60 results about "Route filtering" patented technology

Fast, scalable methods and devices are provided for layer four switching in a router as might be found in the Internet. In a first method, a grid of tries, which are binary branching trees, is constructed from the set of routing filters. The grid includes a dest-trie and a number of source tries. To avoid memory blowup, each filter is stored in exactly one trie. The tries are traversed to find the lowest cost routing. Switch pointers are used to improve the search cost. In an extension of this method, hash tables may be constructed that point to grid-of-tries structures. The hash tables may be used to handle combinations of port fields and protocol fields. Another method is based on hashing, in which searches for lowest cost matching filters take place in bit length tuple space. Rectangle searching with precomputation and markers are used to eliminate a whole column of tuple space when a match occurs, and to eliminate the rest of a row when no match is found. Various optimizations of these methods are also provided. A router incorporating memory and processors implementing these methods is capable of rapid, selective switching of data packets on various types of networks, and is particularly suited to switching on Internet Protocol networks.

The invention is designed for use in solving the issue existed in currently-used technology that is the capacity expansion of router is limited by globally sending down the forwarding information table. The method comprises: according to the routing information, generating the forwarding information table; according to the route filter strategy corresponding to each interface board, making the route filter for the forwarding information, and sending the filtered route information to the relay engine.

A method and device for communicating information resources between subscriber end stations and nodes belonging to different network domains is described. The device instantiates different virtual network machines for different network domains using separate independently administrable network databases. Each of the administrable chores of the separate independently administrable network databases includes the assignment of access control and the configuration of the policies for those network databases. The policies include traffic filtering policies to indicate what kind of information payloads can be carried, traffic and route filtering policies to indicate what paths through the network will be used for each payload carried. Each of the network domains includes one of the different virtual network machines and each of the different network domains is virtually isolated from other network domains.

The invention discloses a route advertising method and a device among direct-connecting EBGP neighbors. The method is applied to a local terminal device and an opposite terminal device with the relationship of the direct-connecting EBGP neighbors, and comprises the following steps: selecting one of the direct-connecting EBGP neighbors between the local terminal device and the opposite terminal device as a main neighbor; when the local terminal device needs to advertise routes to the customer device, only sending the route advertisement to the opposite terminal device through the main neighbor in the direct-connecting EBGP neighbors, and refreshing the routes by the opposite terminal device through the route advertisement. The invention reduces the quantity of routes to be maintained and the quantity of routes to be transmitted among a plurality of pairs of devices with the relationship of the direct-connecting EBGP neighbors, and can filter redundant routes without configuring a route filtering strategy.

The present invention relates to a method and an apparatus for filtering the out route based on BGP protocol. The kernel of the present invention is to carry the next hop outbound route filter information in BGP protocol, and to implement outbound route filter (ORF) ability negotiation between BGP Peer; then, to implement outbound filter processing according to the negotiatory result of ORF ability between the BGP Peer. By means of the present invention, the problem that the existing ORF can not filter according to the next hop of route, simplifying configuration greatly as well as complexity of BGP during the ORF processing.

A method and apparatus for providing an access control filter and / or a route filter in a network are disclosed. For example, the method receives a new filter rule or a modified filter rule associated with at least one of: a routing policy, or a security policy. The method creates or modifies one or more filter templates in accordance with the new filter rule or the modified filter rule. The method identifies one or more affected interfaces and audits the one or more affected interfaces. The method then generates one or more commands in accordance with the one or more filter templates if the auditing of the one or more affected interfaces is successful, and downloads filter content to one or more routers using the one or more commands.

Methods and apparatus for Fibre Channel interconnection is provided between a plurality of private loop devices through a Fibre Channel private loop device interconnect system. In the preferred embodiments, the Fibre Channel private loop device interconnect system is a fabric or an intelligent bridging hub. In one aspect of this invention, a Fibre Channel private loop device is connected to two or more Arbitrated Loops containing, or adapted to contain, one or more private loop devices. Preferably, the interconnect system includes a routing filter to filter incoming Arbitrated Loop physical addresses (ALPAs) to determine which Fibre Channel frames must attempt to be routed through the fabric. Numerous topologies of interconnect systems may be achieved. In another aspect of this invention, a method is provided for implementing a logical loop of private loop devices by segmenting the logical loop into a plurality of sets, assigning each set to a physical Arbitrated Loop and connecting the Arbitrated Loops to a Fibre Channel private loop device interconnect system. Additional methods are provided for restricting attached devices to Arbitrated Loop physical addresses within certain ranges. Additionally, methods are provided for resetting hosts, the method generally comprising the steps of detecting the addition of a storage device to a first Arbitrated Loop, and thereafter, resetting the Arbitrated Loop or loops on which a host or hosts reside on second Arbitrated Loop. Methods for operation with use of SCSI initiators generate a link service reject when no address match is found, or when an address match is found, but where no device with the destination ALPA exists on the Arbitrated Loop corresponding to the destination.

