Multiplex communications – Wide area network – Packet switching
Patent
1992-05-12
1993-10-05
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 8513, 370 8514, H04J 302
Patent
active
052512134
ABSTRACT:
A multiport source routing token ring bridge is provided which permits a single local area network bridge to interconnect to multiple remote bridges without limitations on the number of rings and bridges interspersed between a data packet's source and its intended destination. The bridge receives a packet and then scans the packet for ring-in information which matches the ring to which the bridge is attached. If this match is not successful, then the packet is not passed to the software and the address recognize and frame copy bits at the end of the packet are not set. If the match is successful, then the bridge number and next ring-in (or ring-out) segment information from the packet are used as addresses to a static RAM array. The array is preprogrammed with all valid bridge number and ring-out combinations which may be accessed by the multiport source routing bridge. If addressing of the array produces a valid indication, then the packet is passed to software for forwarding to the appropriate local area network or wide area network ports. On the other hand, if the address does not produce an indication that it can be reached through the bridge, then the hardware parses the packet to extract the next ring and bridge information, and repeats the above process until either a complete match is found and the packet is passed, or the information field is exhausted and the packet is finally rejected.
REFERENCES:
patent: 4901312 (1990-02-01), Hui et al.
patent: 4922503 (1990-05-01), Leone
patent: 5081621 (1992-01-01), Sugimoto
patent: 5086426 (1992-02-01), Tsukakoshi et al.
patent: 5088090 (1992-02-01), Yakoby
patent: 5130981 (1992-07-01), Murphy
patent: 5151891 (1992-09-01), Suzuki
Gloria Tom P.
Gocht Russell C.
Videlock Gary B.
Wainer Douglas
Microcom Systems, Inc.
Olms Douglas W.
Patel Ajit
LandOfFree
Multiport source routing token ring bridge apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multiport source routing token ring bridge apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiport source routing token ring bridge apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1010878