Congratulations for the production of this RFC!

This draft is useful not only for MVPN using mLDP/RSVP-TE/IR(which is covered 
by this RFC), but also for MVPN using BIER (which is covered by BIER-MVPN 

It can be leveraged to Segmented MVPN too, by using a 'loose stitching' between 
mLDP/RSVP-TE/IR/BIER. This is described in 

Jeffrey generalize it and extended to EVPN case, and described in 

Hope they are right to be in BESS WG, and please offer suggestions/comments on 


-----Original Message-----
From: BESS [] On Behalf Of
Sent: Wednesday, February 20, 2019 2:58 PM
Subject: [bess] RFC 8534 on Explicit Tracking with Wildcard Routes in Multicast 

A new Request for Comments is now available in online RFC libraries.

        RFC 8534

        Title:      Explicit Tracking with Wildcard Routes 
                    in Multicast VPN 
        Author:     A. Dolganow, 
                    J. Kotalwar,
                    E. Rosen, Ed.,
                    Z. Zhang
        Status:     Standards Track
        Stream:     IETF
        Date:       February 2019
        Pages:      21
        Characters: 49896
        Updates:    RFC 6514, RFC 6625, RFC 7524, RFC 7582, RFC 7900

        I-D Tag:    draft-ietf-bess-mvpn-expl-track-13.txt


        DOI:        10.17487/RFC8534

The base Multicast VPN (MVPN) specifications (RFCs 6513 and 6514) provide 
procedures to allow a multicast ingress node to invoke "explicit tracking" for 
a multicast flow or set of flows, thus learning the egress nodes for that flow 
or set of flows.  However, the specifications are not completely clear about 
how the explicit tracking procedures work in certain scenarios.  This document 
provides the necessary clarifications.  It also specifies a new, optimized 
explicit-tracking procedure.  This new procedure allows an ingress node, by 
sending a single message, to request explicit tracking of each of a set of 
flows, where the set of flows is specified using a wildcard mechanism.  This 
document updates RFCs 6514, 6625, 7524, 7582, and 7900.

This document is a product of the BGP Enabled Services Working Group of the 

This is now a Proposed Standard.

STANDARDS TRACK: This document specifies an Internet Standards Track protocol 
for the Internet community, and requests discussion and suggestions for 
improvements.  Please refer to the current edition of the Official Internet 
Protocol Standards ( for the 
standardization state and status of this protocol.  Distribution of this memo 
is unlimited.

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