RFC 8678 on Enterprise Multihoming using Provider-Assigned IPv6 Addresses without Network Prefix Translation: Requirements and Solutions
rfc-editor@rfc-editor.org Thu, 19 December 2019 06:07 UTC
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Subject: RFC 8678 on Enterprise Multihoming using Provider-Assigned IPv6 Addresses without Network Prefix Translation: Requirements and Solutions
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A new Request for Comments is now available in online RFC libraries. RFC 8678 Title: Enterprise Multihoming using Provider-Assigned IPv6 Addresses without Network Prefix Translation: Requirements and Solutions Author: F. Baker, C. Bowers, J. Linkova Status: Informational Stream: IETF Date: December 2019 Mailbox: FredBaker.IETF@gmail.com, cbowers@juniper.net, furry@google.com Pages: 43 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-ietf-rtgwg-enterprise-pa-multihoming-12.txt URL: https://www.rfc-editor.org/info/rfc8678 DOI: 10.17487/RFC8678 Connecting an enterprise site to multiple ISPs over IPv6 using provider-assigned addresses is difficult without the use of some form of Network Address Translation (NAT). Much has been written on this topic over the last 10 to 15 years, but it still remains a problem without a clearly defined or widely implemented solution. Any multihoming solution without NAT requires hosts at the site to have addresses from each ISP and to select the egress ISP by selecting a source address for outgoing packets. It also requires routers at the site to take into account those source addresses when forwarding packets out towards the ISPs. This document examines currently available mechanisms for providing a solution to this problem for a broad range of enterprise topologies. It covers the behavior of routers to forward traffic by taking into account source address, and it covers the behavior of hosts to select appropriate default source addresses. It also covers any possible role that routers might play in providing information to hosts to help them select appropriate source addresses. In the process of exploring potential solutions, this document also makes explicit requirements for how the solution would be expected to behave from the perspective of an enterprise site network administrator. This document is a product of the Routing Area Working Group Working Group of the IETF. INFORMATIONAL: This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see https://www.ietf.org/mailman/listinfo/ietf-announce https://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see https://www.rfc-editor.org/search For downloading RFCs, see https://www.rfc-editor.org/retrieve/bulk Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC