Abstract: The present disclosure discloses a two-layer private line network system, a configuration method, and a device. The two-layer private line network system includes a system switch and a POP server connected to each other. The system switch is configured to receive a data packet from a customer service server, add an outer-layer virtual local area network (VLAN) identifier to the data packet, and send the data packet carrying the outer-layer VLAN identifier to the POP server. The POP server is configured to strip off the outer-layer VLAN identifier to restore the data packet sent by the customer service server, and send the restored data packet to another POP server through a two-layer tunnel.

Abstract: The present disclosure discloses a method, system, and device for switching a Layer 2 tunnel. The method includes: when the Layer 2 tunnel is switched from a first point of presence (POP) server to a second POP server, obtaining, by the first POP server, a current address information table, and constructing an address information packet; forwarding, by a switch, the address information packet to the second POP server; constructing, by the second POP server, spoofing packets according to an address information table carried in the address information packet; wherein each MAC address in the address information table is sequentially used as a source address of each of the spoofing packets; and receiving, by the switch, the spoofing packet sent from the second POP server, and updating a local address information table according to a port for receiving the spoofing packet and a source address in the spoofing packet.

Abstract: A method and a device for acquiring bit torrent (BT) resource information are provided. When interacting with a peered terminal for exchanging the data of a BT resource, in the case that a local terminal does not have the metadata of the BT resource, the local terminal, after performing the BT protocol handshake, determines the number of data slices of the BT resource based on the bitmap A of the BT resource sent by the peered terminal, and then a NOT operation of the bitmap A is performed, and the bitmap B obtained through the NOT operation is fed back to the peered terminal to trigger the peered terminal to send an acquisition request to the local terminal for the data blocks of the BT resource.

Abstract: Device and system applied to a bit torrent (BT) system are provided. By directly acquiring the data traffic from a network export device, and responding to the target peer acquisition requests, the target peer acquisition requests are ensured to receive quick response. Also, preferred peer nodes, such as other BT client terminals or cache servers that have physical locations close to and/or share a same network operator with the target BT client terminal, or cache servers that cache all requested resources are selected according to a preset policy to respond the target peer acquisition requests.

Abstract: Method, server, and system for data stream redirecting are provided. The method is applied to a service node and includes: redirecting a data stream based on a first global database, wherein the first global database includes at least one piece of destination address information and application identities corresponding to the at least one piece of destination address information; based on destination address information of data streams that traverse within a first preset period and application identities corresponding to the destination address information, determining variance information of the first global database; uploading the variance information to a central node; updating, by the central node, the first global database based on variance information uploaded by at least one service node, to generate a second global database; and acquiring the second global database from the central node and, based on the second global database, redirecting the data stream.

Abstract: The disclosure provides a method and a device for acquiring bit torrent (BT) resource information, and belongs to the field of data transmission technology. According to the embodiments of the present disclosure, when interacting with a peered terminal for exchanging the data of a BT resource, in the case that a local terminal does not have the metadata of the BT resource, the local terminal, after performing the BT protocol handshake, determines the number of data slices of the BT resource based on the bitmap A of the BT resource sent by the peered terminal, and then a NOT operation of the bitmap A is performed, and the bitmap B obtained through the NOT operation is fed back to the peered terminal to trigger the peered terminal to send an acquisition request to the local terminal for the data blocks of the BT resource. As such, the size of the data slice of the BT resource can be predicted according to the data-block acquisition request, such that the resource information of the BT resource can be obtained.

Abstract: The present disclosure discloses a layer-2 dedicated line network system and a configuration method. The layer-2 dedicated line network system includes a system switch and a POP server, wherein the system switch is connected to the POP server on a same side, and the POP servers on different sides are connected by one or more layer-2 tunnels, where each port of the POP server is assigned a link cost value, and where the ports connecting the different layer-2 tunnel have different link cost values. When only one layer-2 tunnel is in a forwarding state at a time and the layer-2 tunnel in the forwarding state is unavailable, a target layer-2 tunnel is selected from available layer-2 tunnels in accordance with the assigned link cost values and the target layer-2 tunnel is set in the forwarding state.

Abstract: A route selection method, a route selection system, a network acceleration node, and a network acceleration system are provided. The route selection method comprises detecting, by an ingress network acceleration node, a link delay from the ingress network acceleration node to each egress network acceleration node, and determining whether each egress network acceleration node is available; obtaining, by the ingress network acceleration node, from an available egress network acceleration node, a link delay from the available egress network acceleration node to a source site IP; and selecting a desired route from the ingress network acceleration node to the source site IP based on a link delay from the ingress network acceleration node to an available egress network acceleration node and a link delay from the available egress network acceleration node to the source site IP.

Abstract: The present disclosure provides a method and a device for transmitting data traffic. The method includes detecting network transmission quality of all transmission paths reaching a target server by an entry proxy device; selecting and recording a plurality of alternative transmission paths from the all transmission paths by the entry proxy device according to the network transmission quality; when receiving data traffic directed to the target server, selecting a target transmission path from a plurality of recorded transmission paths by the entry proxy device according to a client identifier carried by the data traffic; and transmitting the data traffic through the target transmission path by the entry proxy device.

Abstract: A route selection method, a route selection system, a network acceleration node, and a network acceleration system are provided. The route selection method comprises detecting, by an ingress network acceleration node, a link delay from the ingress network acceleration node to each egress network acceleration node, and determining whether each egress network acceleration node is available; obtaining, by the ingress network acceleration node, from an available egress network acceleration node, a link delay from the available egress network acceleration node to a source site IP; and selecting a desired route from the ingress network acceleration node to the source site IP based on a link delay from the ingress network acceleration node to an available egress network acceleration node and a link delay from the available egress network acceleration node to the source site IP.