公开(公告)号：US20020141429A1

公开(公告)日：2002-10-03

申请号：US10025496

申请日：2001-12-26

Applicant: Nortel Networks Limited

Inventor： Scott S. Pegrum ,  Matthew M. Yuen ,  Nabila Ould-Brahim

IPC: H04L012/56

CPC classification number: H04L45/00 ,  H04L12/4625 ,  H04L45/502 ,  H04L45/58 ,  H04L49/201 ,  H04L49/602

Abstract: A high availability packet forwarding router for an internet protocol (IP) network, includes two control processors, one or more service termination cards (STCs) with forwarding information bases (FIBs), and a packet forwarding engine. The two processors run asynchronously in a master/standby relationship. Integrity of processes running on the control processors is monitored and the forwarding engine forwards packets according to a FIB maintained by an in-service one of the control processors. Hitless failover and hitless software upgrades are supported.

Abstract translation: 用于因特网协议（IP）网络的高可用性分组转发路由器包括两个控制处理器，一个或多个具有转发信息库（FIB）的服务终端卡（STC）和分组转发引擎。 两个处理器在主/备用关系中异步运行。 监视在控制处理器上运行的进程的完整性，并且转发引擎根据由服务中的一个控制处理器维护的FIB来转发分组。 支持无故障故障切换和无提示软件升级。

公开(公告)号：US20030198182A1

公开(公告)日：2003-10-23

申请号：US10449112

申请日：2003-06-02

Applicant: NORTEL NETWORKS LIMITED

Inventor： Scott S. Pegrum ,  Matthew M. Yuen ,  Nabila Ould-Brahim ,  Gregory A. Wilbur

IPC: H04L012/26

CPC classification number: H04L45/00 ,  H04L12/4625 ,  H04L45/502 ,  H04L45/58 ,  H04L49/201 ,  H04L49/602

Abstract: Failover protection is provided on the same facilities for a network connection passing through a high-availability router having shared resources managed by two control processors that respectively maintain a forwarding information bases (FIB). The two processors run asynchronously in a master/standby relationship. Integrity of processes running on the control processors is monitored and a forwarding engine forwards packets according to a FIB maintained by an in-service one of the control processors. If one of the control processors fails, the other control processor uses the same bandwidth on the same facility to continue forwarding packets for a network connection. Identifiers in each packet associated with the network connection are used to indicate the reserved bandwidth associated with the network connection.

Abstract translation: 在相同的设施上提供故障转移保护，用于通过具有由分别保持转发信息库（FIB）的两个控制处理器管理的共享资源的高可用性路由器的网络连接。 两个处理器在主/备用关系中异步运行。 监视在控制处理器上运行的进程的完整性，并且转发引擎根据由服务中的一个控制处理器维护的FIB来转发分组。 如果其中一个控制处理器出现故障，则另一个控制处理器在同一设备上使用相同的带宽来继续转发用于网络连接的数据包。 与网络连接相关联的每个分组中的标识符用于指示与网络连接相关联的预留带宽。