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IPv6 Address Assignment and Route Selection for End-to-End Multihoming

This document explores a layer 3 architecture suitable for small multi-home networks, focusing on hierarchical addressing and source address-based routing. It discusses route selection for merged IP addresses and clarifies target site conditions for consensus. The memo outlines basic and additional capabilities as well as test results of SABR on various platforms.

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IPv6 Address Assignment and Route Selection for End-to-End Multihoming

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  1. IPv6 Address Assignment and Route Selection for End-to-End Multihoming Kenji Ohira Kyoto University draft-ohira-assign-select-e2e-multihome-02.txt IETF #58 in Minneapolis

  2. Overview • Theme: • A layer 3 architecture which suits for multi-home available architectures on layer 3.5 or layer 4 • Target: • Small networks such as a home network or an office network with multiple upstream ISPs • So called ISP multi-homing is NOT a goal of this memo • Method: • Hierarchical Addressing (Multi-address model) • Source Address Based Routing (SABR) IETF #58 in Minneapolis

  3. Layer 7 Layer 4 Layer 3.5 Layer 3 Layer Composition Application TCP-MHO, SCTP Legacy TCP LIN6, HIP, MAST, SIM IP They merge several IP addresses into a connection. Route selection on them. This memo concerns about it. IETF #58 in Minneapolis

  4. Updates from -01 • Clarify the conditions of a target site • in order to make a consensus about small site at least • Clarify what kind of information should be announced • and how to distribute it automatically IETF #58 in Minneapolis

  5. Basic capabilities IETF #58 in Minneapolis

  6. Additional capabilities IETF #58 in Minneapolis

  7. Test Result of SABR • FreeBSD (5.1) • pf (packet filter) • pass out quick route-to (dc0 fe80::1) from 3ffe:516:7000:f00::/64 to any • pass out quick route-to (dc1 fe80::1) from 2001:200:190:f00::/64 to any • NetBSD (1.6.1) • ECMP Extension & ipfilter (need some modifications) • route add default fe80::1%fxp0 • route add default fe80::2%fxp0 -sabrnet 2001:200:190:f80:: -sabrmasklen 64 • Cisco (IOS 12.3-3) • Not Available for IPv6 We intend to link this with DHCP/RA. IETF #58 in Minneapolis

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