Environmental-friendly accessing method and environmental-friendly accessing network

Abstract

The invention discloses an environmental-friendly accessing method which comprises the following steps: forwarding only the message on the third layer by a convergence ring, forwarding only the message on the second layer by an access ring, and configuring dual gateways uplinked to a core node, wherein each access node of the access ring takes two convergence nodes as primary and standby gateways. The invention also discloses an environmental-friendly accessing network. Because the hardware in the access layer forwards the message on the second layer, no software needs to be started for learning routing. In addition, because the static primary and standby routing technology is used, the convergence time can be shortened, the fault-tolerant ability can be improved, the defect that virtual router redundancy protocol (VRRP) is used for backing up the primary gateway on two sides can be avoided. The invention can avoid the oscillation of the address resolution protocol (ARP) of the gateway, improve the stability of the system and save the resource of the central processing unit (CPU).

Description

technical field [0001] The invention relates to a ring network protection technology, in particular to an access ring protection method and an access ring protection network. Background technique [0002] Packet Transport Network (PTN) is a packet-based network with transport functions, mainly used to solve the IP-based bearer of the Radio Access Network (RAN). PTN takes packet services as the core and provides a variety of services. It also has high availability and reliability. , Efficient bandwidth management mechanism and traffic engineering, convenient OAM (Operation Administration and Maintenance) and network management, high scalability and security, etc. The 3G system is mainly composed of two parts: the radio access network and the core network. The radio access network mainly includes two types of nodes, the base station and the radio network controller (RNC / BSC), which are responsible for providing the connection between the terminal equipment and the core network...

AI Technical Summary

Problems solved by technology

[0009] According to the agreement, the VRRP protocol message is sent once every second at the fastest, and the state is switched if the message is not received within 3 cycles, then this process takes at least 3 seconds, and the base station control with high reliability and stability requirements For the network management information transmission on the base station controller (BSC) and radio network controller (Radio Network Controller, RNC), this time is relatively long. If you need to speed up the switching time, you need to start Bidirectional Forwarding Detection (Bidirectional Forwarding Detection, BFD) protocol, but the interaction of this protocol is more complicated, and the low-end PTN equipment used in the access ring has higher requirements for three-layer processing capabilities. layer scheme

[0010] However, based on the existing technology, in such as figure 2 In the case shown (that is, the heartbeat lines of the access ring and the aggregation ring are disconnected at the same time), the two ends of the VRRP group (that is, the two aggregation nodes) will lose communication, and both sides will be upgraded to the active device. The device uses one IP address externally, and only the master device responds to Address Resolution Protocol (ARP) and sends and receives messages. If there are two master devices, both master devices will respond to ARP messages and forward messages, so that There will be gateway ARP oscillation on the access node, therefore, the use of VRRP technology for access ring protection has defects

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