@misc{rfc5120, series = {Request for Comments}, number = 5120, howpublished = {RFC 5120}, publisher = {RFC Editor}, doi = {10.17487/RFC5120}, url = {https://www.rfc-editor.org/info/rfc5120}, author = {Naiming Shen and Nischal Sheth and Tony Przygienda}, title = {{M-ISIS: Multi Topology (MT) Routing in Intermediate System to Intermediate Systems (IS-ISs)}}, pagetotal = 14, year = 2008, month = feb, abstract = {This document describes an optional mechanism within Intermediate System to Intermediate Systems (IS-ISs) used today by many ISPs for IGP routing within their clouds. This document describes how to run, within a single IS-IS domain, a set of independent IP topologies that we call Multi-Topologies (MTs). This MT extension can be used for a variety of purposes, such as an in-band management network "on top" of the original IGP topology, maintaining separate IGP routing domains for isolated multicast or IPv6 islands within the backbone, or forcing a subset of an address space to follow a different topology. {[}STANDARDS-TRACK{]}}, }