Detection of mismatched VLAN tags
US7796613B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2006 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Jul 22, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network device, system and method are provided for detection of mismatched VLAN tags on a port of a network chip and a packet. The network device includes a processor, a memory and a network chip having a number of network ports. One of the ports is tagged with a VLAN membership of at least one particular VLAN and configured to receive a packet. Computer executable instructions are storable in the memory and executable by the processor to detect whether the packet received at the port is untagged with any VLAN. Upon detecting that the packet is untagged with any VLAN, the computer executable instructions determine whether the untagged packet is intended to be untagged on the particular VLAN at the port. If the packet is not intended to be untagged on the particular VLAN at the port, the computer executable instructions send a misconfiguration alert signal to a network management program, and determine either the packet is misconfigured to be sent to the network chip without a VLAN tag or the port of the network chip is misconfigured to be tagged with the particular VLAN.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.