Accession Number : ADD012258

Title :   Survivable Local Area Network.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Katz,Joseph L ; Grund,Edward C ; Cope,Richard P ; Glick,Alvin L

Report Date : 11 Mar 1986

Pagination or Media Count : 9

Abstract : Enhanced availability and survivability of communications between geographically remote locations with a minimum of redundancy of transmission facilities and media is provided by a survivable bus network capable of providing continued interprocessor or other communications in the event of multiple bus outages. It consists of multiple busses, bus isolation device (BIDs) and two types of network interface processors (NIPs). The BIDs electrically isolate bus segements on either side of a connection so that if a fault occurs only the segment containing the fault will be affected. The first type of NIP connects to one bus and performs the usual functions of providing an electrical and software interface between the network and one or more subscriber processors. The second type is a bridge which performs these same functions but connects to two busses and has the capability to transfer traffic as it appears on either bus to the other. The network provides increased survivability in the event of failed segments but does not entail the expense of a fully redundant system. (Author)

Descriptors :   *PATENTS, *COMMUNICATIONS NETWORKS, *CIRCUIT INTERCONNECTIONS, *BUS CONDUCTORS, INTERCOMMUNICATION SYSTEMS, ELECTRIC CONNECTORS, FAULTS, COMMUNICATIONS TRAFFIC, ISOLATION, SURVIVABILITY, REMOTE AREAS

Subject Categories : Electrical and Electronic Equipment
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE