A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the BGP Enabled ServiceS WG of the IETF.
Title : Preference-based EVPN DF Election
Authors : J. Rabadan
S. Sathappan
W. Lin
J. Drake
A. Sajassi
Filename : draft-ietf-bess-evpn-pref-df-10.txt
Pages : 19
Date : 2022-09-02
Abstract:
The Designated Forwarder (DF) in Ethernet Virtual Private Networks
(EVPN) is defined as the PE responsible for sending Broadcast,
Unknown unicast and Broadcast traffic (BUM) to a multi-homed device/
network in the case of an all-active multi-homing Ethernet Segment
(ES), or BUM and unicast in the case of single-active multi-homing.
The Designated Forwarder is selected out of a candidate list of PEs
that advertise the same Ethernet Segment Identifier (ESI) to the EVPN
network, according to the Default Designated Forwarder Election
algorithm. While the Default Algorithm provides an efficient and
automated way of selecting the Designated Forwarder across different
Ethernet Tags in the Ethernet Segment, there are some use cases where
a more 'deterministic' and user-controlled method is required. At
the same time, Service Providers require an easy way to force an on-
demand Designated Forwarder switchover in order to carry out some
maintenance tasks on the existing Designated Forwarder or control
whether a new active PE can preempt the existing Designated Forwarder
PE.
This document proposes a Designated Forwarder Election algorithm that
meets the requirements of determinism and operation control.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-bess-evpn-pref-df/
There is also an htmlized version available at:
https://datatracker.ietf.org/doc/html/draft-ietf-bess-evpn-pref-df-10
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-bess-evpn-pref-df-10
Internet-Drafts are also available by rsync at rsync.ietf.org::internet-drafts
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