Determining security of local area network
US-2024372862-A1 · Nov 7, 2024 · US
Network system
US9531567B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9531567-B2 |
| Application number | US-201214408313-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 3, 2012 |
| Priority date | Jul 3, 2012 |
| Publication date | Dec 27, 2016 |
| Grant date | Dec 27, 2016 |
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- Title
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Abstract
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A communication apparatus for performing communication among cars of a train includes two or more connection ports, and two or more VLANs set through VLAN numbers in each connection port. When receiving a specific kind of packet for disabling the VLAN settings, the communication apparatus regards the set two or more VLANs as the same network with respect to the specific kind of packet and transfers the packet to a desired destination apparatus set in any one of the VLANs irrespective of the VLAN settings.
First claim
Opening claim text (preview).
The invention claimed is: 1. A network system comprising two or more communication apparatuses, the communication apparatuses being connected by a trunk link, each of the communication apparatuses for performing communication among cars of a train, including: two or more connection ports; and two or more VLANs set through VLAN numbers in each connection port, wherein each of the communication apparatuses determines, on the basis of only information for identifying a kind of communication given to a packet, whether a received packet is a specific kind of packet for disabling the VLAN settings, and, when receiving the specific kind of packet, each of the communication apparatuses disables the VLAN settings of each connection port with respect to the specific kind of packet, regards the set two or more VLANs as a same network, and transfers the packet to a desired destination apparatus. 2. A network system comprising two or more communication apparatuses, the communication apparatuses being connected by a trunk link, each of the communication apparatuses for performing communication among cars of a train, including: two or more connection ports; and two or more VLANs set through VLAN numbers in each connection port, wherein each of the communication apparatuses determines, on the basis of only information for identifying a kind of communication given to a packet, whether a received packet is a specific kind of packet for disabling the VLAN settings, and, when receiving the specific kind of packet, each of the communication apparatuses disables the VLAN settings of each connection port with respect to the specific kind of packet, regards the set two or more VLANs as a same network, and transfers the packet to a desired destination control apparatus for controlling apparatuses in the VLANs.
Assignees
Inventors
Classifications
- H04L12/4641Primary
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
Link aggregation, e.g. trunking · CPC title
Virtual switches · CPC title
- H04L12/465Primary
wherein a single frame includes a plurality of VLAN tags · CPC title
Dynamic sharing of VLAN information amongst network nodes (configuration of the network or of network elements H04L41/08) · CPC title
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- What does patent US9531567B2 cover?
- A communication apparatus for performing communication among cars of a train includes two or more connection ports, and two or more VLANs set through VLAN numbers in each connection port. When receiving a specific kind of packet for disabling the VLAN settings, the communication apparatus regards the set two or more VLANs as the same network with respect to the specific kind of packet and trans…
- Who is the assignee on this patent?
- Shigeeda Tetsuya, Honda Shingo, Mitsubishi Electric Corp
- What technology area does this patent fall under?
- Primary CPC classification H04L12/4641. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 27 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).