Service-based traffic forwarding in virtual networks

• US 10,608,928 B2
• Filed: 02/23/2017
• Issued: 03/31/2020
• Est. Priority Date: 08/05/2016
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Zhang, Hang
• Primary Examiner(s): Kao, Jutai
• Application Number:
  US15/440,950
• Publication Number:
  US 20180041425A1
• Time in Patent Office: 1,132 Days
• Field of Search: None
• CPC Class Codes: H04L 12/4633 Interconnection of networks using encapsulation techniques, e.g. tunneling
• CPC Class Codes: H04L 12/4641 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 Class Codes: H04L 12/4645 Details on frame tagging routing of packets H04L45/00; support for virtual LAN H04L49/354
• CPC Class Codes: H04L 41/0803 Configuration setting
• CPC Class Codes: H04L 41/12 Discovery or management of network topologies
• CPC Class Codes: H04L 41/122 of virtualised topologies, e.g. software-defined networks [SDN] or network function virtualisation [NFV]
• CPC Class Codes: H04L 45/02 Topology update or discovery
• CPC Class Codes: H04L 45/30 Routing of multiclass traffic
• CPC Class Codes: H04L 45/302 Route determination based on requested QoS
• CPC Class Codes: H04L 45/586 of virtual routers
• CPC Class Codes: H04L 45/64 using an overlay routing layer
• CPC Class Codes: H04L 45/74 Address processing for routing
• CPC Class Codes: H04L 45/745 Address table lookup; Address filtering
• CPC Class Codes: H04L 67/34 involving the movement of software or configuration parameters network booting or remote initial program loading [RIPL] G06F9/4416
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 40/00 Communication routing or communication path finding
• CPC Class Codes: H04W 40/20 based on geographic position or location
• CPC Class Codes: H04W 48/18 : Selecting a network or a communication service
• CPC Class Codes: H04W 60/00 : Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 64/00 : Locating users or terminals or network equipment for network management purposes, e.g. mobility management
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/11 : Allocation or use of connection identifiers

Abstract

The present application provides a method for routing traffic from a user equipment (UE) to a service available on a network. In the method, a virtual router entity that services a virtual network available on the network receives a packet from the UE, the received packet including at least a destination ID and payload. The virtual router then forwards a location resolution request including the received destination ID to an associated connectivity manager operating on the network. The virtual router receives a location resolution response from the connectivity manager including at least a destination network node ID. The virtual router may then forward the packet to the destination network node ID.

Claims

1. A method for initializing a virtual network to transmit a data packet from a sending end point to a recipient end point connected to a virtual network (VN), the method comprising:

a virtual router receiving an uplink (UL) packet from the sending end point, the uplink packet including a VN ID, a sending end point name ID, and a payload;

the virtual router forwarding the UL packet to a receiving virtual router, the forwarded UL packet including the VN ID, the sending end point name ID, the payload, and a VN node ID identifying the tunnel connecting the virtual router and the receiving virtual router;

the receiving virtual router creating an entry in a VN downstream routing table that includes the sending end point name ID, and a virtual router ID; and

,

the receiving virtual router forwarding the forwarded UL packet to the recipient end point.

2. The method of claim 1, wherein the virtual network supports a plurality of services, and wherein the uplink packet and routing tables further include at least one of a service ID and a recipient end point name ID to identify the recipient end point.

3. The method of claim 1, wherein the receiving virtual router forwards the forwarded UL packet to the recipient end point by forwarding an updated UL packet that includes the VN ID, the sending end point name ID, the payload, and a second VN node ID identifying the tunnel connecting the receiving virtual router with a destination virtual router.

4. The method of claim 1, further comprising configuring the virtual router servicing the virtual network (VN) available on a network, the method comprising a Service Oriented Network-Slice Auto-Creator (SONAC) operative on the network:

defining a logical topology for the VN;

instantiating the virtual router at a location on the network and assigning a virtual router ID to the instantiated virtual router; and

,

configuring a VN tunnel by transmitting a VN tunnel configuration request to the virtual router, the VN tunnel configuration request including the VN ID, a tunnel ID, a QoS requirement for the tunnel, a terminating VN node ID at the other end of the tunnel, and a physical network node ID associated with the VN node serviced by the virtual router.

5. The method of claim 4 further comprising the SONAC:

receiving a configuration response from the virtual router, the configuration response including the virtual router ID, the SONAC address, and the VN ID.

6. The method of claim 1, further comprising configuring the virtual router servicing the virtual network (VN) available on a network, the method comprising a Service Oriented Network-Slice Auto-Creator (SONAC) operative on the network:

transmitting a VN routing table configuration request to the virtual router, the VN routing table configuration request including a virtual router ID, the VN ID, a number of VN destination nodes and, for each VN destination node, a destination VN node ID and an address of a network node associated with that VN destination node; and

,

receiving a VN routing table configuration response from the virtual router, the VN routing table configuration response confirming that the VN routing table has been updated for the VN ID.

7. A system for initializing a virtual network to transmit a data packet from a sending end point to a recipient end point connected to a virtual network (VN), the system comprising:

a virtual router configured to receive an uplink (UL) packet from the sending end point, the uplink packet including a VN ID, a sending end point name ID, and a payload;

the virtual router further configured to forward the UL packet to a receiving virtual router, the forwarded UL packet including the VN ID, the sending end point name ID, the payload, and a VN node ID identifying the tunnel connecting the virtual router and the receiving virtual router;

the receiving virtual router configured to create an entry in a VN downstream routing table that includes the sending end point name ID, and a virtual router ID; and

,

the receiving virtual router further configured to forward the forwarded UL packet to the recipient end point.

8. The system of claim 7, wherein the virtual network supports a plurality of services, and wherein the uplink packet and routing tables further include at least one of a service ID and a recipient end point name ID to identify the recipient end point.

9. The system of claim 7, wherein the receiving virtual router is further configured to forward the forwarded UL packet to the recipient end point by forwarding an updated UL packet that includes the VN ID, the sending end point name ID, the payload, and a second VN node ID identifying the tunnel connecting the receiving virtual router with a destination virtual router.

10. The system of claim 7, wherein the system is configured to configure the virtual router servicing the virtual network (VN) available on a network, wherein a Service Oriented Network-Slice Auto-Creator (SONAC) is operative on the network, the system configured to:

define a logical topology for the VN;

instantiate the virtual router at a location on the network and assigning a virtual router ID to the instantiated virtual router; and

,

configure a VN tunnel by transmitting a VN tunnel configuration request to the virtual router, the VN tunnel configuration request including the VN ID, a tunnel ID, a QoS requirement for the tunnel, a terminating VN node ID at the other end of the tunnel, and a physical network node ID associated with the VN node serviced by the virtual router.

11. The system of claim 10, wherein the SONAC is configured to receive a configuration response from the virtual router, the configuration response including the virtual router ID, the SONAC address, and the VN ID.

12. The system of claim 7, wherein the system is configured to configure the virtual router servicing the virtual network (VN) available on a network, wherein a Service Oriented Network-Slice Auto-Creator (SONAC) is operative on the network, the system configured to:

transmit a VN routing table configuration request to the virtual router, the VN routing table configuration request including a virtual router ID, the VN ID, a number of VN destination nodes and, for each VN destination node, a destination VN node ID and an address of a network node associated with that VN destination node; and

,

receive a VN routing table configuration response from the virtual router, the VN routing table configuration response confirming that the VN routing table has been updated for the VN ID.