| rfc9785v2.txt | rfc9785.txt | |||
|---|---|---|---|---|
| Internet Engineering Task Force (IETF) J. Rabadan, Ed. | Internet Engineering Task Force (IETF) J. Rabadan, Ed. | |||
| Request for Comments: 9785 S. Sathappan | Request for Comments: 9785 S. Sathappan | |||
| Updates: 8584 Nokia | Updates: 8584 Nokia | |||
| Category: Standards Track W. Lin | Category: Standards Track W. Lin | |||
| ISSN: 2070-1721 Juniper Networks | ISSN: 2070-1721 Juniper Networks | |||
| J. Drake | J. Drake | |||
| Independent | Independent | |||
| A. Sajassi | A. Sajassi | |||
| Cisco Systems | Cisco Systems | |||
| May 2025 | June 2025 | |||
| Preference-Based EVPN Designated Forwarder (DF) Election | Preference-Based EVPN Designated Forwarder (DF) Election | |||
| Abstract | Abstract | |||
| The Designated Forwarder (DF) in Ethernet Virtual Private Networks | The Designated Forwarder (DF) in Ethernet Virtual Private Networks | |||
| (EVPNs) is defined as the Provider Edge (PE) router responsible for | (EVPNs) is defined as the Provider Edge (PE) router responsible for | |||
| sending Broadcast, Unknown Unicast, and Multicast (BUM) traffic to a | sending Broadcast, Unknown Unicast, and Multicast (BUM) traffic to a | |||
| multihomed device/network in the case of an All-Active multihoming | multihomed device/network in the case of an All-Active multihoming | |||
| Ethernet Segment (ES) or BUM and unicast in the case of Single-Active | Ethernet Segment (ES) or BUM and unicast in the case of Single-Active | |||
| skipping to change at line 356 ¶ | skipping to change at line 356 ¶ | |||
| a. vES1 and vES2 are now configurable with three optional parameters | a. vES1 and vES2 are now configurable with three optional parameters | |||
| that are signaled in the DF Election Extended Community. These | that are signaled in the DF Election Extended Community. These | |||
| parameters are the Preference, Preemption (or "Don't Preempt" | parameters are the Preference, Preemption (or "Don't Preempt" | |||
| Capability) option, and DF algorithm. We will represent these | Capability) option, and DF algorithm. We will represent these | |||
| parameters as (Pref, DP, Alg). For instance, vES1 (Pref, DP, | parameters as (Pref, DP, Alg). For instance, vES1 (Pref, DP, | |||
| Alg) is configured as: | Alg) is configured as: | |||
| (500, 0, Highest-Preference) in PE1, | (500, 0, Highest-Preference) in PE1, | |||
| (255, 0, Highest-Preference) in PE2. | (255, 0, Highest-Preference) in PE2. | |||
| vES2 is configured as | vES2 is configured as: | |||
| (100, 0, Highest-Preference) in PE1, | (100, 0, Highest-Preference) in PE1, | |||
| (200, 0, Highest-Preference) in PE2, and | (200, 0, Highest-Preference) in PE2, and | |||
| (300, 0, Highest-Preference) in PE3. | (300, 0, Highest-Preference) in PE3. | |||
| b. The PEs advertise an Ethernet Segment route for each virtual | b. The PEs advertise an Ethernet Segment route for each virtual | |||
| Ethernet Segment, including the three parameters indicated in (a) | Ethernet Segment, including the three parameters indicated in (a) | |||
| above, in the DF Election Extended Community (encoded as | above, in the DF Election Extended Community (encoded as | |||
| described in Section 3). | described in Section 3). | |||
| skipping to change at line 842 ¶ | skipping to change at line 842 ¶ | |||
| 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, | 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, | |||
| May 2017, <https://www.rfc-editor.org/info/rfc8174>. | May 2017, <https://www.rfc-editor.org/info/rfc8174>. | |||
| [RFC8584] Rabadan, J., Ed., Mohanty, S., Ed., Sajassi, A., Drake, | [RFC8584] Rabadan, J., Ed., Mohanty, S., Ed., Sajassi, A., Drake, | |||
| J., Nagaraj, K., and S. Sathappan, "Framework for Ethernet | J., Nagaraj, K., and S. Sathappan, "Framework for Ethernet | |||
| VPN Designated Forwarder Election Extensibility", | VPN Designated Forwarder Election Extensibility", | |||
| RFC 8584, DOI 10.17487/RFC8584, April 2019, | RFC 8584, DOI 10.17487/RFC8584, April 2019, | |||
| <https://www.rfc-editor.org/info/rfc8584>. | <https://www.rfc-editor.org/info/rfc8584>. | |||
| [RFC9784] Sajassi, A., Brissette, P., Schell, R., Drake, J., and J. | [RFC9784] Sajassi, A., Brissette, P., Schell, R., Drake, J., and J. | |||
| Rabadan, "EVPN Virtual Ethernet Segment", RFC 9784, | Rabadan, "Virtual Ethernet Segments for EVPN and Provider | |||
| DOI 10.17487/9784, May 2025, | Backbone Bridge EVPN", RFC 9784, DOI 10.17487/9784, June | |||
| <https://www.rfc-editor.org/info/rfc9784>. | 2025, <https://www.rfc-editor.org/info/rfc9784>. | |||
| 7.2. Informative References | 7.2. Informative References | |||
| [RFC7623] Sajassi, A., Ed., Salam, S., Bitar, N., Isaac, A., and W. | [RFC7623] Sajassi, A., Ed., Salam, S., Bitar, N., Isaac, A., and W. | |||
| Henderickx, "Provider Backbone Bridging Combined with | Henderickx, "Provider Backbone Bridging Combined with | |||
| Ethernet VPN (PBB-EVPN)", RFC 7623, DOI 10.17487/RFC7623, | Ethernet VPN (PBB-EVPN)", RFC 7623, DOI 10.17487/RFC7623, | |||
| September 2015, <https://www.rfc-editor.org/info/rfc7623>. | September 2015, <https://www.rfc-editor.org/info/rfc7623>. | |||
| [RFC8214] Boutros, S., Sajassi, A., Salam, S., Drake, J., and J. | [RFC8214] Boutros, S., Sajassi, A., Salam, S., Drake, J., and J. | |||
| Rabadan, "Virtual Private Wire Service Support in Ethernet | Rabadan, "Virtual Private Wire Service Support in Ethernet | |||
| End of changes. 3 change blocks. | ||||
| 5 lines changed or deleted | 5 lines changed or added | |||
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