Port misconfiguration detection

Patent metadata

Field	Value
Publication number	US-2025141739-A1
Application number	US-202418930642-A
Country	US
Kind code	A1
Filing date	Oct 29, 2024
Priority date	Oct 31, 2023
Publication date	May 1, 2025
Grant date	—

Abstract

Techniques are described for determining port misconfiguration between network devices. For example, a network management system comprises a memory and one or more processors in communication with the memory and configured to: obtain information associated with one or more ports of a plurality of network devices; determine, based on information associated with a port of a first network device of the plurality of network devices and information associated with a port of a second network device of the plurality of network devices that is connected to the port of the first network device, whether there is a port misconfiguration of the first network device or the second network device; and perform, based on the determination that there is a port misconfiguration of the first network device or the second network device, an action to remedy the port misconfiguration of the first network device or the second network device.

First claim

What is claimed is:

1 . A network management system comprising:
memory; and one or more processors in communication with the memory and configured to:
obtain information associated with one or more ports of a plurality of network devices;
determine, based on information associated with a port of a first network device of the plurality of network devices and information associated with a port of a second network device of the plurality of network devices that is connected to the port of the first network device, whether there is a port misconfiguration of the first network device or the second network device; and
perform, based on the determination that there is a port misconfiguration of the first network device or the second network device, an action to remedy the port misconfiguration of the first network device or the second network device.

2 . The network management system of claim 1 , wherein to determine the port misconfiguration of the first network device or the second network device, the one or more processors are configured to:
combine the information associated with the port of the first network device and the information associated with the port of the second network device; and determine a mismatch of one or more parameters of the combined information associated with the port of the first network device and the information associated with the port of the second network device.

3 . The network management system of claim 2 , wherein to determine the mismatch of one or more parameters of the combined information associated with the port of the first network device and the information associated with the port of the second network device, the one or more processors are configured to:
determine the mismatch of one or more parameters based on a connection hierarchy of the first network device and the second network device.

4 . The network management system of claim 2 , wherein to determine the mismatch of one or more parameters, the one or more processors are configured to determine whether there is a mismatch to one or more virtual local area network (VLAN) identifiers of the port of the first network device and one or more VLAN identifiers of the port of the second network device.

5 . The network management system of claim 4 , wherein to determine whether there is a mismatch to one or more VLAN identifiers of the port of the first network device and one or more VLAN identifiers of the port of the second network device, the one or more processors are configured to:
determine whether a number of the one or more VLAN identifiers of the port of the first network device is greater than a number of the one or more VLAN identifiers of the port of the second network device, wherein the first network device is a child network device and the second network device is a parent network device; and determine, based on determining that the number of the one or more VLAN identifiers of the port of the first device is greater than the number of the one or more VLAN identifiers of the port of the second network device, that there is a port misconfiguration of the first network device or the second network device.

6 . The network management system of claim 2 , wherein to determine the mismatch of one or more parameters, the one or more processors are configured to determine whether there is a mismatch to a maximum transmission unit (MTU) of the port of the first network device and an MTU of the port of the second network device.

7 . The network management system of claim 2 , wherein to determine the mismatch of one or more parameters, the one or more processors are configured to determine whether there is a mismatch to a mode of the port of the first network device and a mode of the port of the second network device.

8 . The network management system of claim 2 , wherein to determine the mismatch of one or more parameters, the one or more processors are configured to determine whether there is a mismatch to a duplex configuration of the port of the first network device and a duplex configuration of the port of a second network device.

9 . The network management system of claim 2 , wherein to determine the mismatch of one or more parameters, the one or more processors are configured to determine whether there is a mismatch to a power-over-Ethernet (POE) status of the port of the first network device and a PoE status of the port of the second network device.

10 . The network management system of claim 1 ,
wherein the first network device comprises an access point, wherein the second network device comprises a switch, and wherein to determine the port misconfiguration of the first network device or the second network device, the one or more processors are configured to: obtain, from the access point, wireless local area network (WLAN) information identifying a wireless network that one or more client devices access through the access point; determine, based on the WLAN information, one or more virtual local area networks (VLANs) associated with the wireless network; and determine whether there is a misconfiguration to a port of the access point or a port of the switch configured for the one or more VLANs associated with the wireless network.

11 . A method comprising:
obtaining, by a network management system, information associated with one or more ports of a plurality of network devices; determining, by the network management system and based on information associated with a port of a first network device of the plurality of network devices and information associated with a port of a second network device of the plurality of network devices that is connected to the port of the first network device, whether there is a port misconfiguration of the first network device or the second network device; and performing, by the network management system and based on the determination that there is a port misconfiguration of the first network device or the second network device, an action to remedy the port misconfiguration of the first network device or the second network device.

12 . The method of claim 11 , wherein determining the port misconfiguration of the first network device or the second network device comprises:
combining the information associated with the port of the first network device and the information associated with the port of the second network device; and determining a mismatch of one or more parameters of the combined information associated with the port of the first network device and the information associated with the port of the second network device.

13 . The method of claim 12 , wherein determining the mismatch of one or more parameters of the combined information associated with the port of the first network device and the information associated with the port of the second network device comprises:
determining the mismatch of one or more parameters based on a connection hierarchy of the first network device and the second network device.

14 . The method of claim 12 , wherein determining the mismatch of one or more parameters comprises determining whether there is a mismatch to one or more VLAN identifiers of the port of the first network device and one or more VLAN identifiers of the port of the second network device.

15 . The method of claim 14 , wherein determining whether there is a mismatch to one or more VLAN identifiers of the port of the first network device and one or more VLAN identifiers of the port of the second network device comprises:
determining whether a number of the one or more VLAN identifiers of the port of the first network device is gre

Assignees

• Juniper Networks Inc

Inventors

• Shamsundar Abhiram Madhugiri
• Wang Wenfeng
• Pallavi Priti
• Mehta Ruchit Rajkumar
• Shil Rajdeep

Classifications

• H04L41/0873

  Checking configuration conflicts between network elements · CPC title

• H04L41/12

  Discovery or management of network topologies · 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

• H04L41/0816 Primary

  the condition being an adaptation, e.g. in response to network events · CPC title

• H04L12/4679 Primary

  Arrangements for the registration or de-registration of VLAN attribute values, e.g. VLAN identifiers, port VLAN membership · CPC title