Ethernet-based Broadband Access Network Technology

Ethernet technology is still quite common, So I studied the Broadband Access Network Technology Based on Ethernet technology. Here I will share it with you, hoping it will be useful to you. Given that the current solutions and devices cannot fully meet the requirements of a public network environment such as the access network, we need to study the devices and technologies that adapt to the public network environment, broadband Access Network Based on Ethernet technology has become a new hotspot.

The Ethernet-based broadband access network consists of local devices and user-side devices. Local devices are generally located in residential buildings; or the local equipment is located in the Commercial Building, and the user-side equipment is located in the floor. The local device provides an interface with the IP backbone network, and the user-side device provides a 10/100 BASE-T interface connected to the user's terminal computer. Local devices can collect the Network Management Information of user-side devices.

In Ethernet-based broadband access networks, user-side devices only have link layer functions and work in the MUX multiplexing mode. Users are isolated from each other at the physical layer and link layer, this ensures the security of user data. In addition, the user-side device can dynamically change its port rate under the control of the local device, so as to ensure the lowest access rate for users, limit the maximum access rate for users, and support QoS Assurance for services. For multicast services, the local device controls the status of multicast groups and group members. The user-side device only performs controlled multicast replication and does not need multicast group management. Local devices also support user authentication, authorization, billing, and dynamic allocation of user IP addresses. To ensure device security, the local device and the user-side device adopt a logically independent internal management channel.

In the Ethernet-based broadband access network, the local device is different from the router. The router maintains a port network address ing table, while the local device maintains a port host address ing table; the user-side device is different from the Ethernet switch. The ethernet switch isolates unicast data frames and does not isolate the data frames of broadcast addresses. The user-side device only achieves the reuse and reuse of Ethernet frames.

Ethernet-based broadband access networks also have powerful network management functions. Like other access networks, they can perform configuration management, performance management, fault management, and security management; you can also provide a wide range of billing information to the billing system, allowing the billing system to charge by the amount of information, by connection duration, or by monthly subscription.

With the explosive growth of IP Services and the increasing openness of China's telecom operation market, both traditional telecom operators and new operators are in an invincible position in the new competitive environment, the construction of an IP-oriented telecom infrastructure network is the focus of their network construction. In the access section of man, many operators choose Ethernet technology. It is worth noting that existing Ethernet Access Technologies all have problems of one or another, which brings great risks to future business development. Some operators even moved the Ethernet technology used for computer LAN to the access network, so the information between different users could not be isolated. It is unimaginable to carry out e-commerce on such platforms. This operation method can only grab a large number of users at a time. When users find that their own interests are not guaranteed, operators will surely eat their own results.

The Ethernet-based broadband access network is very different from the traditional Ethernet technology for computer LAN. It only uses the Ethernet frame structure and interface, and the network structure and working principle are completely different, it provides high information security. Telecom-level network reliability, powerful network management functions, and user access bandwidth can be ensured, which are not achieved by the existing Ethernet technology. Therefore, the Ethernet-based broadband access network can be fully applied in the public network environment to provide users with stable and reliable broadband access services. In addition, because the Broadband Access Network Based on Ethernet technology provides users with standard Ethernet interfaces and is compatible with all terminals with standard Ethernet interfaces, users do not need to configure any new interface cards or protocol software, therefore, it is a very cheap broadband access technology. The Ethernet-based broadband access network is much cheaper than ADSL, Cable Modem, and so on, whether it is a network device or a user-end device. Based on the above considerations, the Ethernet-based broadband access network will play an important role in future broadband IP Access.