Invention Grant
US08391163B2 Operating MPLS label switched paths and MPLS pseudowire in loopback mode
有权
在环回模式下运行MPLS标签交换路径和MPLS伪线
- Patent Title: Operating MPLS label switched paths and MPLS pseudowire in loopback mode
- Patent Title (中): 在环回模式下运行MPLS标签交换路径和MPLS伪线
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Application No.: US12383366Application Date: 2009-03-23
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Publication No.: US08391163B2Publication Date: 2013-03-05
- Inventor: Sami Boutros , Muthurajah Sivabalan , David D. Ward , George Swallow , Carlos M. Pignataro
- Applicant: Sami Boutros , Muthurajah Sivabalan , David D. Ward , George Swallow , Carlos M. Pignataro
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Cesari and McKenna, LLP
- Main IPC: H04J1/16
- IPC: H04J1/16
Abstract:
In one embodiment, an initiating maintenance end point (MEP) may transmit a lock message to lock a circuit traversing one or more maintenance intermediate points (MIPs) between the initiating MEP and an end MEP. The initiating MEP may then transmit an in-band packet containing a loopback request to a particular MIP along the circuit using a particular time-to-live (TTL) value in the packet to reach the particular MIP. Upon receiving the packet at the particular MIP, and in response to determining that the TTL has expired, the particular MIP inspects the packet to discover the loopback request, and correspondingly operates in a loopback mode.
Public/Granted literature
- US20100238812A1 Operating MPLS label switched paths and MPLS pseudowire in loopback mode Public/Granted day:2010-09-23
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