公开(公告)号：US09973415B2

公开(公告)日：2018-05-15

申请号：US14694541

申请日：2015-04-23

Applicant: Coriant Operations, Inc.

Inventor： Weiying Cheng ,  Chris R. Zettinger ,  Thomas T. Rarick

IPC: H04L12/707 ,  H04L12/46 ,  H04L12/713 ,  H04L12/24

CPC classification number: H04L45/22 ,  H04L12/4633 ,  H04L12/4641 ,  H04L41/0681 ,  H04L41/0816 ,  H04L45/586

Abstract: To perform protection switching between tunnels in a network, Y.1731-based APS messages are often sent from a management system to nodes at the tunnels' end-points. If the management system is located near one node (local node) and far away from the other node (remote node), the APS message, which operates at the Ethernet service layer, travels to the remote node slower than traffic over the tunnels. This slower transmission time may prevent the remote node from performing a switch within a desired timeframe. The disclosed embodiments include a 1:1 bidirectional VLAN-based protection arrangement that accomplishes a 50 millisecond switching time without using Y.1731-based APS messages. The embodiments accomplish this by sending a switching command from the management system to the local node and modifying a message already traveling from the local node to the remote node to include a switching message that causes the remote node to perform the switch.

公开(公告)号：US20150256447A1

公开(公告)日：2015-09-10

申请号：US14694541

申请日：2015-04-23

Applicant: Coriant Operations, Inc.

Inventor： Weiying Cheng ,  Chris R. Zettinger ,  Thomas T. Rarick

IPC: H04L12/707 ,  H04L12/713

CPC classification number: H04L45/22 ,  H04L12/4633 ,  H04L12/4641 ,  H04L41/0681 ,  H04L41/0816 ,  H04L45/586

Abstract: To perform protection switching between tunnels in a network, Y.1731-based APS messages are often sent from a management system to nodes at the tunnels' end-points. If the management system is located near one node (local node) and far away from the other node (remote node), the APS message, which operates at the Ethernet service layer, travels to the remote node slower than traffic over the tunnels. This slower transmission time may prevent the remote node from performing a switch within a desired timeframe. The disclosed embodiments include a 1:1 bidirectional VLAN-based protection arrangement that accomplishes a 50 millisecond switching time without using Y.1731-based APS messages. The embodiments accomplish this by sending a switching command from the management system to the local node and modifying a message already traveling from the local node to the remote node to include a switching message that causes the remote node to perform the switch.

Abstract translation: 为了在网络中的隧道之间进行保护切换，基于Y.1731的APS消息通常从管理系统发送到隧道端点的节点。 如果管理系统位于一个节点（本地节点）附近并远离另一个节点（远程节点），则在以太网服务层运行的APS消息传播到远程节点比隧道上的流量慢。 这种较慢的传输时间可能会阻止远程节点在期望的时间范围内执行切换。 所公开的实施例包括在不使用基于Y.1731的APS消息的情况下实现50毫秒切换时间的基于VLAN的基于VLAN的保护布置。 这些实施例通过从管理系统向本地节点发送切换命令并修改已经从本地节点传播到远程节点的消息来包括使远程节点执行切换的切换消息来实现。