摘要:
The present disclosure relates to methods supporting enhanced scheduling of IP data packets originating from different radio access technologies. One aspect is a method in a node in a radio access network, said node comprising one or more radio access technology circuitry, each radio access technology circuitry serving data packet traffic according to a certain radio access technology, said method comprising marking the header of IP data packets with an identification code indicating which radio access technology that the data packets originated from, and a common Quality of Service class regardless of which radio access technology each data packet originated from and sending the data packets via a common secure tunnel. Another aspect is a method in a node comprising routing or switching functionality, the method comprising scheduling and forwarding the IP data packets according their radio access technology identification code using a preset radio access technology scheduling policy.
摘要:
This invention relates to a method and a node for energy efficient routing and switching in a communication network. When determining the best path from an originating node to a destination node, current routing or switching protocols use route selection metrics based on the bandwidth of the link interface. Certain paths are however consuming more power that others which can result in traffic flowing over a high power consuming and long distance path, because this is the best path based on the existing metrics. The present invention overcomes this by introducing a node and a method to switch data also using energy consumption metrics. These metrics can be based on the power consumption in link interfaces, the links and in the node.
摘要:
The present disclosure relates to methods, a system and an apparatus for detection of load balancing in a packet-switched communication network (10). According to an embodiment a plurality of test sessions(22, 23, 24, 25) are initiated, which differ with respect to at least one associated parameter value for a source address, a destination address, a source port, a destination port, or a protocol. Load detection in the packet-switched communication network (10) can be detected based on differences between measurement results (28) of different test sessions (22, 23, 24, 25) of the plurality of test sessions. Situations where one network path is measured, while application traffic (21) takes another unmeasured network path can be avoided by setting-up multiple simultaneous test sessions (22, 23, 24, 25) with differing parameter values such that the test sessions are routed differently by any hash algorithms(19a, 19b, 19c, 19d) used for load balancing across network paths.
摘要:
Embodiments of the present invention include a communications network using end-to-end tunnels. A control unit monitors the traffic load on at least two paths, as well as determines a power saving traffic distribution if the total traffic on the at least first and second paths if the traffic load does not exceed the capacity of both or all paths between the same end nodes. The power saving traffic distribution puts at least one of the first and second paths in a standby mode in which it carries no traffic. A command unit redirects traffic according to the power saving distribution and to order at least one network element or at least one link in the path or paths to be put in standby mode to enter into a power saving standby mode.
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 method of merging Distributed Hash Table (DHT) rings in heterogeneous network domains, where each domain includes a DHT ring. Upon determining that a node is common to first and second DHT rings on the same hierarchical level and having at least one Overlay Router in common, a link is started between a node in the first DHT ring and a node in the second DHT ring by establishing an indirect link through the common node. An indirect link is created between the first and second DHT rings, and virtual links are created to DHT rings positioned higher in the DHT ring hierarchy until all the DHT rings are merged into a single logical ring.
摘要:
A system, method, and router for routing data packets in an overlay network built over heterogeneous layer-3 domains. A link state overlay routing protocol enables an overlay router to route data packets based on flat identifiers and decides the best path to a destination taking into account a number of parameters such as round trip time. Scalability is provided by making routing decisions based on a network identifier rather than a single end-node identifier.
摘要:
A system, method, and node for a Routing Controller (RC) to obtain from a Path Computation Element (PCE), network resource path metrics across a plurality of domains in a communication network in which each domain includes a plurality of Border Nodes (BNs). The RC sends to the PCE, a first message requesting a first path computation between each pair of BNs. The first message contains a maximum metric-value that a path computation must not exceed for a Path Computation Client (PCC) to consider the path computation acceptable. The RC then sends a second message requesting the PCE to compute a subsequent path computation for each BN pair for which the first path computation did not exceed the maximum metric-value. The second message contains a minimum metric-value that a path metric must exceed for the PCC to consider the path metric acceptable. The RC then receives the computed subsequent path computation.
摘要:
A system, method, and node for a Routing Controller (RC) to obtain from a Path Computation Element (PCE), network resource path metrics across a plurality of domains in a communication network in which each domain includes a plurality of Border Nodes (BNs). The RC sends to the PCE, a first message requesting a first path computation between each pair of BNs. The first message contains a maximum metric-value that a path computation must not exceed for a Path Computation Client (PCC) to consider the path computation acceptable. The RC then sends a second message requesting the PCE to compute a subsequent path computation for each BN pair for which the first path computation did not exceed the maximum metric-value. The second message contains a minimum metric-value that a path metric must exceed for the PCC to consider the path metric acceptable. The RC then receives the computed subsequent path computation.