[ipv6-wg] next version of RIPE-501, v.2
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Ivan Pepelnjak
ip at ioshints.info
Sat Jul 23 09:37:00 CEST 2011
IS-IS MT is highly desirable in most circumstances anyway, but we haven't considered that a good-enough reason to make it MANDATORY. However, if you run MPLS TE without MT, you get black hole routing the moment the first autoroute MPLS TE tunnel is established; thus we've made IS-IS MT MANDATORY for networks running MPLS TE. Details here: http://blog.ioshints.info/2010/03/is-ismpls-tenative-ipv6fail.html However, I'm perfectly happy if the WG decides to make IS-IS MT mandatory in all cases (would make sense anyway). Cheers, Ivan > -----Original Message----- > From: ipv6-wg-admin at ripe.net [mailto:ipv6-wg-admin at ripe.net] On Behalf Of > Jan Zorz @ go6.si > Sent: Saturday, July 23, 2011 12:12 AM > To: ipv6-wg at ripe.net > Subject: Re: [ipv6-wg] next version of RIPE-501, v.2 > > On 7/22/11 3:57 PM, Isacco Fontana wrote: > > Hi, > > relating on following sentence: "If MPLS Traffic Engineering is used in > > combination with IS-IS routing protocol, the equipment MUST support > > "M-ISIS: Multi-Topology (MT) Routing in Intermediate System to > > Intermediate Systems (IS-ISs)" [RFC 5120]" > > > > I think the Multitopology ISIS can be used also without TE ad said in > > RFC 5120 with IPv6: "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. ".... > > thnx for comment. > > What would be suggested change in text? > > Let's see if Ivan "mpls-master" Pepelnjak agree on proposed change :) > > Cheers, Jan
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