发明名称 |
Recovery method for ring-based network |
摘要 |
A recovery method for ring-based network comprises following steps: when an error occurs at first node, second and third nodes adjacent to the first node transmit a link-down packet respectively; after the first node is repaired, the first, second and third nodes transmit a link-up packet respectively, and each link-up packet includes a priority value of the first, second or third node; the priority values of the first, second and third nodes are compared with each link-up packet to enter the ring port of the first node, the second node or the third node into a forward status or a blocked status; and a forward link or a blocked link is formed among the ring ports of the first, second and third nodes. |
申请公布号 |
US8804491(B2) |
申请公布日期 |
2014.08.12 |
申请号 |
US201113287703 |
申请日期 |
2011.11.02 |
申请人 |
National Tsing Hua University |
发明人 |
Huang Nen-Fu;Chen Chih-Hao |
分类号 |
H04L12/26;H04L12/437;G06F15/177;G06F11/00 |
主分类号 |
H04L12/26 |
代理机构 |
Wang Law Firm, Inc. |
代理人 |
Wang Law Firm, Inc. ;Wang Li K.;Hsu Stephen |
主权项 |
1. A recovery method for a ring-based network, and the ring-based network comprising a plurality of nodes, and each of the nodes having a priority value of each of the adjacent nodes and their own priority value, and the nodes including a first node, a second node and a third node, and the first node being between the second node and the third node, and the recovery method comprising the steps of:
transmitting a link-down packet having a priority value of the second node and the first node from the second node to the ring-based network and transmitting a link-down packet having the priority value of the third node and the first node from the third node to the ring-based network; forming a forward link by a backup link of the ring-based network; examining the priority values of the link-down packets by each of the nodes at both ends of the backup link except downed node after receiving the link-down packets; and determining which one of the plurality of nodes is downed if each of the link-down packets has the priority value of the downed node simultaneously; wherein each of the nodes at both ends of the backup link discards a latter received link-down packet without transmitting to the rest of nodes; transmitting a link-up packet from the first node, the second node and the third node separately after the first node is repaired, wherein each of the link-up packets has two priority values of nodes selected from the group consisting of the first node, the second node and the third node; comparing the priority values of the first node, the second node and the third node with each of the link-up packet after the first node is repaired, such that a ring port of the first node, the second node or the third node enters into a forward status or a blocked status after the first node is repaired; forming a blocked link or the forward link between two of the ring ports selected from the group consisting of the first node, the second node and the third node; clearing the priority value of the first node by the second node after the second node transmits the link-down packet with the priority values of the second node and the first node; and clearing the priority value of the first node by the third node after the third node transmits the link-down packet with the priority values of the third node and the first node. |
地址 |
Hsinchu TW |