Application management is facilitated by observing messages communicated amongst virtual applications external to application-hosting virtual machines. In one instance, the messages can be observed from within a virtual switch outside hosting virtual machines. One or more actions can subsequently be performed as a function of the messages such as but not limited to application monitoring as well as message routing, filtering, and / or transformation.

A method and device for communicating information resources between subscriber end stations and nodes belonging to different network domains is described. The device instantiates different virtual network machines for different network domains using separate independently administrable network databases. Each of the administrable chores of the separate independently administrable network databases includes the assignment of access control and the configuration of the policies for those network databases. The policies include traffic filtering policies to indicate what kind of information payloads can be carried, traffic and route filtering policies to indicate what paths through the network will be used for each payload carried. Each of the network domains includes one of the different virtual network machines and each of the different network domains is virtually isolated from other network domains.

The invention discloses a VPLS (Virtual Private LAN Service) output route filtering method and a device based on a BGP (Border Gateway Protocol). The VPLS output route filtering method comprises the following steps that: after first route equipment which supports an output route filtering ORF (Open Reading Frame) capacity determines that second route equipment, which is a BGP Peer with the first route equipment, supports the ORF capacity, a route filtering strategy sent by the second route equipment is received, wherein the route filtering strategy comprises acceptable station point range Block-Size information of the second route equipment; and when the first route equipment determines that the station point information VE-ID stored by the first route equipment is in the Block-Size information included by the route filtering strategy, route information is sent to the second route equipment. With the adoption of the scheme, the useless information of a receiver can be accurately filtered, so as to save network resources and internal memories of the route equipment.

The invention relates to a method, device and system for propagating a QoS (Quality of Service) strategy. The method comprises the steps of: according to a received BGP (Border Gateway Protocol) routing from first network equipment in an AS (Autonomous System), generating first information, wherein the first information comprises one or more of the followings: an AS number list and a community list; according to the first information, generating a first QoS strategy corresponding to the first information, wherein the first QoS strategy comprises a routing filtering action; and sending the first information and the first QoS strategy to the first network equipment. Therefore, pre-alteration of the QoS strategy does not need to be respectively implemented on a plurality of receiving ends, works of planning a routing classification rule and configuring an entry strategy at a sending end are omitted, a work of matching a QoS local identifier with a stream behavior name at each receiving end is omitted, configuration of a QPPB (QoS Policy Propagation Through the Border Gateway Protocol) is simplified, and the maintenance difficulty is reduced.

A method and device for communicating information resources between subscriber end stations and nodes belonging to different network domains is described. The device instantiates different virtual network machines for different network domains using separate independently administrable network databases. Each of the administrable chores of the separate independently administrable network databases includes the assignment of access control and the configuration of the policies for those network databases. The policies include traffic filtering policies to indicate what kind of information payloads can be carried, traffic and route filtering policies to indicate what paths through the network will be used for each payload carried. Each of the network domains includes one of the different virtual network machines and each of the different network domains is virtually isolated from other network domains.

The invention relates to a method for requesting obtainment of routing information and corresponding routing equipment. The method comprises the following steps: a requester expands a border gateway protocol (BGP) message and adds a route refresh filter flag (RFF) and a refresh route filter entry (RRF) to the BGP message, wherein the RFF means that a route provider is requested to filter all the routing information in a routing information set Adj-Rib-Out corresponding to the requester according to the RRF to obtain the routing information; and the requester sends the expanded BGP message to the route provider to request obtainment of the routing information.

The invention relates to an IVR intelligent emergency disposal method based on 95598 large telephone traffic. The method includes intelligent telephone traffic routing filtering and an intelligent robot voice service. The intelligent telephone traffic routing filtering comprises region telephone traffic early warning, the IVR filtering traffic function and short message sending. The intelligent robot voice service is entered when telephone traffic is busy and is divided into service intelligent processing and online intelligent analysis. By means of the IVR intelligent emergency disposal method, effective filtering of manual requests in the peak telephone traffic region is achieved through the intelligent telephone traffic routing, and effective shunt of the manpower service is achieved through voice access of an intelligent robot; the intelligent telephone traffic routing filtering and the intelligent robot voice service are combined organically, and the center emergency disposal technology and means reach a new step through the different working modes.

