AC-Influenced Designated Forwarder Election for EVPN
draft-ietf-bess-evpn-ac-df-03
| Document | Type | Replaced Internet-Draft (bess WG) | |
|---|---|---|---|
| Last updated | 2018-03-28 (latest revision 2018-01-18) | ||
| Replaces | draft-rabadan-bess-evpn-ac-df | ||
| Replaced by | draft-ietf-bess-evpn-df-election-framework | ||
| Stream | IETF | ||
| Intended RFC status | Informational | ||
| Formats |
Expired & archived
pdf
htmlized
bibtex
|
||
| Stream | WG state | Dead WG Document | |
| Document shepherd | Stephane Litkowski | ||
| IESG | IESG state | Replaced by draft-ietf-bess-evpn-df-election-framework | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | (None) | ||
| Send notices to | Stephane Litkowski <stephane.litkowski@orange.com> | ||
https://www.ietf.org/archive/id/draft-ietf-bess-evpn-ac-df-03.txt
Abstract
The Designated Forwarder (DF) in EVPN networks is the PE responsible for sending multicast, broadcast and unknown unicast traffic to a multi-homed CE, on a given Ethernet Tag on a particular Ethernet Segment (ES). The DF is selected based on the list of PEs that advertise the Ethernet Segment Identifier (ESI) to the EVPN network. While PE node or link failures trigger the DF re-election for a given <ESI, EVI>, individual Attachment Circuit (AC) or MAC-VRF failures do not trigger such DF re-election and the traffic may therefore be permanently impacted, even though there is an alternative path. This document improves the DF election algorithm so that the AC status can influence the result of the election and this type of "logical" failures can be protected too.
Authors
Jorge Rabadan
(jorge.rabadan@nokia.com)
Kiran Nagaraj
(kiran.nagaraj@nokia.com)
Senthil Sathappan
(senthil.sathappan@nokia.com)
Vinod Prabhu
(vinod.prabhu@nokia.com)
Autumn Liu
(hliu@ciena.com)
Wen Lin
(wlin@juniper.net)
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)