MPLS fast reroute without full mesh traffic engineering

Details MPLS fast reroute without full mesh traffic engineering MPLS fast reroute without full mesh traffic engineering

2007-06-12

2007-06-12

Ferris, Derrick W. (Department: 2616)

Multiplex communications

Fault recovery

C370S409000

Reexamination Certificate

active

10166886

ABSTRACT:
Fast Reroute capability is added to an IP network to guarantee fast recovery to IP traffic in case of link or node failure without the need to deploy a full mesh of MPLS Traffic Engineering Label Switched Paths (LSPs). In one implementation, to protect a link, a 1-hop primary LSP is configured for the protected link and in addition a backup tunnel is configured to protect the 1-hop primary LSP. To protect a node, 2-hop primary LSPs are established for the link pairs traversing the node and backup tunnel(s) are configured to protect these 2-hop primary LSPs.

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