@techreport{xu-lsr-isis-flooding-reduction-in-msdc-05, number = {draft-xu-lsr-isis-flooding-reduction-in-msdc-05}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-xu-lsr-isis-flooding-reduction-in-msdc/05/}, author = {Xiaohu Xu and Luyuan Fang and Jeff Tantsura and Shaowen Ma}, title = {{IS-IS Flooding Reduction in MSDC}}, pagetotal = 7, year = 2024, month = jan, day = 30, abstract = {IS-IS is a commonly used routing protocol in MSDC (Massively Scalable Data Center) networks where CLOS is the most popular topology. In a CLOS topology, each IS-IS router would receive multiple copies of the same LSP (Link State Packet) from multiple IS-IS neighbors. Moreover, two IS-IS neighbors may send each other the same LSP simultaneously. The unnecessary link-state information flooding results in a large waste of resources for IS-IS routers, as there are too many neighbors for each router. To address this scaling problem, this document introduces some extensions to the IS-IS protocol. These extensions aim to significantly reduce the IS-IS flooding within MSDC networks, which can greatly improve the scalability of such networks.}, }