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公开(公告)号：US20130177015A1
公开(公告)日：2013-07-11
申请号：US13347400
申请日：2012-01-10
IPC分类号： H04L12/56
CPC分类号： H04J3/0605 , H04L12/56 , H04L47/56
摘要： Methods and apparatus that may be used to provide timestamps to physical layer devices are provided. One method includes obtaining a time value from a clock associated with a physical layer device that is communicatively coupled to a primary data packet switch. The method further includes adding a processing time to the time value to generate a timestamp and transmitting the timestamp to a multiplexer circuit. The method further includes writing the timestamp in parallel from the multiplexer circuit to a plurality of external physical layer devices that are communicatively coupled to a secondary data packet switch and are located external to a housing of the secondary data packet switch.
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公开(公告)号：US07593319B1
公开(公告)日：2009-09-22
申请号：US10678977
申请日：2003-10-03
CPC分类号： H04L12/462 , H04L49/351 , H04L49/557
摘要： One embodiment disclosed relates to a method of fault recovery by a switch in a local area network. A link failure is detected at a port of the switch. In response to the link failure detection, a medium access control (MAC) address table of the switch is cleared. Clearing the address table causes a discovery process to fill the table to begin immediately. In addition, a link on another port of the switch may be dropped to propagate the link failure.
摘要翻译： 公开的一个实施例涉及通过局域网中的交换机进行故障恢复的方法。 在交换机的端口处检测到链路故障。 响应链路故障检测，交换机的介质访问控制（MAC）地址表被清除。 清除地址表会导致发现过程填写表以立即开始。 另外，交换机的另一个端口上的链路可能被丢弃，以传播链路故障。
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公开(公告)号：USRE45454E1
公开(公告)日：2015-04-07
申请号：US13271053
申请日：2011-10-11
CPC分类号： H04L12/56 , H04L49/351 , H04L49/557
摘要： One embodiment relates to a method of providing dual-homing in a layer 2 switch. A determination is made as to whether a link is available to an upstream network on for a currently active port. If the link is unavailable, then the layer 2 switch a) performs a switchover such that the currently active port becomes a newly passive port, and a currently passive port becomes a newly active port, b) clears entries in an address table of the layer 2 switch, and c) spoofs MAC addresses out of the newly active link. Other embodiments are also disclosed.
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公开(公告)号：US07512146B1
公开(公告)日：2009-03-31
申请号：US11431735
申请日：2006-05-10
摘要： One embodiment pertains to a switching device which is configured to provide multicast traffic management in a layer 2 network without layer 3 devices A specific embodiment relates to a method of implementing IGMP multicasting in a layer 2 network. IGMP packets are snooped by multiple switches in the layer 2 network. IGMP query messages are generated by each of the multiple switches. IGMP join report messages are forwarded by each of the multiple switches to all ports on which a querier is present. Other embodiments are also disclosed.
摘要翻译： 一个实施例涉及一种被配置为在没有第3层设备的第2层网络中提供组播流量管理的交换设备。具体实施例涉及在第2层网络中实现IGMP多播的方法。 IGMP数据包由第2层网络中的多个交换机进行监听。 IGMP查询消息由多个交换机生成。 IGMP加入报告消息由多个交换机转发到所有出现查询器的端口。 还公开了其他实施例。
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公开(公告)号：US07453825B1
公开(公告)日：2008-11-18
申请号：US11011413
申请日：2004-12-13
IPC分类号： H04L12/28
CPC分类号： H04L12/40182 , H04L45/02 , H04L45/026 , H04W24/04
摘要： One embodiment disclosed relates to a method of operating a network switch to provide wireless redundancy in a network. A keep-alive control packet is periodically transmitting over a wireless link, wherein the keep-alive control packet has a destination MAC address being that of the other switch on the other side of the wireless link, and wherein the keep-alive control packet is specifically designated to be identified as a keep-alive type packet. The specific designation may be implemented by having a source MAC address comprising a predetermined reserved MAC address. A key portion of one embodiment is the detection of the nearest neighbor in a point-to-point connection without confusion with another device elsewhere in the network. Other embodiments are also disclosed.
摘要翻译： 公开的一个实施例涉及一种操作网络交换机以在网络中提供无线冗余的方法。 保持活动控制分组通过无线链路周期性地发送，其中保持活动控制分组具有目标MAC地址，该目的地MAC地址是无线链路另一侧的另一个交换机的目的地MAC地址，并且其中保持活动控制分组是 具体指定为被识别为保持活动型分组。 可以通过具有包括预定的保留的MAC地址的源MAC地址来实现特定的指定。 一个实施例的关键部分是在点对点连接中检测最近邻居，而不与网络中其他地方的另一设备混淆。 还公开了其他实施例。
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公开(公告)号：US07079972B1
公开(公告)日：2006-07-18
申请号：US10649371
申请日：2003-08-27
CPC分类号： H01L23/34 , G06F1/206 , H01L2924/0002 , H05K1/0212 , H05K2201/10022 , H05K2201/10522 , H05K2201/1056 , H05K2201/10689 , H01L2924/00
摘要： One embodiment disclosed relates to an apparatus for temperature control of an integrated circuit on a circuit board. The apparatus includes a first resistor on the circuit board, a second resistor on the circuit board, and a heat conductive material. The heat conductive material is attached to both the first and second resistors and to a surface of a package containing the integrated circuit. Another embodiment disclosed relates to an apparatus that provides both cooling and heating functionality in order to maintain the operational temperature of the IC within an acceptable range.
