Dynamic creation of overlay network slices using border gateway protocol flow specifications

Patent metadata

Field	Value
Publication number	US-12237974-B2
Application number	US-202418623310-A
Country	US
Kind code	B2
Filing date	Apr 1, 2024
Priority date	Jan 3, 2023
Publication date	Feb 25, 2025
Grant date	Feb 25, 2025

Abstract

A network device may receive a border gateway protocol (BGP) flow specification route associated with creation of an overlay network slice in a network, and may create a new routing instance based on the BGP flow specification route. The network device may associate interfaces defined by the BGP flow specification route with virtual private network (VPN) members, and may determine VPN parameters based on the BGP flow specification route. The network device may advertise the VPN parameters within the network to cause the network to generate the overlay network slice.

First claim

What is claimed is:

1. A method, comprising:
creating, by a network device of a network, a routing instance based on a border gateway protocol (BGP) flow specification route,
wherein the BGP flow specification route includes data identifying rate limiting flows in a Layer 3 virtual private network (L3VPN), redirect flows in the L3VPN, and drop flows in the L3VPN;

assigning, by the network device, virtual private network (VPN) parameters based on the BGP flow specification route; and
advertising, by the network device, the VPN parameters within the network,
wherein advertisement of the VPN parameters within the network permits the L3VPN to be generated in the network.

2. The method of claim 1 , wherein the BGP flow specification route is associated with creation of an overlay network slice in the network.

3. The method of claim 2 , further comprising:
receiving the BGP flow specification route from a route reflector network device that generated the BGP flow specification route based on a request for creation of the overlay network slice.

4. The method of claim 2 , wherein the overlay network slice is generated via one or more traffic engineered transport tunnels in the network.

5. The method of claim 2 , wherein the overlay network slice is generated based on creation of a transport routing information base for the overlay network slice.

6. The method of claim 1 , wherein the BGP flow specification route includes network layer reachability information.

7. The method of claim 1 , wherein the VPN parameters include one or more of:
a parameter defining one or more interfaces,
a parameter defining one or more route targets,
a parameter defining one or more route distinguishers, or
a parameter defining traffic conditioning.

8. A network device, comprising:
one or more memories; and
one or more processors to:
create a routing instance based on a border gateway protocol (BGP) flow specification route,
wherein the BGP flow specification route includes data identifying rate limiting flows in a Layer 3 virtual private network (L3VPN), redirect flows in the L3VPN, and drop flows in the L3VPN;

assign virtual private network (VPN) parameters based on the BGP flow specification route; and
advertise the VPN parameters within a network associated with the network device,
wherein advertisement of the VPN parameters within the network permits the L3VPN to be generated in the network.

9. The network device of claim 8 , wherein the BGP flow specification route is associated with a creation of an overlay network slice in the network.

10. The network device of claim 9 , wherein the one or more processors are further to:
receive the BGP flow specification route from a route reflector network device that generated the BGP flow specification route based on a request for creation of the overlay network slice.

11. The network device of claim 9 , wherein the overlay network slice is generated via one or more traffic engineered transport tunnels in the network.

12. The network device of claim 9 , wherein the overlay network slice is generated based on creation of a transport routing information base for the overlay network slice.

13. The network device of claim 8 , wherein the VPN parameters include one or more of:
a parameter defining one or more interfaces,
a parameter defining one or more route targets,
a parameter defining one or more route distinguishers, or
a parameter defining traffic conditioning.

14. The network device of claim 8 , wherein the BGP flow specification route includes network layer reachability information.

15. A non-transitory computer-readable medium storing a set of instructions, the set of instructions comprising:
one or more instructions that, when executed by one or more processors of a network device, cause the network device to:
create a routing instance based on a border gateway protocol (BGP) flow specification route,
wherein the BGP flow specification route includes data identifying rate limiting flows in a Layer 3 virtual private network (L3VPN), redirect flows in the L3VPN, and drop flows in the L3VPN;

assign virtual private network (VPN) parameters based on the BGP flow specification route; and
advertise the VPN parameters within a network associated with the network device,
wherein advertisement of the VPN parameters within the network permits the L3VPN to be generated in the network.

16. The non-transitory computer-readable medium of claim 15 , wherein the BGP flow specification route is associated with a creation of an overlay network slice in the network.

17. The non-transitory computer-readable medium of claim 16 , wherein the one or more instructions further cause the network device to:
receive the BGP flow specification route from a route reflector network device that generated the BGP flow specification route based on a request for creation of the overlay network slice.

18. The non-transitory computer-readable medium of claim 16 , wherein the overlay network slice is generated via one or more traffic engineered transport tunnels in the network.

19. The non-transitory computer-readable medium of claim 16 , wherein the overlay network slice is generated based on creation of a transport routing information base for the overlay network slice.

20. The non-transitory computer-readable medium of claim 15 , wherein the VPN parameters include one or more of:
a parameter defining one or more interfaces,
a parameter defining one or more route targets,
a parameter defining one or more route distinguishers, or
a parameter defining traffic conditioning.

Assignees

• Juniper Networks Inc

Inventors

• Barth Jonathan C
• Beeram Vishnu Pavan
• Sangli Srihari Ramachandra
• Ramachandran Chandrasekar

Classifications

• H04L45/64

  using an overlay routing layer · CPC title

• H04L45/04

  Interdomain routing, e.g. hierarchical routing · 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

• H04L41/40

  using virtualisation of network functions or resources, e.g. SDN or NFV entities · CPC title

• H04L41/0893 Primary

  Assignment of logical groups to network elements · CPC title