Method and device for implementing upper ring and lower ring of flexible gruoping ring

Abstract

The device includes process modules in 2 / 3 layers, selection / service sort module, module of packaging / peeling off module, service bandwidth control module and control part. Without increasing overhead, the method can realize functions for loading service to ring or unloading service from ring in RPR standard, not only supports RPR related functions such as direct conversion between Ethernet frame and RPR frame, sorting services, ring selection according to service grade etc, but also supports transparent bridge and VLAN bridge. Thus, RPR ring network supports exchange in second layer and third route, supports VLAN, STP etc. second layer protocol and third layer protocol as well as supports unicast, multicast, and broadcast. The method can prevent data steam on ring from flooding to network connected to RPR bridge.

Description

technical field [0001] The present invention relates to the field of network and communication, in particular to a method and device for RPR (Resilient Packet Ring, Resilient Packet Ring) service up and down ring. Background technique [0002] The RPR ring network is a network at the MAC layer, which is formed by connecting many RPR sites. All sites on the ring form a broadcast domain, and bridges are the sites for services on and off the ring, as shown in Figure 1. The RPR standard IEEE 802.17 appendix suggests that RPR bridges should be consistent with IEEE 802.1D transparent bridges and IEEE 802.1Q VLAN bridges. The U.S. patent application with publication number 20030074469: Method and apparatus for transparent LAN-to-LAN connection between two customer locations through a RPR data transport network, proposes a method of adding a control frame header before an Ethernet frame and then encapsulating it into an RPR frame The processing method, this method of adding a contr...

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Problems solved by technology

The U.S. patent application with publication number 20030074469: Method and apparatus for transparent LAN-to-LAN connection between two customer locations through a RPR data transport network, proposes a method of adding a control frame header before an Ethernet frame and then encapsulating it into an RPR frame This method of adding a control frame header before the Ethernet frame increases overhead, and at the same time cannot directly transmit Ethernet frames on the ring, and cannot directly support transparent bridges and VLAN bridges

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