Abstract:
This application provides a congestion control method, a network device, and a network interface controller. In the congestion control method performed by a first intermediate device, the first intermediate device receives a first data packet sent by a sending device, sends the first data packet to a receiving device along a first path, receives a first acknowledgment packet that is sent by the receiving device and that is used for acknowledging the first data packet, and determines a congestion degree of the first path based on a congestion mark in the first acknowledgment packet. The first intermediate device changes a window value and sends the changed first acknowledgment packet to the sending device. According to the solution provided in this application, a speed of transmitting a data packet is adjusted based on a congestion degree of a communication path and a quantity of bytes of the data packet.
Abstract:
Provided are a method, an apparatus and a system for establishing an optical bypass. The method includes: a route controller sending an optical bypass establishment request carrying information about an ingress node, an egress node and a required bandwidth to an optical transmission controller; and setting a second flow forwarding entry corresponding to the optical bypass for the ingress node and the egress node and sending the set second flow forwarding entry to the ingress node and the egress node when receiving an establishment success notification sent by the optical transmission controller, the establishment success notification being used for indicating that the optical transmission controller has allocated the optical bypass according to the optical bypass establishment request, set a first flow forwarding entry corresponding the bypass for each optical transmission device in the optical bypass, and sent the set first flow forwarding entry to a corresponding optical transmission device.
Abstract:
The present invention provides a method for receiving information, a method for sending information, and apparatuses for the same. The method for receiving information includes: when a control plane apparatus is capable of managing a forwarding plane apparatus, receiving, by the forwarding plane apparatus, information used for packet forwarding path calculation sent by the control plane apparatus, where the forwarding plane apparatus and the control plane apparatus are located in a network with a network architecture featuring forwarding and control element separation. According to the technical solutions provided in embodiments of the present invention, the forwarding plane apparatus does not need to actively obtain the information used for packet forwarding path calculation before calculating a packet forwarding path based on the information used for packet forwarding path calculation.