发明名称 |
DUAL-HOMING FOR ETHERNET LINE SERVICES |
摘要 |
Techniques are described which provide mechanisms for dual-homing an access ring for virtual private wire service (VPWS) Ethernet line (E-Line) services. The mechanism may provide resiliency against access ring failures and offer a restoration time of 50 msec upon failure. A method to provide such resiliency may generally include determining, at a first ring port of an access node, a ring failure in an Ethernet ring. Upon determining the first ring port of the access node is not situated on a same side of the Ethernet ring as a node designated as a ring protection link (RPL) owner, a message is transmitted on a second ring port of the access node towards a provider edge (PE) node. The message is used to activate pseudowires (PWs) at the PE node for virtual local area networks (VLANs) of the access node. |
申请公布号 |
EP2633649(A1) |
申请公布日期 |
2013.09.04 |
申请号 |
EP20110785184 |
申请日期 |
2011.10.26 |
申请人 |
CISCO TECHNOLOGY, INC. |
发明人 |
SAJASSI, ALI;SALAM, SAMER M. |
分类号 |
H04L12/437;H04L12/703;H04L12/707;H04L12/721 |
主分类号 |
H04L12/437 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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