发明授权
- 专利标题: Q-in-Q Ethernet rings
- 专利标题(中): Q-in-Q以太网振铃
-
申请号: US14251999申请日: 2014-04-14
-
公开(公告)号: US09319268B2公开(公告)日: 2016-04-19
- 发明人: David Allan , Nigel Bragg , Marc Holness
- 申请人: RPX Clearinghouse LLC
- 申请人地址: US CA San Francisco
- 专利权人: RPX Clearinghouse LLC
- 当前专利权人: RPX Clearinghouse LLC
- 当前专利权人地址: US CA San Francisco
- 代理机构: Christopher & Weisberg, P.A.
- 主分类号: H04L12/437
- IPC分类号: H04L12/437 ; H04L12/24 ; H04L12/46 ; H04L12/42
摘要:
A resilient virtual Ethernet ring has nodes interconnected by working and protection paths. Each node has a set of VLAN IDs (VIDs) for tagging traffic entering the ring by identifying the ingress node and whether the traffic is on the working or protection path. MAC addresses are learned in one direction around the ring. A port aliasing module records in a forwarding table a port direction opposite to a learned port direction. Each node can also cross-connect working and protection paths. If a span fails, the two nodes immediately on either side of the failure are cross-connected to fold the ring. Working-path traffic is cross-connected onto the protection path at the first of the two nodes and is then cross-connected back onto the working path at the second of the two nodes so that traffic always ingresses and egresses the ring from the working path.
公开/授权文献
- US20140226463A1 Q-IN-Q ETHERNET RINGS 公开/授权日:2014-08-14
信息查询