MAC address detection device for virtual routers
US7822033B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2005 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Feb 3, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2101/622
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A MAC address detector for a networking device is provided, the device configured to present different virtual routers to different end users, classes of service or packets. First addressing logic provides a pool of N potential MAC addresses of the device, wherein N is an integer of one or more. Second addressing logic generates a (N+1)th potential MAC address of the device by combining a permanent or semi-permanent identifier of the device, for example, a chassis identifier, with a virtual router identifier determined responsive to the packet. Comparison logic indicates which if any of the (N+1) potential MAC addresses match the destination MAC address from the packet. Enable logic selectively activates responsive to the packet any of the (N+1) potential MAC addresses. Detection logic asserts a device address detection signal if any activated ones of the (N+1) potential MAC addresses match the destination address from the packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.