This drafts starts by asserting that there are limitations on what can
be done with the existing technology. As the description is quite
vague, I can not be certain. But I do not know of any difficulty in
providing the described capabilities with current technology, without
introducing a new, undescribed, construct called a VTN.
Yours,
Joel
On 3/25/2020 9:44 AM, [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
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