Method, device, and routing system for data transmission of network virtualization

Patent metadata

Field	Value
Publication number	US-9628295-B2
Application number	US-201514819187-A
Country	US
Kind code	B2
Filing date	Aug 5, 2015
Priority date	Feb 6, 2013
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

A method resolves connectivity of services inside a network virtualization system when a virtual cluster system supports unicast IP, L2VPN, and L3VPN services, so that the software network virtualization system can support various types of services efficiently and with high quality. The method includes: creating, on a control device, a virtualized remote logical interface for an external interface of a remote access node; identifying, by the control device according to a service configured on the virtualized remote logical interface, a service type of the service, and generating virtual link forwarding entries of the remote access node and a core aggregation node; and sending, by the control device, the virtual link forwarding entry to the remote access node and the core aggregation node, so as to set up a virtual link between the core aggregation node and the remote access node.

First claim

What is claimed is:

1. A method for data transmission of network virtualization, comprising:
creating, on a core aggregation node, a virtualized remote logical interface for an external interface of a remote access node, wherein the external interface of the remote access node is an interface that is configured to connect to another network device;
identifying, by the core aggregation node according to a service configured on the virtualized remote logical interface, a service type of the service, and generating virtual link forwarding entries of the remote access node and the core aggregation node, wherein the virtual link forwarding entry comprises a virtual link forwarding entry of the core aggregation node and a virtual link forwarding entry of the remote access node, and wherein an interface of an attachment circuit in the virtual link forwarding entry of the core aggregation node is the virtualized remote logical interface;
storing, by the core aggregation node, the virtual link forwarding entry of the core aggregation node; and
sending, by the core aggregation node, the virtual link forwarding entry of the remote access node to the remote access node, so as to set up a virtual link between the core aggregation node and the remote access node.

2. The method according to claim 1 , further comprising:
generating, by the core aggregation node, a service forwarding entry of the core aggregation node, by performing centralized calculation according to the service configured on the virtualized remote logical interface and a service protocol of the service to be processed; and
storing the service forwarding entry, wherein an outbound interface of the service forwarding entry is the virtualized remote logical interface.

3. The method according to claim 2 , wherein the service forwarding entry comprises at least one of a unicast Internet Protocol (IP) routing and forwarding entry, a Layer 3 virtual private network (L3VPN) routing and forwarding entry, or a Layer 2 virtual private network (L2VPN) forwarding entry.

4. The method according to claim 1 , wherein the sending, by the core aggregation node, the virtual link forwarding entry to the remote access node comprises:
sending, by the core aggregation node, the virtual link forwarding entry to the remote access node through a control channel between the remote access node and the core aggregation node.

5. The method according to claim 1 , wherein the core aggregation node comprises a core aggregation node as a main frame and a core aggregation node as a backup frame; and
wherein the sending, by the core aggregation node, the virtual link forwarding entry to the remote access node comprises sending, by the core aggregation node as the main frame, the virtual link forwarding entry to the remote access node and to the core aggregation node as the backup frame.

6. The method according to claim 5 , further comprising:
setting, by the core aggregation node as the main frame, a first routing entry in a first service forwarding entry that is generated for the core aggregation node as the main frame as a primary route;
storing the first service forwarding entry;
setting, by the core aggregation node as the main frame, a second routing entry in a second service forwarding entry that is generated for the core aggregation node as the backup frame as a secondary route; and
sending the second service forwarding entry to the core aggregation node as the backup frame.

7. A control device, comprising:
at least one communications interface;
a processor connected to the at least one communications interface;
a non-transitory computer readable medium connected to the processor by a data bus, the non-transitory computer readable medium having instructions stored thereon that, when executed by the processor, cause the processor to:
create, on the control device, a virtualized remote logical interface for an external interface of a remote access node, wherein the external interface of the remote access node is an interface that is configured to connect to another network device;
identify, according to a service configured on the virtualized remote logical interface, a service type of the service, and generate virtual link forwarding entries of the remote access node and a core aggregation node, wherein the virtual link forwarding entry comprises a virtual link forwarding entry of the core aggregation node and a virtual link forwarding entry of the remote access node, wherein an interface of an attachment circuit in the virtual link forwarding entry of the core aggregation node is the virtualized remote logical interface, and wherein an interface of an attachment circuit in the virtual link forwarding entry of the remote access node is the external interface; and
send the virtual link forwarding entry to the remote access node and to the core aggregation node through the at least one communications interface, so as to set up a virtual link between the core aggregation node and the remote access node.

8. The control device according to claim 7 , wherein the non-transitory computer readable medium further has instructions stored thereon that, when executed by the processor, cause the processor to:
generate a service forwarding entry of the core aggregation node by performing centralized calculation according to the service configured on the virtualized remote logical interface and a service protocol of the service to be processed; and
send the service forwarding entry to the core aggregation node through the at least one communications interface, wherein an outbound interface of the service forwarding entry is the virtualized remote logical interface.

9. The control device according to claim 8 , wherein the service forwarding entry comprises at least one of a unicast Internet Protocol (IP) routing and forwarding entry, a Layer 3 virtual private network (L3VPN) routing and forwarding entry, or a Layer 2 virtual private network (L2VPN) forwarding entry.

10. The control device according to claim 7 , wherein the non-transitory computer readable medium further has instructions stored thereon that, when executed by the processor, cause the processor to:
send the virtual link forwarding entry to the core aggregation node through a control channel between the control device and the core aggregation node and through the at least one communications interface; and
send, by using the control device, the virtual link forwarding entry to the remote access node through a control channel between the remote access node and the core aggregation node.

11. The control device according to claim 7 , wherein the core aggregation node comprises a core aggregation node as a main frame and a core aggregation node as a backup frame;
wherein the core aggregation node as a main frame and the core aggregation node as a backup frame share the control device; and
wherein the non-transitory computer readable medium further has instructions stored thereon that, when executed by the processor, cause the processor to send the virtual link forwarding entry to the remote access node, to the core aggregation node as the main frame, and to the core aggregation node as the backup frame through the at least one communications interface.

12. The control device according to claim 11 , wherein the non-transitory computer readable medium further has instructions stored thereon that, when executed by the processor, cause the processor to:
set a first routing entry in a first service forwarding entry that is generated for the core aggregation node as the main frame as a primary route;
send the first service forwarding entry to the core aggregation node as the main frame thro

Assignees

• Huawei Tech Co Ltd

Inventors

• Wu Xiaoqian
• Hu Jiehui
• Yang Jie
• Wen Yuangui
• Wang Xinping

Classifications

• H04L45/245

  Link aggregation, e.g. trunking · CPC title

• H04L12/4675 Primary

  Dynamic sharing of VLAN information amongst network nodes (configuration of the network or of network elements H04L41/08) · CPC title

• H04L12/4641

  Virtual LANs, VLANs, e.g. virtual private networks [VPN] (LAN interconnection over a bridge based backbone H04L12/462; encapsulation techniques H04L12/4633; routing of packets H04L45/00; packet switches H04L49/00; virtual private networks for security H04L63/0272) · CPC title

• H04L41/0803

  Configuration setting · CPC title