Internet-Draft draft-ietf-bess-evpn-pref-df-12.txt is now available. It is a
work item of the BGP Enabled ServiceS (BESS) WG of the IETF.
Title: Preference-based EVPN DF Election
Authors: J. Rabadan
S. Sathappan
W. Lin
J. Drake
A. Sajassi
Name: draft-ietf-bess-evpn-pref-df-12.txt
Pages: 20
Dates: 2023-10-06
Abstract:
The Designated Forwarder (DF) in Ethernet Virtual Private Networks
(EVPN) is defined as the Provider Edge (PE) router responsible for
sending Broadcast, Unknown unicast and Multicast 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, Network Operators
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 Internet-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-12
A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-bess-evpn-pref-df-12
Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts
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