Enhanced Topology Independent Loop-free Alternate Fast Re-route

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Last updated 2019-09-12 (latest revision 2019-03-11)
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Topology Independent Loop-free Alternate Fast Re-route (TI-LFA) aims at providing protection of node and adjacency segments within the Segment Routing (SR) framework. A key aspect of TI-LFA is the FRR path selection approach establishing protection over the expected post-convergence paths from the point of local repair. However, the TI-LFA FRR path may skip the node even if it is specified in the SID list to be traveled. This document defines Enhanced TI-LFA(TI-LFA+) by adding a No-bypass indicator for segments to ensure that the FRR route will not bypass the specific node, such as firewall.


Cheng Li (chengli13@huawei.com)
Zhibo Hu (huzhibo@huawei.com)

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