Internet-Draft draft-ietf-bess-mvpn-evpn-aggregation-label-14.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-14.txt
Pages: 17
Dates: 2023-10-04
Abstract:
The MVPN specifications allow a single Point-to-Multipoint (P2MP)
tunnel to carry traffic of multiple IP VPNs (abbreviated as 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-14
A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-bess-mvpn-evpn-aggregation-label-14
Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts
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