growth.
In terms of service nature, 3G services are aggregated from base stations to mobile switching centers. The service traffic is centralized. It is more suitable for channel protection. Citrans series MSTP devices can provide channel protection and multiplex section protection. Complete protection measures provide high availability for the construction of 3G networks.
In addition, it also has optimized multi-service bearer capability, strong networking capability and high reliability. In addition to supporting traditional voice services, it also supports 10M/100Mb/s/1000Mb/s full-rate Ethernet services, ATM services, etc. The embedded functions of embedded Ethernet Layer 2 switching, low-order virtual concatenation, LCAS, VLAN, MPLS, RPR, and ATM services greatly optimize the processing capability of data services. With the continuous development of technology, the later 3G core will gradually evolve from ATM to IP, and the Citrans series MSTP devices can also adapt to this change very flexibly.
The harmonious dance between MSTP and 3G is driven by factors such as business, application, cost and competition. It can be foreseen that with the gradual development of 3G transmission networks, MSTP will continue to be deeply applied as the best bearer platform. FiberHome Communications will continue to focus on 3G business needs and development trends, and strive to provide advanced and mature solutions and quality services to ensure that operators win the initiative in the 3G competition.
Introduce intelligent engine to smoothly evolve to next-generation optical networks
The MSTP technology featuring multi-service bearer has been fully recognized by operators and has been scaled up in the construction of optical transport networks. After the IP service becomes the main service of the network, the uncertainty and unpredictability of the IP traffic will become more and more urgent for the dynamic allocation of the network bandwidth. The network must have the real-time dynamic configuration capability, that is, the intelligent optical switching capability. Therefore, the introduction of intelligent features in the existing optical transport network, especially in combination with ASON technology, has become an inevitable trend in the evolution of MSTP networks to next-generation optical networks.
ASON is the key to the continued development of next-generation optical networks. By introducing intelligent features to enhance the control plane, it can greatly enhance the survivability, scalability and flexibility of optical transport networks, speed up the configuration of circuits, and provide higher bandwidth utilization. Dynamic bandwidth allocation on demand and multiple service levels are an important part of the optical transport network evolution strategy. At present, major operators and manufacturers have paid extensive attention to ASON technology. China Telecom, China Mobile, China Unicom and other domestic operators have successively conducted large-scale ASON equipment testing to understand the technical level of ASON equipment of various manufacturers. Constantly promote the development of ASON technology in the direction of practical use. It is worth mentioning that in July 2004, in the test of ASON equipment organized by China Mobile, Fiberhome Communications as one of the only two domestic manufacturers to participate in the test, successfully passed various tests, its FonsWeaver series The performance of the equipment is excellent and has been well received by the bureau. The success of this test fully demonstrates that Fiberhome's technical strength in the field of intelligent optical networks has reached the international leading level.
As the national “10th Five-Year†863 project—the “ASON Automatically Switched Optical Network Node Equipment Development and System Experimentâ€, Fiberhome Communications has been paying close attention to relevant international standards since the beginning of 2000, and is committed to ASON equipment development and existing traditions. In the research on the smooth evolution of the next-generation intelligent optical network ASON, the network has been the first to introduce the commercial ASON system FonsWeaver equipment in the industry, which lays a solid foundation for the smooth evolution of traditional optical networks to intelligent optical networks. The device is characterized by large capacity, high density, high reliability, and is supported by SDH/MSTP. It can provide various strict non-blocking crossover matrices of 640G/320G/160G capacity, and supports smooth upgrade to 2.56T. Ethernet interface, ATM interface, and IMA interface, support Ethernet Layer 2 switching, VLAN nesting, RSTP, MPLS, RPR, low-level virtual concatenation, LCAS, etc., greatly optimize data service and 3G service processing, etc. .
In response to the smooth evolution of existing traditional networks to intelligent optical networks, FiberHome Communications has introduced a fusion of Fonsweaver intelligent optical network solutions. The scheme is an effective unification of the transport network and the service network. It adopts an overlapping network model. The ASON network can directly provide SDH services, OTN services, optical wavelength services, 10/100M, Ethernet services, and ATMs through the interface and signaling. Service and SAN services can help operators provide differentiated services for different needs of users, effectively improve the overall competitiveness of operators, reduce network investment costs and operating costs, and enhance network survivability.
In recent years, MSTP technology has been rapidly developed by market applications, from fully integrating LCAS, GFP, MPLS, RPR and other new technologies to harmonious dance with 3G, and then to the smooth evolution of next-generation optical networks, MSTP welcomes It has come again and again to innovate and continue to mature and grow in innovation. It is believed that with the increasing demand of business, operators' deep exploration of MSTP technology and continuous improvement of industry standards, MSTP will surely usher in a broader development space in the future.
Other household electric appliance
gree , https://www.greegroups.com