发明申请
US20090073988A1 SYSTEMS AND METHODS FOR A SELF-HEALING CARRIER ETHERNET TOPOLOGY
有权
自我承载载体以太网拓扑学的系统和方法
- 专利标题: SYSTEMS AND METHODS FOR A SELF-HEALING CARRIER ETHERNET TOPOLOGY
- 专利标题(中): 自我承载载体以太网拓扑学的系统和方法
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申请号: US11855596申请日: 2007-09-14
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公开(公告)号: US20090073988A1公开(公告)日: 2009-03-19
- 发明人: Morteza Ghodrat , Michael Gazier , Ian Duncan
- 申请人: Morteza Ghodrat , Michael Gazier , Ian Duncan
- 主分类号: H04L12/56
- IPC分类号: H04L12/56
摘要:
Systems and methods for self-healing Ethernet topologies which are compatible with PBT, which use standards-based protocols, which do not self-configure, and which use Ethernet OAM are provided. Interconnected nodes are configured with a primary and secondary path which is determined by VLANs, MPLS label, Provider Backbone Bridge Traffic Engineering (PBB-TE) VLAN ID (VID), Frame Relay (FR), Asynchronous Transfer Mode (ATM) Virtual Circuits (VCs), and the like. One or more head-end nodes are designated for terminating each path and for performing cross-connects between the primary and secondary paths. IEEE 802.1ag Continuity Check Messages (CCM) are transmitted by all nodes on both the primary and secondary routes. Responsive to a loss of a predetermined number of CCM messages, traffic is switched to the secondary route. In non-fault conditions, both the paths for the primary and secondary routes can carry traffic.
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