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    • 6. 发明授权
    • Method and apparatus for ensuring survivability of inter-ring traffic
    • 确保环网间业务的生存能力的方法和装置
    • US06658013B1
    • 2003-12-02
    • US09273772
    • 1999-03-23
    • Evert de BoerDavid SteelePeter PhelpsLouis-Rene PareRobert Caporuscio
    • Evert de BoerDavid SteelePeter PhelpsLouis-Rene PareRobert Caporuscio
    • H04J116
    • H04W24/04H04J3/085H04J2203/0042H04J2203/006H04L12/437H04W88/16
    • A method and corresponding network element configuration for delivering communications services between first and second survivable rings, each comprising a respective plurality of network elements, at least two of which are common to both rings. For each particular service, one of the common network elements is designated as a primary gateway node and another as a secondary gateway node. A primary inter-ring connection is established for the particular service by a switch at the primary gateway node, but no inter-ring connection is established at the secondary gateway node. The secondary gateway node comprises a controller for monitoring the status of the primary gateway node and establishing a new inter-ring connection for delivery of said service upon detecting a failure of the primary gateway node. This provides survivable inter-ring traffic which is bandwidth-efficient and with a low switching delay.
    • 一种用于在第一和第二可生存环之间递送通信服务的方法和相应的网络元件配置,每个包括相应的多个网络元件,其中至少两个网络元件是两个环共同的。 对于每个特定服务,公共网络元素之一被指定为主网关节点,另一个被指定为次网关节点。 由主网关节点上的交换机为特定业务建立主环形连接,但在次网关节点处不建立环网间连接。 辅助网关节点包括用于监视主网关节点的状态的控制器,并且在检测到主网关节点的故障时,建立用于传送所述服务的新的环际间连接。 这提供了可行的环际间流量,其具有带宽效率并且具有低切换延迟。
    • 7. 发明申请
    • Method and apparatus for protection switch messaging on a shared mesh network
    • 用于共享网状网络上的保护交换机消息传递的方法和装置
    • US20050088963A1
    • 2005-04-28
    • US10691522
    • 2003-10-24
    • Peter PhelpsBrett CaldwellMark Allaye-ChanGary McKennaSu Zhao
    • Peter PhelpsBrett CaldwellMark Allaye-ChanGary McKennaSu Zhao
    • H04J3/14H04L1/00H04L12/24H04L12/26
    • H04J3/14H04L41/0663H04L43/0817H04L43/0882
    • A method for processing automatic protection switch (APS) messages at a network element in a tunnel provisioned across a data transport network in order to provide for distributed processing of protection switch request messages involves receiving new APS message at the NE; determining whether the NE is an end point of the tunnel, or a tandem of the tunnel and processing the message accordingly. If the NE is a tandem, message processing involves using local information about tunnel segments of the tunnel only maintained by the NE, to update the local information, and to selectively forward the updated information to adjacent NEs of the tunnel. If the NE is an end point, it updates a status of the tunnel. In a preferred embodiment all NEs are responsible for controlling pending and preemption indicators, and for initiating tunnel condition messages, and the end point NEs are responsible for initiating all other messages.
    • 在通过数据传输网络提供的隧道中的网络元件处理自动保护交换机(APS)消息以提供保护交换机请求消息的分布式处理的方法涉及在NE处接收新的APS消息; 确定所述网元是所述隧道的终点还是所述隧道的串联,并相应地处理所述消息。 如果NE是串联的,则消息处理涉及使用仅由网元维护的隧道的隧道段的本地信息,更新本地信息,并选择性地将更新的信息转发到隧道的相邻NE。 如果NE是终点,则更新隧道的状态。 在优选实施例中,所有NE负责控制挂起和抢占指示符,并且用于发起隧道条件消息,并且终点NE负责发起所有其他消息。
    • 8. 发明申请
    • Method and apparatus for providing grades of service for unprotected traffic in an optical network
    • 在光网络中为无保护的业务提供服务等级的方法和装置
    • US20050058064A1
    • 2005-03-17
    • US10662400
    • 2003-09-16
    • Peter PhelpsBrett Caldwell
    • Peter PhelpsBrett Caldwell
    • H04L12/24H04L12/26
    • H04L41/5022H04J3/085H04J2203/006H04L41/0893H04L41/5077
    • A method for providing grades of service to unprotected traffic on an optical network that provides protection channels associated with working channels, defines a linearly ordered set of protection switch request priorities, and two or more grade of service priorities, and uses those priorities to enforce a protection access policy. The unprotected traffic may be of a high priority, approximating non-pre-emptable unprotected traffic (NUT); of low priority, like extra traffic; or may be of an intermediate priority between the two. This allows data transport providers to offer different unprotected transport services at different rates on protected links, in which the different unprotected transport services are associated with different probabilities of pre-emption.
    • 一种为光网络上的不受保护的流量提供服务等级的方法,其提供与工作信道相关联的保护信道,定义了线性有序的保护交换机请求优先级集合,以及两个或更多等级的服务优先级,并且使用这些优先级来执行 保护访问策略。 不受保护的流量可以是高优先级,近似非预先不可保护的流量(NUT); 低优先级,如额外的流量; 或者可以是两者之间的中间优先级。 这允许数据传输提供商在受保护链路上以不同的速率提供不同的不受保护的传输服务,其中不同的不受保护的传输服务与不同的抢占概率相关联。
    • 10. 发明授权
    • Method and apparatus for providing grades of service for unprotected traffic in an optical network
    • 在光网络中为无保护的业务提供服务等级的方法和装置
    • US07535831B2
    • 2009-05-19
    • US10662400
    • 2003-09-16
    • Peter PhelpsBrett Caldwell
    • Peter PhelpsBrett Caldwell
    • H04L1/00H04L12/26
    • H04L41/5022H04J3/085H04J2203/006H04L41/0893H04L41/5077
    • A method for providing grades of service to unprotected traffic on an optical network that provides protection channels associated with working channels, defines a linearly ordered set of protection switch request priorities, and two or more grade of service priorities, and uses those priorities to enforce a protection access policy. The unprotected traffic may be of a high priority, approximating non-pre-emptable unprotected traffic (NUT); of low priority, like extra traffic; or may be of an intermediate priority between the two. This allows data transport providers to offer different unprotected transport services at different rates on protected links, in which the different unprotected transport services are associated with different probabilities of pre-emption.
    • 一种为光网络上的不受保护的流量提供服务等级的方法,其提供与工作信道相关联的保护信道,定义了线性有序的保护交换机请求优先级集合,以及两个或更多个服务等级的优先级,并且使用这些优先级来执行 保护访问策略。 不受保护的流量可以是高优先级,近似非预先不可保护的流量(NUT); 低优先级,如额外的流量; 或者可以是两者之间的中间优先级。 这允许数据传输提供商在受保护链路上以不同的速率提供不同的不受保护的传输服务,其中不同的不受保护的传输服务与不同的抢占概率相关联。