摘要:
A method of allowing a nomadic terminal to access a home network on the Layer 2 level. The method comprises connecting said terminal to a remote access network via an access point, the remote access network being connected to an operator's backbone network via a remote access router. Signalling is exchanged between the access point and an authentication server within the backbone network in order to authenticate the terminal to the authentication server and, following successful authentication, a Layer 2 tunnel extending across the backbone network is established for the purpose of connecting said nomadic terminal to the home network.
摘要:
A method is provided of enabling access for a terminal (12-1) to a remote network (60) via a mobile network (40). A first connectivity service function (30) is provided as part of the mobile network (40). A second connectivity service function (20) is provided as part of the remote network (60). A third connectivity service function (10) is provided associated with the terminal (12-1). The first connectivity service function (30) is adapted to cooperate in establishing a first layer 2 tunnel (25) between itself (30) and the second connectivity service function (20). The first connectivity service function (30) is also adapted to cooperate in establishing a second layer 2 tunnel (15) between itself (30) and the third connectivity service function (10). The terminal (12-1) thereby has layer 2 access into the remote network (60) through the first and second tunnels (25, 15) using the first, second and third connectivity service functions (30, 20, 10).
摘要:
A method is provided of enabling access for a terminal (12-1) to a remote network (60) via a mobile network (40). A first connectivity service function (30) is provided as part of the mobile network (40). A second connectivity service function (20) is provided as part of the remote network (60). A third connectivity service function (10) is provided associated with the terminal (12-1). The first connectivity service function (30) is adapted to cooperate in establishing a first layer 2 tunnel (25) between itself (30) and the second connectivity service function (20). The first connectivity service function (30) is also adapted to cooperate in establishing a second layer 2 tunnel (15) between itself (30) and the third connectivity service function (10). The terminal (12-1) thereby has layer 2 access into the remote network (60) through the first and second tunnels (25, 15) using the first, second and third connectivity service functions (30, 20, 10).
摘要:
The present invention relates to a packet switched communications network especially to an Ethernet network in which User Network Interfaces (UNI) are standardized between client network (202) and core network (203) with a number of UNI service attributes. In one aspect of the invention a method is used in current packet switched nodes implementing a policer function. The task of the function is to decide whether packets with high drop preference need to be dropped or not due to resource shortage on the given interface. All outgoing packets at a given port will undergo this policer (401) irrespective of the source, destination, identification codes or traffic class. Policer (401) drops packets with high drop preference in one traffic class before a packet of low drop preference is dropped in any other traffic class, and drops packets with high drop preference before a packet of low drop preference is dropped in the same queue. In the course of dropping packets, policer (401) prevents the reordering of packets with low drop preference and packets with high drop preference within the same flow.
摘要:
A method and device for determining a packet drop indicator, for use in a communication system is described. The method comprises the following steps: A. determining the number of packets sent at a sending side within a first time period; B. determining the number of packets received at a receiving side within a second time period; and C. calculating a packet drop indicator on the basis of said number of sent packets and said number of received packets.
摘要:
A method and device for determining a packet drop indicator, for use in a communication system is described. The method comprises the following steps: A. determining the number of packets sent at a sending side within a first time period; B. determining the number of packets received at a receiving side within a second time period; and C. calculating a packet drop indicator on the basis of said number of sent packets and said number of received packets.
摘要:
In the area of network provisioning, there is a problem of selecting a suitable traffic-provisioning model for large networks due to the high management complexity of the resource-efficient trunk model and the poor bandwidth efficiency of the easy-to-configure hose model. The invention is based on the idea of partitioning at least part of the network into multi-node clusters, and defining traffic limitations on at least two levels, including the intra-cluster level and the inter-cluster level, where the traffic limitations include one or more node-to-cluster traffic limitations for inter-cluster traffic. Subsequently, cluster-based provisioning of the network is performed based on the traffic limitations. The novel node-to-cluster limitations proposed by the invention are preferably applied in a cluster-based trunk or hose model on the inter-cluster level. In other words, for the description of the inter-cluster traffic (traffic between the clusters) cluster-based trunk or hose models can be used, preferably depending on the available information about the traffic. The cluster-based provisioning makes it possible to find a trade-off between management complexity and overprovisioning.
摘要:
Each domain of a multi-domain network collects intra-domain routing information relating to that domain and makes a reduced view of that information available to other domains of the network, and in which each domain of the network uses its own intra-domain routing information together with the reduced-view routing information from the other domains to form a logical view of the network so as to enable that domain to make an end-to-end route selection decision.
摘要:
The present disclosure relates to a technique for maintaining communication established between a mobile node (20) and a home network (100) of the mobile node (20). A method embodiment comprises the step of: determining whether the mobile node 20 has moved to a foreign network (120) different from the home network (100); wherein, when it is determined in the step of determining that the mobile node (20) has moved to the foreign network (120), the method embodiment further comprises the steps of: signalling, by the mobile node (20), a foreign address assigned by the foreign network (120), to a home agent (10) of the home network (100); and maintaining the communication between the mobile node (20) and the home network (100) by establishing communication between the mobile node (20) and the home agent (10) of the home network (10) for transmission of Data Link Layer (“DLL”) frames through an Internet Protocol (“IP”) based network (140), wherein the mobile node (20) is addressed by the home agent (10) by means of the foreign address assigned by the foreign network (120).
摘要:
The present disclosure relates to a technique for maintaining communication established between a mobile node (20) and a home network (100) of the mobile node (20). A method embodiment comprises the step of: determining whether the mobile node 20 has moved to a foreign network (120) different from the home network (100); wherein, when it is determined in the step of determining that the mobile node (20) has moved to the foreign network (120), the method embodiment further comprises the steps of: signalling, by the mobile node (20), a foreign address assigned by the foreign network (120), to a home agent (10) of the home network (100); and maintaining the communication between the mobile node (20) and the home network (100) by establishing communication between the mobile node (20) and the home agent (10) of the home network (10) for transmission of Data Link Layer (“DLL”) frames through an Internet Protocol (“IP”) based network (140), wherein the mobile node (20) is addressed by the home agent (10) by means of the foreign address assigned by the foreign network (120).