Invention Grant
- Patent Title: Dual-homing for ethernet line services
- Patent Title (中): 以太网线路业务的双归属
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Application No.: US12914722Application Date: 2010-10-28
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Publication No.: US08644134B2Publication Date: 2014-02-04
- Inventor: Ali Sajassi , Samer M. Salam
- Applicant: Ali Sajassi , Samer M. Salam
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Patterson & Sheridan LLP
- Main IPC: G01R31/08
- IPC: G01R31/08

Abstract:
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.
Public/Granted literature
- US20120106360A1 DUAL-HOMING FOR ETHERNET LINE SERVICES Public/Granted day:2012-05-03
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