摘要:
A method of restoration for an optical network, the network comprising a plurality of nodes (40, 50) interconnected with each other by optical links (130), a subset of the nodes (40) each comprising a regenerator, the method comprising: storing (160) a quality of transmission parameter and a regenerator availability at each of the plurality of nodes (40, 50); notifying (170) a branch node (110) in response to detecting a failure (140) within a link (130) forming part of the path between a source node (20) and a destination node (30), wherein the branch node (110) is the neighbouring upstream node (40, 50) upstream of the link failure (140), the branch node (110) having a regenerator; the branch node (110) computing (190) a restoration segment (100) to a merge node (120) having a regenerator which is a neighbouring downstream node which is downstream of the link failure (140), the restoration path (100) being based on the quality of transmission parameter and regenerator availability information; restoring (180) the path between the source node (20) and the destination node (30) using the restoration segment (100).
摘要:
A method of restoration for an optical network, the network comprising a plurality of nodes (40, 50) interconnected with each other by optical links (130), a subset of the nodes (40) each comprising a regenerator, the method comprising: storing 160) a quality of transmission parameter and a regenerator availability at each of the plurality of nodes (40, 50); notifying (170) a branch node (110) in response to detecting a failure (140) within a link (130) forming part of the path between a source node (20) and a destination node (30), wherein the branch node (110) is the neighbouring upstream node (40, 50) upstream of the link failure (140), the branch node (110) having a regenerator; the branch node (110) computing (190) a restoration segment (100) to a merge node (120) having a regenerator which is a neighbouring downstream node which is downstream of the link failure (140), the restoration path (100) being based on the quality of transmission parameter and regenerator availability information; restoring (180) the path between the source node (20) and the destination node (30) using the restoration segment (100).
摘要:
A method of load balancing zero-bandwidth Traffic Engineering Label Switching Paths (0-bw TE LSPs) in a communication network having a plurality of network nodes and a plurality of network links connecting the nodes. The method may be implemented in a centralized Path Computation Element (PCE) or in an ingress router. Each equal cost path from a source node to a destination node is identified from network topology information. A probability of selecting each equal cost shortest path is determined using an iterative Global Load balancing Algorithm (GLA) and each 0-bw TE LSP is provisioned with a specific probability such that the 0-bw TE LSPs are uniformly distributed over all network links.
摘要翻译:在具有多个网络节点的通信网络和连接节点的多个网络链路的负载平衡零带宽流量工程标签交换路径(0-bw TE LSP)的方法。 该方法可以在集中式路径计算元件(PCE)或入口路由器中实现。 从源节点到目的地节点的每个相等的成本路径是从网络拓扑信息中识别出来的。 使用迭代全局负载平衡算法(GLA)确定选择每个相等成本最短路径的概率,并且以特定概率提供每个0-bw TE LSP,使得0-bw TE LSP均匀地分布在所有网络链路上。
摘要:
A method of load balancing zero-bandwidth Traffic Engineering Label Switching Paths (0-bw TE LSPs) in a communication network having a plurality of network nodes and a plurality of network links connecting the nodes. The method may be implemented in a centralized Path Computation Element (PCE) or in an ingress router. Each equal cost path from a source node to a destination node is identified from network topology information. A probability of selecting each equal cost shortest path is determined using an iterative Global Load balancing Algorithm (GLA) and each 0-bw TE LSP is provisioned with a specific probability such that the 0-bw TE LSPs are uniformly distributed over all network links.
摘要翻译:在具有多个网络节点的通信网络和连接节点的多个网络链路的负载平衡零带宽流量工程标签交换路径(0-bw TE LSP)的方法。 该方法可以在集中式路径计算元件(PCE)或入口路由器中实现。 从源节点到目的地节点的每个相等的成本路径是从网络拓扑信息中识别出来的。 使用迭代全局负载平衡算法(GLA)确定选择每个相等成本最短路径的概率,并且以特定概率提供每个0-bw TE LSP,使得0-bw TE LSP均匀地分布在所有网络链路上。
摘要:
A travel accessory for the folding of garments inside a suitcase, includes at least one structural element for spreading and/or hanging (1) and an insert (2) of a soft, flexible material, designed to be inserted into the garment, engaged with the structural element (1).
摘要:
A travel accessory for the folding of garments inside a suitcase, includes at least one structural element for spreading and/or hanging (1) and an insert (2) of a soft, flexible material, designed to be inserted into the garment, engaged with the structural element (1).
摘要:
Method and apparatus for dynamic provisioning of reliable connections in the presence of multiple failures in optical networks are described. One embodiment is a method for allocation of protection paths after a failure in an optical network. The method comprises, responsive to a failure in an active lightpath, switching traffic on the active lightpath to a protection path; subsequent to the switching, identifying all active lightpaths in the network that no longer have an available protection path; and attempting to allocate a protection path to each of the identified active lightpaths.