公开(公告)号：US09722916B2

公开(公告)日：2017-08-01

申请号：US14041392

申请日：2013-09-30

Applicant: Cisco Technology, Inc.

Inventor： Muthurajah Sivabalan ,  Sami Boutros ,  George Swallow ,  Simon Spraggs

IPC: H04L12/707 ,  H04L12/703 ,  H04L12/42 ,  H04L12/911 ,  H04L12/723 ,  H04L12/54 ,  H04L12/437 ,  H04L12/721

CPC classification number: H04L45/22 ,  H04L12/42 ,  H04L12/437 ,  H04L45/28 ,  H04L45/50 ,  H04L45/68 ,  H04L47/70 ,  H04L47/746 ,  H04L47/825

Abstract: In one embodiment, a source transmits one or more data packets to a destination over a primary pseudowire (PW). When a device on the primary PW detects a downstream failure of the primary PW, and in response to receiving one or more data packets from a source from the failed primary PW, the device adds a loopback packet identifier to the one or more received data packets, and returns the one or more data packets with the loopback packet identifier to the source upstream on the primary PW. Accordingly, in response to receiving the data packet returned with a loopback packet identifier from the primary PW (in response to the downstream failure), the source retransmits the one or more data packets to the destination over a backup PW.

公开(公告)号：US20150092539A1

公开(公告)日：2015-04-02

申请号：US14041392

申请日：2013-09-30

Applicant: Cisco Technology, Inc.

Inventor： Muthurajah Sivabalan ,  Sami Boutros ,  George Swallow ,  Simon Spraggs

IPC: H04L12/24 ,  H04L12/707 ,  H04L12/703

CPC classification number: H04L45/22 ,  H04L12/42 ,  H04L12/437 ,  H04L45/28 ,  H04L45/50 ,  H04L45/68 ,  H04L47/70 ,  H04L47/746 ,  H04L47/825

Abstract: In one embodiment, a source transmits one or more data packets to a destination over a primary pseudowire (PW). When a device on the primary PW detects a downstream failure of the primary PW, and in response to receiving one or more data packets from a source from the failed primary PW, the device adds a loopback packet identifier to the one or more received data packets, and returns the one or more data packets with the loopback packet identifier to the source upstream on the primary PW. Accordingly, in response to receiving the data packet returned with a loopback packet identifier from the primary PW (in response to the downstream failure), the source retransmits the one or more data packets to the destination over a backup PW.

Abstract translation: 在一个实施例中，源将主要伪线（PW）发送一个或多个数据分组到目的地。 当主PW上的设备检测到主PW的下游故障时，并且响应于从故障主PW接收到来自源的一个或多个数据分组，该设备向一个或多个接收的数据分组添加环回分组标识符 并将具有环回分组标识符的一个或多个数据分组返回到主PW上游源。 因此，响应于从主PW（响应于下游故障）接收到以环回分组标识符返回的数据分组，源通过备份PW将一个或多个数据分组重传到目的地。