Framework for Ethernet VPN Designated Forwarder Election Extensibility, April 2019
- File formats:
- PROPOSED STANDARD
- RFC 7432
- J. Rabadan, Ed.
S. Mohanty, Ed.
- bess (rtg)
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An alternative to the default Designated Forwarder (DF) selection algorithm in Ethernet VPNs (EVPNs) is defined. The DF is the Provider Edge (PE) router responsible for sending Broadcast, Unknown Unicast, and Multicast (BUM) traffic to a multihomed Customer Edge (CE) device on a given VLAN on a particular Ethernet Segment (ES). In addition, the ability to influence the DF election result for a VLAN based on the state of the associated Attachment Circuit (AC) is specified. This document clarifies the DF election Finite State Machine in EVPN services. Therefore, it updates the EVPN specification (RFC 7432).
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 8729.