The embodiment of the invention provides a route filtering method and device and electronic equipment, and relates to the technical field of communication. The method comprises the following steps: obtaining a routing message to be notified to second equipment connected with first equipment; obtaining the routing type of the routing message, and searching the stored routing filtering information of the second equipment for the routing filtering information of the routing message of the routing type; and determining whether to send the routing message to the second device based on the routing filtering information. In the scheme, the route filtering information is used for filtering the route message to determine whether to send the routing message to the second equipment or not; therefore,when the first equipment announces the routing message to other equipment, filtering is carried out firstly, then the routing message can be announced as required, the routing message does not need to be announced to all equipment, the processing of the first equipment and the waste of bandwidth resources are reduced, and the bandwidth of the first equipment and the utilization rate of the processing resources are improved.

The invention provides an organization method and device for route filtering rules, which are applied to a router. The method comprises the following steps: reading pre-configured filtering rules stored in a database in sequence; finding nodes, which are matched with the filtering rules of corresponding network segments, on a preset binary tree based on network segments corresponding to the read filtering rules, wherein each node on the binary tree corresponds to one network segment; incrementally adding the read filtering rules to adding nodes. By adopting the technical scheme, the matching efficiency can be increased greatly under the condition that a large number of route filtering rules are configured on the router and the configuration is changed frequently.

The invention relates to an intelligent route system and method based on a distributed cluster framework. The intelligent route system comprises a client end, a load equalizer, an interface network element, a sending network element and a gateway. The interface network element is used for carrying out route filtering on downlink mobile information pushed by the client end according to a selected route strategy. The sending network element is used for carrying out route filtering respectively on a state report and uplink mobile information pushed by the gateway. The load equalizer is used for selecting the corresponding route strategy according to newest route information in a shared storage and a service provider mode. The intelligent route system based on the distributed cluster framework is developed on a mobile information comprehensive platform, and the high-speed operation and concurrence of the mobile information data are ensured.

The invention relates to an IVR intelligent system emergency telephone traffic route filtering method based on 95598 large telephone traffic. The emergency telephone traffic route filtering method comprises the steps of region telephone traffic early warning, IVR telephone traffic filtering and short message sending. According to the technical scheme, by analyzing the intensity and region of 95598 telephone traffic rush and the characteristics of services in emergencies, a power supply service center puts forward a method for achieving automatic judgment and analysis of power grid emergencies based on real-time telephone traffic; by constructing the intelligent telephone traffic routing algorithm self-adapted to the power grid emergencies, adopting a classical self-adaptation control method and carrying out analog computation and analysis through historical data, the intelligent telephone traffic routing control algorithm which is high in practicability and capable of being self-adapted to the power grid emergencies is studied out.

The invention provides a method and apparatus for organizing route filtering rules and is applicable to routers. The method includes the steps of sequentially reading pre-configured route filtering rules stored in a database, and searching nodes corresponding to network segments which correspond to the route filtering rules on a preset binary tree based on the network segment corresponding to read route filtering rules, wherein each node on the binary tree corresponds to one network segment. The method also includes the steps of determining whether the network segments corresponding to the route filtering rules are contained in network segments corresponding to existing route filtering rules of a binary tree, if yes, not adding the route filtering rules to the nodes, if no, adding the route filtering rules to the nodes. The method and apparatus is applicable to the situation where lots of route filtering rules are configured to a router and the configuration does not change frequently. According to the technical scheme of the invention, matching efficiency can be substantially improved.

The invention provides a route filtering strategy processing method and device. The method comprises the steps of acquiring an IRF strategy needing to be applied to target second route equipment via first route equipment; generating a notice message carrying the IRF strategy; and sending the notice message to the target second route equipment, thus allowing the target second route equipment to filter received route information according to the IRF strategy. Therefore, the first route equipment can perform unified notice when noticing the route information to the second route equipment, tasks of filtering the route information are dispersed to each piece of second route equipment to be separately executed, and the load of the first route equipment during a route information synchronizing process can be reduced.

The invention discloses a route filtering method for achieving an LDP in an IPRAN system. The route filtering method comprises the following steps that route filtering modes are created, and corresponding route filtering strategies are configured; a route management module filters routes according to the route filtering mode to obtain the routes meeting the condition; and the routes which are notsent to the LDP module in the routes meeting the condition are determined by means of the states marked by newly-added route mark bits and sent to the LDP module, and the mark bits are set to be a sent state. According to the method, the route filtering strategies are configured by creating route prefix lists, the routes sent to the LDP modules are filtered according to the route prefix list, unnecessary consumption is reduced, the efficiency and the stability of the LDP are improved, and normal operation of a VPN is guaranteed.

