Optimizing application performance in hierarchical sd-wan

Patent metadata

Field	Value
Publication number	US-2022182317-A1
Application number	US-202017110457-A
Country	US
Kind code	A1
Filing date	Dec 3, 2020
Priority date	Dec 3, 2020
Publication date	Jun 9, 2022
Grant date	—

Abstract

Systems and methods are provided for receiving bandwidth metrics from a plurality of routers on respective link routes in a network, compiling a link database including the bandwidth metrics of each respective link route in the network, selecting a first designated link path from the link database between a first router and a second router based on an application routing policy, the application routing policy being based on a routing metric, providing a first multiprotocol label switching label based on the first designated link path to the first router of the plurality of routers in the network, and restricting network traffic of the first router to the first designated link path provided in the first multiprotocol label switching label.

First claim

What is claimed is:

1 . A computer-implemented method comprising:
receiving bandwidth metrics from a plurality of routers on respective link routes in a network; compiling a link database including the bandwidth metrics of each respective link route in the network; selecting a first designated link path from the link database between a first router and a second router based on an application routing policy, the application routing policy being based on a routing metric; providing a first multiprotocol label switching label based on the first designated link path to the first router of the plurality of routers in the network; and restricting network traffic of the first router to the first designated link path provided in the first multiprotocol label switching label.

2 . The computer-implemented method of claim 1 , wherein the bandwidth metrics received from the plurality of routers include at least one of latency, loss, jitter, and maximum transmission unit.

3 . The computer-implemented method of claim 1 , wherein the first multiprotocol label switching label includes a link label and a virtual private network label for segmentation.

4 . The computer-implemented method of claim 1 , wherein each respective link route is between a set of routers of the network, the set of routers including an edge router and a border router.

5 . The computer-implemented method of claim 1 , wherein the routing metric includes latency of the respective link routes in the network.

6 . The computer-implemented method of claim 1 , further comprising providing the first multiprotocol label switching label to the plurality of routers in the network to facilitate the restricting of the network traffic of the first router to the first designated link path.

7 . The computer-implemented method of claim 1 , wherein the selecting of the first designated link path from the link database between the first router and the second router is performed by an edge router of the network.

8 . A system comprising:
one or more processors; and at least one computer-readable storage medium having stored therein instructions which, when executed by the one or more processors, cause the system to:
receive bandwidth metrics from a plurality of routers on respective link routes in a network;
compile a link database including the bandwidth metrics of each respective link route in the network;
select a first designated link path from the link database between a first router and a second router based on an application routing policy, the application routing policy being based on a routing metric;
provide a first multiprotocol label switching label based on the first designated link path to the first router of the plurality of routers in the network; and
restrict network traffic of the first router to the first designated link path provided in the first multiprotocol label switching label.

9 . The system of claim 8 , wherein the bandwidth metrics received from the plurality of routers include at least one of latency, loss, jitter, and maximum transmission unit.

10 . The system of claim 8 , wherein the first multiprotocol label switching label includes a link label and a virtual private network label for segmentation.

11 . The system of claim 8 , wherein each respective link route is between a set of routers of the network, the set of routers including an edge router and a border router.

12 . The system of claim 8 , wherein the routing metric includes latency of the respective link routes in the network.

13 . The system of claim 8 , wherein the instructions which, when executed by the one or more processors, cause the system to provide the first multiprotocol label switching label to the plurality of routers in the network to facilitate the restriction of the network traffic of the first router to the first designated link path.

14 . The system of claim 8 , wherein the selection of the first designated link path from the link database between the first router and the second router is performed by an edge router of the network.

15 . A non-transitory computer-readable storage medium comprising:
instructions stored on the non-transitory computer-readable storage medium, the instructions, when executed by one or more processors, cause the one or more processors to:
receive bandwidth metrics from a plurality of routers on respective link routes in a network;
compile a link database including the bandwidth metrics of each respective link route in the network;
select a first designated link path from the link database between a first router and a second router based on an application routing policy, the application routing policy being based on a routing metric;
provide a first multiprotocol label switching label based on the first designated link path to the first router of the plurality of routers in the network; and
restrict network traffic of the first router to the first designated link path provided in the first multiprotocol label switching label.

16 . The non-transitory computer-readable storage medium of claim 15 , wherein the bandwidth metrics received from the plurality of routers include at least one of latency, loss, jitter, and maximum transmission unit.

17 . The non-transitory computer-readable storage medium of claim 15 , wherein the first multiprotocol label switching label includes a link label and a virtual private network label for segmentation.

18 . The non-transitory computer-readable storage medium of claim 15 , wherein the routing metric includes latency of the respective link routes in the network.

19 . The non-transitory computer-readable storage medium of claim 15 , wherein the instructions, when executed by the one or more processors, cause the one or more processors to provide the first multiprotocol label switching label to the plurality of routers in the network to facilitate the restriction of the network traffic of the first router to the first designated link path.

20 . The non-transitory computer-readable storage medium of claim 15 , wherein the selection of the first designated link path from the link database between the first router and the second router is performed by an edge router of the network.

Assignees

• Cisco Tech Inc

Inventors

• Thoria Samir
• Singh Ram Dular
• Kariyanahalli Praveen Raju
• Ponnuru Laxmikantha Reddy
• Lakshmikanthan Ramanathan

Classifications

• H04L45/50 Primary

  using label swapping, e.g. multi-protocol label switch [MPLS] · CPC title

• H04L45/22 Primary

  Alternate 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

• H04L45/04

  Interdomain routing, e.g. hierarchical routing · CPC title

• H04L12/4633

  Interconnection of networks using encapsulation techniques, e.g. tunneling · CPC title