Loop-Free Alternates for IP/LDP Local Protection

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Last updated 2004-06-28
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document defines an architecture and selection process for providing local protection for IP unicast and/or LDP traffic in the event of a single link or node failure until the router has converged. When computing the primary next-hop for a prefix, a router S also determines an alternate next-hop which can be used if the primary next-hop fails. The alternate next-hop is said to be a loop-free alternate, which goes to a neighbor whose shortest path to the prefix does not go back through the router S.


Alia Atlas (akatlas@google.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)