Huawei Technologies Co., Limited

Cheng Sheng

Gang Yan

Shunwan Zhuang

Haibo Wang

Feng Yang

Kun Li

Haiyan Jin

Tao Tian

Hongwei He

Jianwei Guo

Weiheng Huang

A packet processing method, a network device, and a network system are provided, which are related to the field of communication technologies. According to the method, an intermediate node updates a source IP address of a packet based on an IP address that belongs to a local end in an endpoint IP address of a connection, and updates a destination IP address of the packet based on an IP address that belongs to a remote end in the endpoint IP address of the connection. Therefore, in a scenario in which an SR path crosses underlay transport networks in a plurality of different routing domains, a problem that a packet is discarded because a source IP address is always an IP address of a head end and URPF check fails is avoided.

Packet processing method, network device, and network system

Embodiments of this application disclose a tunnel establishment method. A first communication apparatus may receive first adjacency topology information sent by a second communication apparatus, and establish a first tunnel between the first communication apparatus and the second communication apparatus when the first adjacency topology information matches second adjacency topology information of the first communication apparatus. It can be learned that, in this solution, the first communication apparatus may locally store only the second adjacency topology information of the first communication apparatus. Compared with the conventional technology in which information about two endpoints of a tunnel needs to be configured on the first communication apparatus, configuration for the first communication apparatus is simpler.

Tunnel establishment method, information release method, and apparatus

A route determining method, apparatus, and a network device are disclosed. The method includes a first forwarding node receives routing information from a second forwarding node, and then sends a packet to a destination node based on the routing information. The routing information includes a node identifier of the destination node and at least one piece of indication information that is in a one-to-one correspondence with at least one third forwarding node, and the second forwarding node belongs to the at least one third forwarding node. The packet includes the at least one piece of indication information, and the at least one piece of indication information indicates to forward the packet along the at least one third forwarding node.

Route determining method and apparatus and network device

A method for communication between IP devices is provided. The method includes: receiving a dynamic routing protocol control packet sent by each of actual physical routers in a virtual router; obtaining a virtual IP address according to the dynamic routing protocol control packet; and using the virtual IP address as a next hop address and sending information to be sent to an external network to the virtual router. Further, a system and a router for communication between IP devices are also provided. Through the technical solutions of the present invention, when the master router is transited, the conversion of the internal dynamic routing protocol matches with the transiting of the master router performed by the virtual. Thus, it is ensured that the transited master router can receive the information sent by the internal router in a short time.

Method, system and router for communication between IP devices

A router is provided including a line card (LC), an active master board (AMB), a standby master board (SMB) and a LC for implementing a simple synchronization of a link state database (LSDB).

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Shenzhen, China

Cheng Sheng