Ethernet switch, and apparatus and method for expanding port
US7599353B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2003 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | Dec 5, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/351
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An Ethernet switch having a function of expanding a port, apparatus and method for expanding a port are provided. A receiver receives a frame including predetermined port identification information. An information detector detects the predetermined port identification information and a terminal address of a terminal connected to a sub port corresponding to the predetermined port identification information. A storage unit stores an address table including the terminal address and the predetermined port identification information. A reader reads port identification information corresponding to a destination address included in the frame from the address table. A frame transformer adds the read port identification information to the frame. An output unit outputs the frame transformed by the frame transformer to a main port connected to a sub port corresponding to the read port identification information among main ports that can be connected to at least one sub port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.