Internet-Draft draft-ietf-bess-mvpn-evpn-aggregation-label-12.txt is now
available. It is a work item of the BGP Enabled ServiceS (BESS) WG of the
IETF.
Title: MVPN/EVPN Tunnel Aggregation with Common Labels
Authors: Zhaohui Zhang
Eric Rosen
Wen Lin
Zhenbin Li
IJsbrand Wijnands
Name: draft-ietf-bess-mvpn-evpn-aggregation-label-12.txt
Pages: 16
Dates: 2023-09-29
Abstract:
The MVPN specifications allow a single Point-to-Multipoint (P2MP)
tunnel to carry traffic of multiple VPNs. The EVPN specifications
allow a single P2MP tunnel to carry traffic of multiple Broadcast
Domains (BDs). These features require the ingress router of the P2MP
tunnel to allocate an upstream-assigned MPLS label for each VPN or
for each BD. A packet sent on a P2MP tunnel then carries the label
that is mapped to its VPN or BD (in some cases, a distinct upstream-
assigned label is needed for each flow.) Since each ingress router
allocates labels independently, with no coordination among the
ingress routers, the egress routers may need to keep track of a large
number of labels. The number of labels may need to be as large (or
larger) than the product of the number of ingress routers times the
number of VPNs or BDs. However, the number of labels can be greatly
reduced if the association between a label and a VPN or BD is made by
provisioning, so that all ingress routers assign the same label to a
particular VPN or BD. New procedures are needed in order to take
advantage of such provisioned labels. These new procedures also
apply to Multipoint-to-Multipoint (MP2MP) tunnels. This document
updates RFCs 6514, 7432 and 7582 by specifying the necessary
procedures.
The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-bess-mvpn-evpn-aggregation-label/
There is also an HTMLized version available at:
https://datatracker.ietf.org/doc/html/draft-ietf-bess-mvpn-evpn-aggregation-label-12
A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-bess-mvpn-evpn-aggregation-label-12
Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts
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