摘要翻译： 公开的一个实施例涉及一种用于电路板上的集成电路的温度控制的装置。 该装置包括电路板上的第一电阻器，电路板上的第二电阻器和导热材料。 导热材料连接到第一和第二电阻器以及包含集成电路的封装的表面。 所公开的另一实施例涉及提供冷却和加热功能以便将IC的工作温度保持在可接受范围内的装置。
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公开(公告)号：US08855108B2
公开(公告)日：2014-10-07
申请号：US13347400
申请日：2012-01-10
CPC分类号： H04J3/0605 , H04L12/56 , H04L47/56
摘要： Methods and apparatus that may be used to provide timestamps to physical layer devices are provided. One method includes obtaining a time value from a clock associated with a physical layer device that is communicatively coupled to a primary data packet switch. The method further includes adding a processing time to the time value to generate a timestamp and transmitting the timestamp to a multiplexer circuit. The method further includes writing the timestamp in parallel from the multiplexer circuit to a plurality of external physical layer devices that are communicatively coupled to a secondary data packet switch and are located external to a housing of the secondary data packet switch.
摘要翻译： 提供了可用于向物理层设备提供时间戳的方法和设备。 一种方法包括从与通信地耦合到主数据分组交换机的物理层设备相关联的时钟获得时间值。 该方法还包括将处理时间添加到时间值以产生时间戳并将时间戳发送到多路复用器电路。 该方法还包括从多路复用器电路并行地将时间戳写入多个外部物理层设备，该多个外部物理层设备通信地耦合到辅助数据分组交换机并且位于辅助数据分组交换机的外壳外部。
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公开(公告)号：USRE43811E1
公开(公告)日：2012-11-20
申请号：US13239233
申请日：2011-09-21
CPC分类号： H04L12/462 , H04L49/351 , H04L49/557
摘要： One embodiment disclosed relates to a method of fault recovery by a switch in a local area network. A link failure is detected at a port of the switch. In response to the link failure detection, a medium access control (MAC) address table of the switch is cleared. Clearing the address table causes a discovery process to fill the table to begin immediately. In addition, a link on another port of the switch may be dropped to propagate the link failure.
摘要翻译： 公开的一个实施例涉及通过局域网中的交换机进行故障恢复的方法。 在交换机的端口处检测到链路故障。 响应链路故障检测，交换机的介质访问控制（MAC）地址表被清除。 清除地址表会导致发现过程填写表以立即开始。 另外，交换机的另一个端口上的链路可能被丢弃，以传播链路故障。
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公开(公告)号：US07965623B1
公开(公告)日：2011-06-21
申请号：US12542836
申请日：2009-08-18
CPC分类号： H04L12/462 , H04L49/351 , H04L49/557
摘要： One embodiment disclosed relates to a method of fault recovery by a switch in a local area network. A link failure is detected at a port of the switch. In response to the link failure detection, a MAC address table of the switch is cleared. Clearing the address table causes a discovery process to fill the table to begin immediately. In addition, a link on another port of the switch may be dropped to propagate the link failure.
摘要翻译： 公开的一个实施例涉及通过局域网中的交换机进行故障恢复的方法。 在交换机的端口上检测到链路故障。 响应链路故障检测，交换机的MAC地址表被清除。 清除地址表会导致发现过程填写表以立即开始。 另外，交换机的另一个端口上的链路可能被丢弃，以传播链路故障。
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公开(公告)号：US07983152B1
公开(公告)日：2011-07-19
申请号：US12542841
申请日：2009-08-18
IPC分类号： G01R31/08
CPC分类号： H04L12/56 , H04L49/351 , H04L49/557
摘要： One embodiment relates to a method of providing dual-homing in a Layer 2 switch. A determination is made as to whether a link is available to an upstream network on for a currently active port. If the link is unavailable, then the Layer 2 switch a) performs a switchover such that the currently active port becomes a newly passive port, and a currently passive port becomes a newly active port, b) clears entries in an address table of the Layer 2 switch, and c) spoofs MAC addresses out of the newly active link. Other embodiments are also disclosed.
摘要翻译： 一个实施例涉及在二层交换机中提供双归属的方法。 确定当前活动端口上的上行网络是否可用链路。 如果链路不可用，则二层交换机a）进行切换，使当前活动端口成为新被动端口，当前被动端口成为新活动端口，b）清除层的地址表中的条目 2交换机，以及c）欺骗新活动链路中的MAC地址。 还公开了其他实施例。
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