Method and Device for Transmitting Network Packet

Patent metadata

Field	Value
Publication number	US-2016173384-A1
Application number	US-201615053392-A
Country	US
Kind code	A1
Filing date	Feb 25, 2016
Priority date	Nov 25, 2013
Publication date	Jun 16, 2016
Grant date	—

Abstract

A method and a network device for transmitting a network packet. Priorities of services are differentiated, and service load sharing is performed on multiple ports according to a priority of a service and the service quality of different services is improved and user experience satisfaction is enhanced. The network device first acquires the network packet and the priority of the network packet, and sends the network packet through a network interface corresponding to the priority of the network packet, and when receiving the network packet sent by the network device, a switching device records a source port number, a source Internet Protocol (IP), a destination port number, and a destination IP of the network packet received on each physical port, and finds a physical port corresponding to a to-be-sent network packet from a record of the switching device, and sends the network packet through the physical port.

First claim

What is claimed is:

1 . A method for transmitting a network packet, comprising:
acquiring the network packet; acquiring a priority of the network packet according to a service type of the network packet; and sending the network packet through a first network interface corresponding to the priority of the network packet.

2 . The method according to claim 1 , wherein acquiring the priority of the network packet according to the service type of the network packet comprises:
identifying the service type of the network packet according to a source port number or a destination port number of the network packet; determining the priority of the network packet according to the service type of the network packet and a preset rule; and setting, for the network packet, a priority mark corresponding to the priority of the network packet.

3 . The method according to claim 2 , wherein setting, for the network packet, the priority mark corresponding to the priority of the network packet comprises setting a differentiated services code point in a type of service (TOS) identifier byte in a datagram of the network packet, wherein a value range that is of a code value of the differentiated services code point and corresponds to a priority is preset, and wherein the value range within which the code value of the differentiated services code point falls determines the priority of the network packet.

4 . The method according to claim 1 , wherein a network interface corresponding to the priority of the network packet is preset, wherein the priority of the network packet comprises at least two priorities, and wherein each priority corresponds to one or more network interfaces, or multiple priorities correspond to one network interface.

5 . The method according to claim 3 , wherein sending the network packet through the first network interface corresponding to the priority of the network packet comprises:
identifying the priority of the network packet according to the differentiated services code point in the TOS identifier byte in the datagram of the network packet; and sending the network packet through the first network interface corresponding to the priority of the network packet.

6 . The method according to claim 4 , wherein when the first network interface corresponding to the priority of the network packet is faulty, the method further comprises:
sending the network packet through a second network interface when the priority of the network packet further corresponds to the second network interface; and sending the network packet through a third network interface when the priority of the network packet corresponds to only the first network interface or when all network interfaces corresponding to the priority of the network packet are faulty, wherein a priority corresponding to the third network interface is lower than the priority of the network packet.

7 . The method according to claim 4 , wherein when the first network interface corresponding to the priority of the network packet is faulty and the priority of the network packet is a lowest priority, the method further comprises:
sending the network packet through a fourth network interface when the priority of the network packet further corresponds to the fourth network interface; and sending the network packet through a fifth network interface when the priority of the network packet corresponds to only the first network interface or all network interfaces corresponding to the priority of the network packet are faulty, and wherein a priority corresponding to the fifth network interface is higher than the priority of the network packet.

8 . A method for transmitting a network packet, comprising:
recording a source port number, a source Internet Protocol (IP), a destination port number, and a destination IP of a network packet received on each physical port; finding, according to a source IP of a to-be-sent network packet or a destination IP of the to-be-sent network packet, a link aggregation group that is used to send the to-be-sent network packet, wherein the link aggregation group is a group of physical ports that are connected to a same network device; comparing a source port number of the to-be-sent network packet and a destination port number of the to-be-sent network packet with recorded source port numbers and destination port numbers of network packets received on all physical ports in the link aggregation group to find a physical port corresponding to the to-be-sent network packet; and sending the to-be-sent network packet through the corresponding physical port.

9 . The method according to claim 8 , wherein comparing the source port number of the to-be-sent network packet and the destination port number of the to-be-sent network packet with recorded source port numbers and destination port numbers of network packets received on all physical ports in the link aggregation group to find the physical port corresponding to the to-be-sent network packet comprises:
comparing the source port number of the to-be-sent network packet and the destination port number of the to-be-sent network packet with the recorded source port numbers and destination port numbers of the network packets received on all the physical ports in the link aggregation group; and using the physical port that receives the network packet as the physical port corresponding to the to-be-sent network packet when the source port number of the to-be-sent network packet is same as the destination port number of the received network packet or the destination port number of the to-be-sent network packet is same as the source port number of the received network packet.

10 . The method according to claim 8 , wherein when the physical port corresponding to the to-be-sent network packet cannot be found, the method further comprises selecting any available physical port from the link aggregation group to send the to-be-sent network packet.

11 . A network device, comprising:
a processor; and a memory coupled to the processor, wherein the memory is configured to store a plurality of instructions, and wherein the instructions cause the processor to:
acquire a network packet;
acquire a priority of the network packet according to a service type of the network packet; and
send the network packet through a first network interface corresponding to the priority of the network packet.

12 . The network device according to claim 11 , wherein the instructions further cause the processor to:
identify the service type of the network packet according to a source port number of the network packet or a destination port number of the network packet; determine the priority of the network packet according to the service type of the network packet and a preset rule; and set, for the network packet, a priority mark corresponding to the priority of the network packet.

13 . The network device according to claim 12 , wherein the instructions further cause the processor to set a differentiated services code point in a type of service (TOS) identifier byte in a datagram of the network packet, wherein a value range that is of a code value of the differentiated services code point and corresponds to a priority is preset, and wherein the value range within which the code value of the differentiated services code point falls determines the priority of the network packet.

14 . The network device according to claim 11 , wherein a network interface corresponding to the priority of the network packet is preset, wherein the priority of the network packet comprises at least two priorities, and wherein each priority correspond

Assignees

• Huawei Tech Co Ltd

Inventors

• Zhu Guojun

Classifications

• H04L47/125 Primary

  by balancing the load, e.g. traffic engineering · CPC title

• H04L61/2007

  Electricity · mapped topic

• H04L69/22

  Parsing or analysis of headers · CPC title

• H04L61/5007

  Internet protocol [IP] addresses · CPC title

• H04L12/6418

  Hybrid transport · CPC title