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US 2015/0085647 A1Published application
Eliminating External Buffer for Hitless Protection by Using Channelized Flow Control
AssigneeNEC Laboratories America, Inc.
InventorsJunqiang Hu, Yoshinobu Ooto, Kazuo Takagi, Yoshiaki Aono, Ting Wang
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Abstract
A packet switched communication system to support hitless protection includes a packet processor; a traffic manager with a buffer sized to compensate a maximum skew of each hitless path pair of a working path and a protecting path; and a hitless processor positioned between the packet processor and the traffic manager, wherein an interface between hitless processor and traffic manager has flow control to start or stop (XON/XOFF) traffic.
Claims20
A packet switched communication system, to support hitless protection, comprising
- a packet processor;
- a traffic manager with a buffer sized to compensate a maximum skew of each hitless path pair of a working path and a protecting path;
- a hitless processor positioned between the packet processor and the traffic manager, wherein an interface between hitless processor and traffic manager has flow control to start or stop (XON/XOFF) traffic.
A method for communication, comprising:
- aggregating packets from different ports in aligned mode;
- buffering a traffic manager to compensate a maximum switching skew among different ports for each flow;
- and
- providing as an interface between a hitless processor and a traffic manager with flow control to start or stop (XON/XOFF) traffic, wherein the interface between hitless processor and traffic manager is channelized interface, with per-channel XON/XOFF control and each source flow is mapped to one channel.
1 more element
Dependencies are inferred from the claim text.