Abstract: A device including a cable transceiver including cable electrical connections including data electrical connections and control electrical connections, and a hardware memory device, the hardware memory device storing a string identifying a cable and being electrically accessible from externally to the cable transceiver via the control electrical connections. The cable, in electrical connection with the cable electrical connections, may be included in the device. A device for verifying cable authenticity is also described, the device including interface hardware for interfacing a plurality of cables with the device, and verifier circuitry configured to verify that each of the plurality of cables is genuine based on a string stored in a hardware memory device included in each of the plurality of cables. Related apparatus and methods are also described.

Abstract: A device including a cable transceiver including cable electrical connections including data electrical connections and control electrical connections, and a hardware memory device, the hardware memory device storing a string identifying a cable and being electrically accessible from externally to the cable transceiver via the control electrical connections. The cable, in electrical connection with the cable electrical connections, may be included in the device. A device for verifying cable authenticity is also described, the device including interface hardware for interfacing a plurality of cables with the device, and verifier circuitry configured to verify that each of the plurality of cables is genuine based on a string stored in a hardware memory device included in each of the plurality of cables. Related apparatus and methods are also described.

Abstract: In accordance with principles of the invention, a frame removal mechanism for token ring networks is disclosed. The disclosed system uses strip delimiter frames. The system transmits one or more information frames onto a computer network. The system further transmits one or more strip delimiter frames onto the computer network after the information frame transmission. The system detects strip delimiter frames on the computer network, and strips information frames received from the computer network after the information frame transmission is begun and until one of the strip delimiter frames is detected.

Abstract: Frame processing apparatus, and a related method for its operation, for use in a station connected to a token ring network, to ensure rapid stripping of frames from the network without reference to source addresses in the frames, and in spite of the possible presence of extraneous no-owner frames on the network. The adverse effects of extraneous no-owner frames are avoided by any of three techniques. First, transmitted information frames are preceded by a start strip delimiter frame and followed by an end strip delimiter frame. The process strips all incoming frames (except tokens and ring initialization frames, which are specially handled), but does not count the stripped frames until the start strip delimiter frame is detected. Therefore, extraneous frames preceding the transmitted information frames will be stripped but not counted, and all of the transmitted frames will be stripped. In another approach, an estimated stripping time is used to terminate stripping.

Abstract: A system for stripping frames transmitted by a station on a token ring network is disclosed. During operation of the system, the station receives a grant of permission to transmit onto the network. In an example embodiment, the grant of permission is a token. After receipt of the grant of permission to transmit, the station transmits one or more information frames onto the network. Upon transmission of the information frames, the station stops forwarding frames received from the network, thus removing received frames from the network. Removing received frames from the network is referred to as `stripping`. Following transmission of the information frames, the station transmits an end strip delimiter frame onto the network. Upon receipt of the end strip delimiter frame, the station terminates stripping. In an example embodiment, the system is used in a bridge station, the bridge station connecting a first network with a second network.

Abstract: A system for stripping frames transmitted by a station on a token ring network is disclosed. During operation of the system, the station receives a grant of permission to transmit onto the network. In an example embodiment, the grant of permission is a token. After receipt of the grant of permission to transmit, the station transmits one or more frames onto the network. The station counts the number of frames transmitted onto the network. The count of frames transmitted onto the network is the `frame count`. Upon transmission of the frames, the station stops forwarding frames received from the network, thus removing received frames from the network. Removing received frames from the network is referred to as `stripping`. Following transmission of the information frames, the station counts the number of frames stripped from the network. The count of frames stripped from the network is the `strip count`. When the strip count equals the frame count, the station terminates stripping.

Abstract: A station transmits a sequence of one or more frames on a token ring, keeping count of the frames transmitted. At the end of the transmitted frame the station originates onto the ring one or more coded marker frames and finally transmits a token. After the station transmission is begun, the station strips from the ring all the frames it receives, decrementing its count for each properly stripped frame, until either its count is reduced to zero or one of its marker frames is detected.