In order to ensure the reliability of MPLS network, MPLS fast Reroute (FRR) based on traffic engineering with the ability to provide fast protection and switching LSP capacity.

为了保证MPLS网络的可靠性，MPLS快速重路由技术借助MPLS流量工程的能力，为主标签交换路径(lsp)提供快速保护倒换能力。

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The addition is about 20 milliseconds locally, 25 milliseconds half-way across the country and 75 milliseconds to reroute traffic fully across the country.

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The company has operations centers around the country that can monitor and reroute traffic, and its equipment can run on backup batteries and generators for a few days if needed.

WSJ: Telecom Firms Skirt Worst Damage

The flood damage knocked out websites and forced telecoms carriers to reroute international traffic.

BBC: Storm Sandy: Data hubs damage concerns