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1. 发明授权

US06205488B1 Internet protocol virtual private network realization using multi-protocol label switching tunnels 有权
标题翻译：互联网协议虚拟专网实现使用多协议标签交换隧道
公开(公告)号：US06205488B1
公开(公告)日：2001-03-20
申请号：US09191845
申请日：1998-11-13
申请人： Liam M. Casey , Ian M. Cunningham , Robert W. Eros
发明人： Liam M. Casey , Ian M. Cunningham , Robert W. Eros
IPC分类号： G06F15173
CPC分类号： H04L12/4641
摘要： A virtual private network enables private communications between two or more private networks over a shared MPLS network. The virtual private network disclosed, includes multiple routers connected to the shared MPLS network and configured to dynamically distribute VPN information across the shared MPLS network. The VPN information distributed by a router includes a VPN identifier assigned to that router, which identifies a VPN with which that router is associated. The router includes a first table which stores a map of the label switched paths from the router in question to all other routers connected to the shared MPLS network. The router also includes a second table which stores a map of label switched paths from the router in question to all other routers connected to the shared MPLS network which share a common VPN identifier.
摘要翻译：虚拟专用网络通过共享MPLS网络实现两个或多个私有网络之间的私有通信。所公开的虚拟专用网络包括连接到共享MPLS网络的多个路由器，并配置为跨共享MPLS网络动态分配VPN信息。由路由器分发的VPN信息包括分配给该路由器的VPN标识符，其标识与该路由器相关联的VPN。路由器包括第一表，其存储从所讨论的路由器到连接到共享MPLS网络的所有其他路由器的标签交换路径的映射。路由器还包括第二表，其存储从所讨论的路由器到连接到共享MPLS网络的所有其他路由器的标签交换路径的图，所述其他路由器共享公共VPN标识符。

2. 发明授权

US4940788A Process for preparing azetidinones 失效
标题翻译：制备氮杂环丁酮的方法
公开(公告)号：US4940788A
公开(公告)日：1990-07-10
申请号：US145818
申请日：1988-01-19
申请人： Ian M. Cunningham , David W. Heaton
发明人： Ian M. Cunningham , David W. Heaton
IPC分类号： C07D205/08 , C07D303/48 , C07D477/00 , C07D477/04 , C07D499/06 , C07D499/88 , C07D499/893 , C07D499/897
CPC分类号： C07D303/48 , C07D205/08 , C07D477/04 , C07D499/88 , Y02P20/55
摘要： A process for preparing azetidinones of the formula: ##STR1## wherein R.sup.1 is an amino-protecting group and R.sup.2 is alkyl or aryl, which comprises reacting compounds of the formulae (VIII) and (IX) ##STR2## wherein L is a leaving group. The product azetidinones are intermediates in the preparation of penem and carbapenem antibiotics.

3. 发明授权

US07599620B2 Communications network for a metropolitan area 失效
公开(公告)号：US07599620B2
公开(公告)日：2009-10-06
申请号：US09893493
申请日：2001-06-29
申请人： Alan F. Graves , Ian M. Cunningham , Ryan Stark , Kent E. Felske , Chris Hobbs , John H. Watkins
发明人： Alan F. Graves , Ian M. Cunningham , Ryan Stark , Kent E. Felske , Chris Hobbs , John H. Watkins
IPC分类号： H04B10/00
CPC分类号： H04Q11/0066 , H04Q2011/0075 , H04Q2011/0084
摘要： A communications network for a metropolitan area is disclosed. The network is comprised of three basic types of nodes: an access multiplexer, a photonic switch, and a core node. The access multiplexer provides multiplexing of data packets from end-users onto at least one sparse wavelength division multiplexed (SWDM) wavelength. The SWDM wavelengths are carried over fiber cable to the photonic switches, which consolidate these wavelengths into dense wavelength division multiplexed (DWDM) wavelengths for transmission to the core node. The core nodes include a photonic switch (PSX) and a service-aware terabit router core for routing packets within the metropolitan area via the network or out to a long haul network. The photonic switches and core nodes are capable of switching at the wavelength, group of wavelength, and fiber levels.

4. 发明授权

US06941380B2 Bandwidth allocation in ethernet networks 失效
标题翻译：以太网网络中的带宽分配
公开(公告)号：US06941380B2
公开(公告)日：2005-09-06
申请号：US09749758
申请日：2000-12-28
申请人： Ian M. Cunningham
发明人： Ian M. Cunningham
IPC分类号： H04L12/46 , H04L12/56 , H04L29/06 , G06F15/16 , H04J3/16
CPC分类号： H04L12/462 , H04L47/18 , H04L47/2433 , H04L47/70 , H04L47/724 , H04L47/781 , H04L47/805 , H04L47/822 , H04L47/829 , H04L49/201 , H04L49/351 , H04L69/22
摘要： For assigning bandwidth in a constrained topology ethernet network there is presented a function that creates and manages a ledger of bandwidth requests over the ethernet network. The function, a bandwidth manager, tracks the total bandwidth of each link in the network and the bandwidth that has been reserved on each link. When traffic is granted reserved bandwidth the bandwidth manager notes this allocation in the ledger. The header of the traffic packets indicates that the traffic is of highest priority when the traffic has been given reserved bandwidth. In this manner the bandwidth manager can track and limit the amount of high priority traffic on the network.
摘要翻译：为了在受限拓扑以太网网络中分配带宽，提出了一种通过以太网网络创建和管理带宽请求的分类帐的功能。该功能，带宽管理器，跟踪网络中每个链路的总带宽和每个链路上已保留的带宽。当流量被授予保留带宽时，带宽管理器在分类帐中注释该分配。流量报头表示当业务被给予保留带宽时流量具有最高优先级。以这种方式，带宽管理器可以跟踪和限制网络上的高优先级流量的量。

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