MAC address detection device for virtual routers
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United States of America Patent
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Oct 26, 2010
Issued Date -
N/A
app pub date -
Dec 30, 2005
filing date -
Dec 30, 2005
priority date (Note) -
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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.
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