Multiplex communications – Wide area network – Packet switching
Patent
1990-05-16
1992-08-04
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 61, 370 8513, 370 941, H04J 324
Patent
active
051365804
ABSTRACT:
An apparatus and method for learning and filtering destination and source addresses in a local area network (LAN) system is provided to facilitate the transfer of information packets from one local area network to another. The apparatus provides a link between two (or more) remotely located LANS through the use of a LAN bridge. The apparatus has a LAN controller interface, a microprocessor, a state machine and one or more content addressable memories which function to monitor an information packet received from the LAN. One such apparatus is connected to each of the LANs to be interfaced and each of these apparatus to each other in order to communicate messages between the LANs. Upon detection of an information packet, the apparatus examines both the source and destination addresses of the packet. The source address is compared to a dynamically generated table of source addresses and then compared to the incoming destination address. If the destination address is found in the table of source addresses, than the packet is destined for a node on the local LAN and thus will not be sent over the bridge between the two LANs. If, on the other hand, the destination address is not in the table, the packet is forwarded to the remote LAN.
REFERENCES:
patent: 4597078 (1986-06-01), Kempf
patent: 4627052 (1986-12-01), Hoare et al.
patent: 4706081 (1987-11-01), Hart et al.
patent: 4715030 (1987-12-01), Koch et al.
patent: 4831620 (1989-05-01), Conway et al.
patent: 5027350 (1991-06-01), Marshall
Freitas AnneMarie
Freitas Mark J.
Gocht Russell C.
Videlock Gary B.
Hsu Alpus H.
Microcom Systems, Inc.
Olms Douglas W.
LandOfFree
Apparatus and method for learning and filtering destination and does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for learning and filtering destination and , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for learning and filtering destination and will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-784783