The invention relates to a multi-dimensional en-route filtering method of a wireless sensor network. A network key database is divided into a plurality of clusters, and each node can be joined in a group in each cluster. The rejection service attack and the false report attack in the wireless sensor network can be effectively dealt with, the problem of the traditional en-route filtering method that the coverage performance and the filtering performance cannot be simultaneously improved can be solved, and at the same time higher trapping resistance can be still maintained.

In an embodiment, a network device automatically creates a more optimal route entry for inter-base station traffic to be transmitted between a local base station and a remote base station. The network device automatically discovers a remote IP address of the remote base station used for inter-base station traffic based upon traffic transmitted by the local base station destined to the network device or traffic transmitted between the local and remote base stations. In response, the network device inserts an entry into a route import map representing the remote IP address, and based upon determining that a route from a route update message matches this entry, installs the more optimal route entry into the routing table. This route provides a shorter path to the remote base station through the backhaul network compared to a less optimal route through a mobile core network previously used for the inter-base station traffic.

Discussed herein is technology for verifiable network configuration repair. A method can include adding a routing adjacency or route redistribution edge to a router of an aETG to generate an enhanced aETG (eaETG), adding, for each dETG of dETGs, static route edges to a destination of the dETG to generate an enhanced dETG (edETG), determining, for each of the edETGs, all simple paths from all sources to the destination of the edETG, determining a set of paths (pathset) over the determined simple paths that satisfies the policies, and translating the edge additions and / or removals in the eaETG and in the edETGs to an addition and / or removal of one or more of a routing adjacency, routing filter, or static route based on the determined pathset.

The invention discloses a dynamic routing arrangement method and system based on Spring Cloud Gateway, and belongs to the technical field of service gateways. The method comprises the following steps: S1, registering dynamic routing rule information; S2, starting, loading and monitoring dynamic routing configuration; S3, requesting to call the gateway; S4, matching a route filtering control strategy; S5, executing a dynamic routing arrangement process; and S6, returning the request. According to the invention, the arrangement of Spring Cloud Gateway dynamic routing is realized, the service gateway is changed from nothing to the existence, a service provider does not need to concern the details of dynamic routing arrangement, the service gateway can be generated only by configuring corresponding strategy information according to requirements, the service gateway uniformly calls an address prefix, all gateways are managed and controlled in a centralized manner by means of a global filter, individual gateways are managed and controlled in an isolated mode according to private filters, logs are asynchronously stored in stages in the calling process, request return results are accurate and reliable, and the gateways are high in performance and available.

The present invention relates to a routing filtering method, device, electronic equipment and computer-readable storage medium. The core equipment obtains and saves the routing message notified by the branch device, and when it is determined that there is a notification group corresponding to the network identifier included in the routing message , add the device ID included in the routing message to the corresponding notification group; then the core device notifies the routing message to the remaining device IDs included in the corresponding notification group through the routing table corresponding to the routing ID included in the routing message branch device. In this process, the core device only has the query action of matching the notification group, and only traverses the branch devices corresponding to other device identification members in the corresponding notification group. For branch devices, and each neighbor requires a query match, the filtering efficiency can be improved.

A method, apparatus and system for propagating QoS policies, wherein the method comprises: generating first information according to a BGP route of a first network device received from an AS, the first information comprising one or more of an AS number list and a community list; according to the first information, generating a first QoS policy corresponding to the first information, wherein the first QoS policy comprises a route filter action; and sending the first information and the first QoS policy to the first network device. Thus, it is not required to change in advance the QoS policies separately for a plurality of receiving terminals, eliminating the need to plan route classification rules as well as the need to match a QoS local identifier and stream behavior name at the receiving terminal, simplifying QPPB configuration and reducing maintenance issues.

The invention relates to a route filtering method and device, electronic equipment and a computer readable storage medium. The method comprises the steps: enabling core equipment to obtain and store aroute message notified by branch equipment, and adding an equipment recognition contained in the route message to a corresponding notification group when determining that there is a notification group corresponding to a network recognition contained in the route message; and then the core device notifies the routing message to the branch devices corresponding to the rest device identifiers included in the corresponding notification group through the routing table corresponding to the routing identifier included in the routing message. In this process, the core equipment only performs the query action of matching the notification group and only traverses the branch equipment corresponding to other equipment recognition parts in the corresponding notification group, so that compared with the prior art that the core equipment traverses all the branch equipment establishing the neighbor relationship with the core equipment and each neighbor needs one query matching, the filtering efficiency can be improved.