Title: Enterprise Multihoming using Provider-Assigned IPv6 Addresses without Network Prefix Translation: Requirements and Solutions
Abstract: 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 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.
Publication Year: 2019
Publication Date: 2019-12-01
Language: en
Type: report
Indexed In: ['crossref']
Access and Citation
Cited By Count: 2
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