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公开(公告)号：EP2788883A1
公开(公告)日：2014-10-15
申请号：EP12854618.1
申请日：2012-12-05
Applicant: Brocade Communications Systems, Inc.
Inventor： KURIAKOSE, Poulo , SABAA, Amr , HEGLAND, Ryan , DOOLEY, Andy , ADIRAJU, Siva , VUTUKURU, Amar , DESAI, Hiren
IPC: G06F15/16 , G06F15/173 , G06F15/177
CPC classification number: H04L29/08576 , H04L45/24 , H04L45/66 , H04L67/141 , H04L67/148 , H04L67/2876 , H04L69/14 , H04L69/16 , Y02D50/30
Abstract: In a network where there are two local area networks (LANs) connected over a wide area network (WAN) by paralleled LAN to WAN devices at each end of the WAN, Transmission Control Protocol (TCP) connections may be requested by a first near end LAN to WAN device and received at a first far end LAN to WAN device but the acknowledgement may be returned to a second far end LAN to WAN device. The second far end LAN to WAN device contacts the first far end LAN to WAN device and the TCP connection is moved to the second far end LAN to WAN device, which provides the acknowledgement to the first near end LAN to WAN device to complete the TCP connection. Similar operations occur during active TCP connection operation but with certain queued data being flushed during the TCP connection transfer.
Abstract translation: 在连接建立期间或在主动操作期间，TCP连接在并行设备和链路之间移动。
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Patent Agency Ranking
公开(公告)号：EP2789136A1
公开(公告)日：2014-10-15
申请号：EP12855788.1
申请日：2012-12-05
Applicant: Brocade Communications Systems, Inc.
Inventor： HEGLAND, Ryan , SABAA, Amr , ADIRAJU, Siva
IPC: H04L12/70
CPC classification number: H04L47/33 , H04L47/193 , H04L47/27 , H04L47/40 , H04L69/163
Abstract: The WAN optimization devices delay ACK until the ACK is actually received from the target while opening up the TCP window. When the ACK is received and forwarded, the TCP window is reduced in size. If there are mirrored WAN optimization devices, the original WAN optimization device sends the datagram across the WAN and at the same time sends the datagram to the mirroring WAN optimization device. When the mirroring WAN optimization device ACKs the mirrored datagram, the original WAN optimization device ACKs the host. When the ACK across the WAN is received, the mirroring WAN optimization device gets the ACK forwarded and deletes the mirrored datagram. On a loss of a device, the TCP connection transitions to the mirroring WAN optimization device, which closes the LAN TCP window and transmits all un-ACKed data. Then upon success the mirroring WAN optimization device reopens the LAN TCP window.
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公开(公告)号：EP2788888B1
公开(公告)日：2018-07-18
申请号：EP12855672.7
申请日：2012-12-05
Applicant: Brocade Communications Systems, Inc.
Inventor： HEGLAND, Ryan , SABAA, Amr , ADIRAJU, Siva
CPC classification number: H04L69/163 , H04L69/14 , H04L69/40
Abstract: The WAN optimization devices delay ACK until the ACK is actually received from the target while opening up the TCP window. When the ACK is received and forwarded, the TCP window is reduced in size. If there are mirrored WAN optimization devices, the original WAN optimization device sends the datagram across the WAN and at the same time sends the datagram to the mirroring WAN optimization device. When the mirroring WAN optimization device ACKs the mirrored datagram, the original WAN optimization device ACKs the host. When the ACK across the WAN is received, the mirroring WAN optimization device gets the ACK forwarded and deletes the mirrored datagram. On a loss of a device, the TCP connection transitions to the mirroring WAN optimization device, which closes the LAN TCP window and transmits all un-ACKed data. Then upon success the mirroring WAN optimization device reopens the LAN TCP window.
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公开(公告)号：EP2788883B1
公开(公告)日：2017-01-11
申请号：EP12854618.1
申请日：2012-12-05
Applicant: Brocade Communications Systems, Inc.
Inventor： KURIAKOSE, Poulo , SABAA, Amr , HEGLAND, Ryan , DOOLEY, Andy , ADIRAJU, Siva , VUTUKURU, Amar , DESAI, Hiren
IPC: H04L29/06 , H04L12/771
CPC classification number: H04L29/08576 , H04L45/24 , H04L45/66 , H04L67/141 , H04L67/148 , H04L67/2876 , H04L69/14 , H04L69/16 , Y02D50/30
Abstract: In a network where there are two local area networks (LANs) connected over a wide area network (WAN) by paralleled LAN to WAN devices at each end of the WAN, Transmission Control Protocol (TCP) connections may be requested by a first near end LAN to WAN device and received at a first far end LAN to WAN device but the acknowledgement may be returned to a second far end LAN to WAN device. The second far end LAN to WAN device contacts the first far end LAN to WAN device and the TCP connection is moved to the second far end LAN to WAN device, which provides the acknowledgement to the first near end LAN to WAN device to complete the TCP connection. Similar operations occur during active TCP connection operation but with certain queued data being flushed during the TCP connection transfer.
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公开(公告)号：EP2789136B1
公开(公告)日：2018-04-25
申请号：EP12855788.1
申请日：2012-12-05
Applicant: Brocade Communications Systems, Inc.
Inventor： HEGLAND, Ryan , SABAA, Amr , ADIRAJU, Siva
CPC classification number: H04L47/33 , H04L47/193 , H04L47/27 , H04L47/40 , H04L69/163
Abstract: The WAN optimization devices delay ACK until the ACK is actually received from the target while opening up the TCP window. When the ACK is received and forwarded, the TCP window is reduced in size. If there are mirrored WAN optimization devices, the original WAN optimization device sends the datagram across the WAN and at the same time sends the datagram to the mirroring WAN optimization device. When the mirroring WAN optimization device ACKs the mirrored datagram, the original WAN optimization device ACKs the host. When the ACK across the WAN is received, the mirroring WAN optimization device gets the ACK forwarded and deletes the mirrored datagram. On a loss of a device, the TCP connection transitions to the mirroring WAN optimization device, which closes the LAN TCP window and transmits all un-ACKed data. Then upon success the mirroring WAN optimization device reopens the LAN TCP window.
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公开(公告)号：EP2788888A1
公开(公告)日：2014-10-15
申请号：EP12855672.7
申请日：2012-12-05
Applicant: Brocade Communications Systems, Inc.
Inventor： HEGLAND, Ryan , SABAA, Amr , ADIRAJU, Siva
IPC: G06F15/16
CPC classification number: H04L69/163 , H04L69/14 , H04L69/40
Abstract: The WAN optimization devices delay ACK until the ACK is actually received from the target while opening up the TCP window. When the ACK is received and forwarded, the TCP window is reduced in size. If there are mirrored WAN optimization devices, the original WAN optimization device sends the datagram across the WAN and at the same time sends the datagram to the mirroring WAN optimization device. When the mirroring WAN optimization device ACKs the mirrored datagram, the original WAN optimization device ACKs the host. When the ACK across the WAN is received, the mirroring WAN optimization device gets the ACK forwarded and deletes the mirrored datagram. On a loss of a device, the TCP connection transitions to the mirroring WAN optimization device, which closes the LAN TCP window and transmits all un-ACKed data. Then upon success the mirroring WAN optimization device reopens the LAN TCP window.
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