@techreport{chen-isis-black-hole-avoid-03, number = {draft-chen-isis-black-hole-avoid-03}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-chen-isis-black-hole-avoid/03/}, author = {Zhe Chen and Xiaohu Xu and Dean Cheng}, title = {{Avoiding Traffic Black-Holes for Route Aggregation in IS-IS}}, pagetotal = 6, year = 2018, month = sep, day = 6, abstract = {When the Intermediate System to Intermediate System (IS-IS) routing protocol is adopted by a highly symmetric network such as the Leaf- Spine or Fat-Tree network, the Leaf nodes (e.g., Top of Rack switches in datacenters) are recommended to be prevented from receiving other nodes' explicit routes in order to achieve scalability. However, such a setup would cause traffic black-holes or suboptimal routing if link failure happens in the network. This document introduces INFINITE cost to IS-IS LSPs to solve this problem.}, }