US 9,853,856 B2Granted

Method and device for protecting service reliability and network virtualization system

AssigneeHuawei Technologies Co., Ltd.

InventorsJiehui Hu, Jie Yang, Xiaoqian Wu, Xinping Wang

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Abstract

Disclosed is a method and a device for protecting service reliability, and the service reliability in the network virtualization system provided by the present disclosure may be ensured. In an embodiment of the present disclosure, a master node having a control function obtains the current service type information and notifies a slave node of the current service type information, for enabling the slave node to determine a main virtual link and a backup virtual link according to the service type information and to perform the failure detection, and when detecting that the main virtual link has failure and the backup virtual link has no failure, a service data message is switched to be transmitted on the backup virtual link, to ensure non-interrupted transmission of a service data message in a brand-new system architecture provided by the present disclosure, so as to ensure the service reliability.

Claims24

Dependent claims

A method for protecting service reliability, wherein the method is applied to a network virtualization system based on control and forwarding separation, the network virtualization system comprises master nodes and a slave node, the slave node is controlled by a pair of mutually main-backup master nodes, the pair of mutually main-backup master nodes comprise a main master node and a backup master node, a first virtual link is arranged between the slave node and the main master node controlling the slave node, a second virtual link is arranged between the slave node and the backup master node controlling the slave node, and the method comprises:

receiving, by the slave node, service type information sent by a master node controlling the slave node through a control channel between the master node controlling the slave node and the slave node, wherein the service type information comprises L2VPN and L3VPN, wherein the master node is the main master node or the backup master node;
determining, by the slave node, a main virtual link and a backup virtual link according to the service type information, wherein the main virtual link is a virtual link of the first virtual link and the second virtual link, the main virtual link is a virtual link used for transmitting a service data message, and the backup virtual link is the other virtual link rather than the main virtual link of the first virtual link and the second virtual link;
detecting, by the slave node, whether the main virtual link and the backup virtual link have failure;
and
in response to detecting that the main virtual link has failure and the backup virtual link has no failure, switching, by the slave node, to transmit the service data message on the backup virtual link.

2 more elements

obtaining, by a master node, service type information, wherein the service type information comprises L2VPN and L3VPN, wherein the master node is the main master node or the backup master node;
and
sending the service type information to the slave node controlled by the master node through a control channel between the master node and the slave node controlled by the master node, for enabling the slave node controlled by the master node to determine a main virtual link and a backup virtual link according to the received service type information, and perform failure detection on the determined main virtual link and the backup virtual link.

A slave node, wherein the slave node is applied to a network virtualization system based on control and forwarding separation, the network virtualization system comprises master nodes and a slave node, the slave node is controlled by a pair of mutually main-backup master nodes, the pair of mutually main-backup master nodes comprises a main master node and a backup master node, a first virtual link is arranged between the slave node and the main master node controlling the slave node, a second virtual link is arranged between the slave node and the backup master node controlling the slave node, and the slave node comprises:

a processor;
and
a non-transitory computer-readable storage medium including computer-executable instructions executed by the processor to perform:
receiving service type information sent by a master node controlling the slave node through a control channel between the master node controlling the slave node and the slave node, wherein the service type information comprises L2VPN and L3VPN, wherein the master node is the main master node or the backup master node;
determining a main virtual link and a backup virtual link according to the service type information received by the receiving unit;
wherein the main virtual link is a virtual link of the first virtual link and the second virtual link, the main virtual link is a virtual link used for transmitting a service data message, and the backup virtual link is the other virtual link rather than the main virtual link of the first virtual link and the second virtual link;
detecting whether the main virtual link and the backup virtual link determined by the determining unit have failure;
and
when the detecting unit detects that the main virtual link has failure and the backup virtual link has no failure, switching to transmit the service data message on the backup virtual link.

6 more elements

A master node, wherein the master node is applied to a network virtualization system based on control and forwarding separation, the network virtualization system comprises master nodes and a slave node, the slave node is controlled by a pair of mutually main-backup master nodes, the pair of mutually main-backup master nodes comprises a main master node and a backup master node, a first virtual link is arranged between the slave node and the main master node controlling the slave node, a second virtual link is arranged between the slave node and the backup master node controlling the slave node, and the master node comprises:

a processor;
and
a non-transitory computer-readable storage medium including computer-executable instructions executed by the processor to perform:
obtaining service type information, wherein the service type information comprises L2VPN and L3VPN, wherein the master node is the main master node or the backup master node;
and
sending the service type information obtained by the first obtaining unit to the slave node controlled by the master node through a control channel between the master node and the slave node controlled by the master node, for enabling the slave node controlled by the master node to determine a main virtual link and a backup virtual link according to the received service type information, and perform failure detection on the determined main virtual link and the backup virtual link.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/879,845Filed 9 Oct 2015 · continuation
Priority: 9 Apr 2013
Published: US 2016/0036625 A14 Feb 2016
Granted: 26 Dec 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H04L 41/40
Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks: using virtualisation of…
H04L 12/4633
Interconnection of networks: interconnection of networks using encapsulation techniques, e.g. tunneling
H04L 41/0663
Using network fault recovery: performing the actions predefined by failover planning, e.g. switching to standby network elements
H04L 41/0668
Using network fault recovery: by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure