End-to-end bidirectional keep-alive using virtual circuits
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04J-003/14
H04L-005/14
출원번호
US-0766208
(2001-01-18)
발명자
/ 주소
Natarajan, Shankar
Fowler, Gregory A.
출원인 / 주소
Cisco Technology, Inc.
대리인 / 주소
Beyer Weaver & Thomas, LLP
인용정보
피인용 횟수 :
15인용 특허 :
181
초록▼
The invention provides a method and system for sending and receiving end-to-end bidirectional keep-alive messages using virtual circuits. Nodes coupled to a network, such as a frame relay network, periodically exchange link-layer "keep-alive" messages which indicate information regarding configurati
The invention provides a method and system for sending and receiving end-to-end bidirectional keep-alive messages using virtual circuits. Nodes coupled to a network, such as a frame relay network, periodically exchange link-layer "keep-alive" messages which indicate information regarding configuration and status of the virtual circuit, as well as information regarding congestion at sending nodes. Nodes respond to received keep-alive messages, or to timed-out failure to receive keep-alive messages, with follow-on actions, such as attempting to reconnect when a virtual circuit fails. Keep-alive messages may be propagated across multiple networks of either similar or different architecture. Keep-alive messages include sent and received sequence numbers, thus providing receiving nodes with a technique for determining if any keep-alive messages have been lost. Keep-alive messages can also include information regarding configuration of the virtual circuit, status of the virtual circuit (including counts of recent keep-alive message failure or success), and congestion at the sending node.
대표청구항▼
The invention provides a method and system for sending and receiving end-to-end bidirectional keep-alive messages using virtual circuits. Nodes coupled to a network, such as a frame relay network, periodically exchange link-layer "keep-alive" messages which indicate information regarding configurati
The invention provides a method and system for sending and receiving end-to-end bidirectional keep-alive messages using virtual circuits. Nodes coupled to a network, such as a frame relay network, periodically exchange link-layer "keep-alive" messages which indicate information regarding configuration and status of the virtual circuit, as well as information regarding congestion at sending nodes. Nodes respond to received keep-alive messages, or to timed-out failure to receive keep-alive messages, with follow-on actions, such as attempting to reconnect when a virtual circuit fails. Keep-alive messages may be propagated across multiple networks of either similar or different architecture. Keep-alive messages include sent and received sequence numbers, thus providing receiving nodes with a technique for determining if any keep-alive messages have been lost. Keep-alive messages can also include information regarding configuration of the virtual circuit, status of the virtual circuit (including counts of recent keep-alive message failure or success), and congestion at the sending node. on", S. Ishikawa et al., OAA, 1998, p. 111-114. "High gain, broadband, 1。6μm Er3+ doped silica fibre amplifier", J. F. Massicott, et al., Electronics Letters, Sep. 27, 1990, vol. 26, No. 20, p. 1645-1646. International Preliminary Examination Report, Feb. 17, 2000. Ole Lumbolt et al., "Quantum Limited Noise Figure Operation of High Gain Erbium Doped Fiber Amplifiers", Aug. 1993, Journal of LightWave Technology, vol. 11, No. 8, pp. 1344-1352.
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