Abstract: A method for sending a connection establishment request is provided, comprising: sending a parameter requesting message to a configuration server from an OpenFlow switch for obtaining connection parameters of an OpenFlow controller; receiving by the OpenFlow switch an Internet Protocol (IP) address and a set of OpenFlow controller connection parameters sent from the configuration server, the set of connection parameters comprising at least connection parameters of a first OpenFlow controller; sending a connection establishment request message to the first OpenFlow controller from the OpenFlow switch according to the IP address and the connection parameter of the first OpenFlow controller. An OpenFlow switch, a configuration server and a system for sending a connection establishment request are also provided. With the solutions provided in embodiments of the disclosure, the automatic connection establishment between the OpenFlow switch and the OpenFlow controller can be realized.

Abstract: The application provides a scheduling method, apparatus and system. A controller receives scheduling request information sent by a content source. The scheduling request information includes a constraint condition of non-real-time traffic transmission, and the constraint condition includes: information about a first address and information about a second address. A first forwarding path and a sending time for sending the traffic are determined according to the information about the first address, the information about the second address, and statistical information about network traffic. The controller sends a first message that includes a sending rate to the content source at the sending time, and the traffic is sent through the first forwarding path.

Abstract: A routing management method includes: receiving, by a network controller, a request for creating a Layer 2 Virtual Private Network, determining, according to routing information of each router in a public network and information about a connection between each local area network and the public network, path information of a tunnel that a packet between any two of the local area networks should pass by when being transmitted in the public network; determining, according to the path information of each tunnel, forwarding information that each router forwards a packet along each tunnel, and allocating, to each router that each tunnel passes by, a label and processing information that is for the label before each router forwards the packet; and sending each piece of routing control information to each router, so that each router forwards the packet. The method reduces a calculation overhead of a router in a public network.

Abstract: A method for sending a connection establishment request is provided, comprising: sending a parameter requesting message to a configuration server from an OpenFlow switch for obtaining connection parameters of an OpenFlow controller; receiving by the OpenFlow switch an Internet Protocol (IP) address and a set of OpenFlow controller connection parameters sent from the configuration server, the set of connection parameters comprising at least connection parameters of a first OpenFlow controller; sending a connection establishment request message to the first OpenFlow controller from the OpenFlow switch according to the IP address and the connection parameter of the first OpenFlow controller. An OpenFlow switch, a configuration server and a system for sending a connection establishment request are also provided. With the solutions provided in embodiments of the disclosure, the automatic connection establishment between the OpenFlow switch and the OpenFlow controller can be realized.

Abstract: The present disclosure relates to a method for enabling an Internet Protocol version 6 (IPv6) host to access an Internet Protocol version 4 (IPv4) host, a method for obtaining an IPv6 address prefix, and a translation apparatus. The method includes: obtaining, by a source host, an address prefix used for translating an IPv4 address into an IPv6 address; and translating, by a source host, an IPv4 address into an IPv6 address. The translation apparatus includes: a prefix obtaining unit and an address translating unit. The prefix obtaining unit is configured to obtain an address prefix used for translating an IPv4 address into an IPv6 address, and the address translating unit is configured to perform translation between IPv4 and IPv6 addresses.