Hi Peter, As described in the abstract, the purpose of this draft is to define a simplified control plane mechanism to build SR based Virtual Transport Network (VTN), it is based on the combination of IS-IS Multi-Topology with other IS-IS extensions, e.g. the extensions for TE, SR and L2 bundle. In a word, it tries to reuse the existing TLVs as much as possible.
That said, this document introduces the mechanism of specifying per-topology TE attributes, which was not covered in the existing IS-IS MT (RFC 5120). Similarly, it also introduces the mechanism of associating MT-IDs with a particular member link of L2 bundle, which was not defined in IS-IS L2 Bundle (RFC 8668). Thus we think it is appropriate to be standard track. Best regards, Jie > -----Original Message----- > From: Lsr [mailto:[email protected]] On Behalf Of Peter Psenak > Sent: Wednesday, March 25, 2020 10:09 PM > To: [email protected]; lsr <[email protected]> > Subject: Re: [Lsr] Using IS-IS Multi-Topology (MT) for Segment Routing based > Virtual Transport Network > > Hi Chongfeng, > > what exactly is being standardized in this draft? I don't see anything. > > thanks, > Peter > > > On 25/03/2020 14:44, [email protected] wrote: > > > > Hello, folks, > > > > we have submitted a new draft of > > https://tools.ietf.org/html/draft-xie-lsr-isis-sr-vtn-mt-00 . > > > > It is about Using IS-IS Multi-Topology (MT) for Segment Routing based > > Virtual Transport Network. Enhanced VPN (VPN+) as defined in > > I-D.ietf-teas-enhanced-vpn aims to provide enhanced VPN service to > > support some applications's needs of enhanced isolation and stringent > > performance requirements. VPN+ requries integration between the > > overlay VPN and the underlay network. A Virtual Transport Network > > (VTN) is a virtual network which consists of a subset of the network > > toplogy and network resources allocated from the underlay network. A > > VTN could be used as the underlay for one or a group of VPN+ services. > > This document describes a simplified mechanism to build the SR based > > VTNs using IGP > > multi- topology together with other well-defined IS-IS extensions. > > > > Comments and suggestions are highly appreciated. > > > > Chongfeng Xie > > > > > > _______________________________________________ > Lsr mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/lsr _______________________________________________ Lsr mailing list [email protected] https://www.ietf.org/mailman/listinfo/lsr
