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Resilient Packet Ring (RPR), also known as IEEE 802.17, is a protocol standard designed for the optimized transport of data traffic over optical fiber ring networks. The standard began development in November 2000 and has undergone several amendments since its initial standard was completed in June 2004. The amended standards are 802.17a through 802.17d, the last of which was adopted in May 2011. It is designed to provide the resilience found in SONET/SDH networks (50 ms protection) but, instead of setting up circuit oriented connections, provides a packet based transmission, in order to increase the efficiency of Ethernet and IP services.
A method and device for forwarding a message in a resilient packet ring
The application provides a resilient packet ring message forwarding method and device. The method comprises the following steps: receiving a cross-device link aggregation announcement message through a resilient packet ring network; allocating a RPR cross-device link aggregation identifier for a RPR MAC address of a member node carried by the cross-device link aggregation announcement message; receiving an Ethernet unicast message; when a destination MAC address of the received Ethernet unicast message corresponds to a RPR cross-device link aggregation identifier; performing hash calculation according to the Ethernet unicast message, taking a RPR MAC address of a member node corresponding to a result of the hash calculation as a destination RPR MAC address, taking a RPR MAC address of the current node as a source RPR MAC address, and encapsulating the received Ethernet unicast message into a RPR unicast message; and sending the RPR unicast message through an out port of a shortest RPR path reaching the destination RPR MAC address of the RPR unicast message.
Owner:新华三技术有限公司合肥分公司