Method and site for achieving link aggregation between the interconnected RPR

Abstract

The present invention provides a method for implementing link aggregation between interconnected elastic packet rings in a multi-resilient packet ring interconnection system. The interconnection system includes at least a first elastic packet ring and a second elastic packet ring. The elastic The packet ring includes at least two cross-ring sites, and the method includes the following steps: establishing at least two cross-ring channels between the first elastic packet ring and the second packet ring to transmit cross-ring services; wherein according to the configured aggregation strategy Select a cross-ring site to transmit cross-ring services on the corresponding cross-ring channel. By adopting the above-mentioned method and site of the present invention, after a certain cross-ring site or channel fails, the business of the site can be automatically transferred to other cross-ring channels, and the protection time is less than 50 milliseconds; and the cross-ring Services have the same CoS on multiple RPR rings.

Description

technical field [0001] The present invention relates to the technical field of resilient packet ring (Resilient Package Ring-RPR), in particular to a method for realizing aggregated links between multiple RPR rings, and a cross-ring station. Background technique [0002] Resilient packet ring is a metropolitan area network technology that uses a double-ring structure to transmit data between multiple sites. It has been approved by the IEEE (The Institute of Electrical and Electronics Engineers-American Institute of Electrical and Electronics Engineers) 802.17 working group standardization. The key features of RPR include the following: [0003] (1) Regardless of the transmission medium [0004] The transmission medium constituting RPR can be SDH (Synchronous digital hierarchy), SONET (Synchronous optical network), FDDI (Fiber Distributed Data Interface), or Gigabit (1GE or 10G) etc; [0005] (2) Support unicast, multicast, broadcast data transmission [0006] For unicas...

AI Technical Summary

Problems solved by technology

[0026] However, if routers 301, 302 are used to realize the cross-ring channel between RPR rings 310, 320, then when the cross-ring channel fails, the protection time of the cross-ring channel will depend on the protection time of the router, and the protection time of the router The time is above the second level, which cannot meet the protection requirements of the carrier level. The protection time of the carrier level is not greater than 50 milliseconds

In addition, through the interconnection technical solution shown in Figure 3, the service level CoS cannot be guaranteed between the rings 310 and 320, because the routers pass between the rings 310 and 320, and the routers will replace the information of the data frame, resulting in the use of two Layer separation level information cannot be passed to another ring

Images