Programmable address mapping matrix for secure networks

Details Programmable address mapping matrix for secure networks Programmable address mapping matrix for secure networks

1994-12-30

1999-08-17

Ton, Dang

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370401, H04J 326, H04J 336

Patent

active

059403926

ABSTRACT:
In a repeater having multiple ports and receiving at a source port a data packet containing a received address, an address mapping system including a content addressable memory (CAM) with address registers containing stored addresses, and an address mapping matrix coupled to said CAM, for perfectly mapping any of the address registers to any of the ports. According to one aspect of the invention, it operates in a repeater having an address compare and disrupt security system. The preferred embodiment of the present invention includes a content addressable memory having address registers containing stored individual and multicast addresses associated with each repeater port, and an address mapping matrix including a disrupt enable circuit associated with each port, for enabling the disruption of the data packet at that port when the received destination address does not match the associated stored addresses, and for disabling the disruption of the data packet at that port when the received destination address matches the stored address in a particular register and that particular register is mapped to that port via an address mapping register.

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"Lecture Notes In Computer Science, " Edited by Goos, G. and Hartmanis, J., "Local Area Network Security," Edited by Berson, T.A. and Beth, T., Workshop LANSEC '89, E.I.S.S. Karlsruhe, FRG, Apr. 3-6, 1989, pp. 31-52.
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