Huawei Technologies Co., Limited

Future Wei Technologies, Inc.

Zhongjian Zhang

Min Zha

Jing Huang

Yuanlong Jiang

Ruobin Zheng

Ting Zou

Hongyu Li

Xushan Lu

Simon Perreault

This application discloses a method for obtaining a network slice. The method includes: receiving, by a control device, a slice request sent by a user, where the slice request includes an identifier, and the identifier is used to identify isolation information of a slice requested by the user; obtaining, by the control device, a network slice based on the identifier and a resource topology, where the resource topology is used to describe a network topology and isolation information of N elements in the network topology, the N elements include at least one of a node and a link, N is an integer greater than or equal to 1, and the network slice includes a node and a link that are required for implementing the slice.

Method, apparatus, and system for obtaining network slice

This application discloses a method for obtaining a network slice. The method includes: receiving, by a control device, a slice request sent by a user, where the slice request includes an identifier, and the identifier is used to identify an isolation level of a slice requested by the user; obtaining, by the control device, an isolation type of the slice based on the identifier; and creating, by the control device, a network slice based on the isolation type of the slice and a resource topology, where the resource topology is used to describe a network topology and isolation capabilities of N elements in the network topology, the N elements include at least one of a node and a link, N is an integer greater than or equal to 1, and the network slice includes a node and a link that are required for implementing the slice.

A method applicable to a commonest application scenario, the method includes: an AR receives a first packet sent in a unicast manner by a CGN. The first packet includes information for indicating Restart announce, the first packet's source address is the CGN's address, and the first packet's destination address is the AR's address; AR changes the first packet's destination address to an address of a CPE connected to the AR, to obtain a second packet, where the AR and the CPE are connected by using a Layer 2 network, and the CPE's address is a multicast address; and the AR sends the second packet. The method is used for quickly informing, after the CGN restarts or undergoes an active/standby switchover, the CPE that an exception occurs, for example, the CGN restarts or undergoes an active/standby switchover, so that a CGN has relatively small load when recreating NAT mapping.

Method, device, and system for quickly informing CGN exception

Disclosed is an apparatus comprising a network element (NE) configured to receive an Internet Group Management Protocol (IGMP) data packet in Internet Protocol version four (IPv4) format, translate the data packet into an Multicast Listener Discovery (MLD) data packet in Internet Protocol version six (IPv6) format, and forward the translated data packet. Also disclosed is an apparatus comprising a NE configured to receive an MLD data packet in IPv6 format, and translate the data packet into an IGMP data packet in IPv4 format. Also disclosed is a method comprising receiving a plurality of data packets, wherein the plurality of data packets comprise IGMP data packets and MLD data packets, translating at least one of the IGMP data packets into a MLD data packet, and translating at least one of the MLD data packets into an IGMP data packet.

IGMP/MLD translation

Embodiments of the present invention relate to a method for determining a multicast path, a method for receiving a data packet, and a router. The method for determining a multicast path includes: receiving, by a multicast address translation router, a first multicast join request packet, where the first multicast join request packet is an IPV4 packet, or the first multicast join request packet is an Internet Protocol version 6 IPV6 packet and a multicast address of the first multicast join request packet is an IPV6 multicast address obtained by performing Internet Protocol version translation on an IPV4 multicast address; and determining a shorter path between a first path and a second path. The multicast address translation router may determine the shorter path between the first path and the second path, thereby implementing a method for selecting a shorter path from the paths of different network types, which improves multicast efficiency.

Method for determining multicast path, method for receiving data packet, and router

A method for obtaining a multicast address. A first request message is sent to the EPG device to obtain program guide information. The program guide information is returned by the EPG device. A multicast address matching a current user terminal is obtained according to the program guide information. A multicast request message is sent according to the multicast address.

Technique for obtaining a multicast address that matches an IP version supported by a terminal

A data transmission method is provided. The method is used to transmit multiple data packets, and includes the following steps. Multiple acquired data packets are mapped to different sessions according to data header information of the data packets, in which each session corresponds to one or more data packets. A data packet is encapsulated into a session message, in which the encapsulated session message includes a session identifier of the session corresponding to the one or more data packets. Multiple session messages belonging to the same session are transmitted to a next network node through at least two tunnels in link layer.

Data transmission method, network node, and data transmission system

A management method for network address translation includes: obtaining a network resource section of a client and using state information of the network resource section; adjusting the network resource section according to the using state information of the network resource section, where the adjusted network resource section can provide a network resource for all connections of the client; establishing a network address translation entry for each connection of the client according to the adjusted network resource section; and establishing a corresponding log record for the network resource section.

Growing community of inventors

Shenzhen, China

Zhongjian Zhang