Method for preventing repeated refresh of sub-ring outer domain address

一种防止子环域外地址重复刷新的方法

Abstract

The invention discloses a method for preventing repeated refresh of a sub-ring outer domain address, which is characterized by comprising that: each node of an Ethernet ring maintains a set Flush-list, wherein elements contained in the set Flush-list consist of ternary groups, namely ring, instance identification, interconnection node identification and link identification; and the node compares the ternary groups in the received R-APS (flush) protocol message with the elements in the set (Flush-list) to judge whether the node refreshes the address. The method can solve the problem (namely the problem of cyclic refresh of an address list) of the sub-ring outer domain refreshing address scheme of ITU-TG.8032 so that address refreshing storm is avoided and the network can be converged in 50ms after switching protection, and the method is extremely important for greatly improving the network performance.
本发明公布了一种防止子环域外地址重复刷新的方法,其特征在于以太环网的每个节点维护一个集合Flush_list,集合Flush_list包含的元素由三元组构成,即环实例标识、互连节点标记和链路标识;节点通过将收到的R-APS(flush)协议报文中的三元组与集合(Flush_list)中的元素进行比较来判定节点是否刷新地址。本发明能够克服ITU-TG.8032的子环域外刷新地址方案存在的问题(即,地址表循环刷新的问题),从而避免产生地址刷新风暴,使网络在切换保护后能够在50ms收敛,对大大提高网络性能是极其重要的。

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