A New Internet-Draft is available from the on-line Internet-Drafts
directories.
Title : Ivip (Internet Vastly Improved Plumbing) Architecture
Author(s) : R. Whittle
Filename : draft-whittle-ivip-arch-00.txt
Pages : 109
Date : 2007-7-24
Ivip (Internet Vastly Improved Plumbing) is a proposed global system
of routers and either collection of databases which control the
tunneling of some of these routers. Database changes affect all
Ingress Tunnel Routers (ITRs) within a few seconds, controlling which
Egress Tunnel Router (ETR) they tunnel each packet to, depending on
the packet's destination address. The ETR used by a host with an
Ivip-mapped address is typically located in the same network as this
destination host. The ETR decapsulates packets and forwards them to
the destination host. A second type of ETR known as a Translating
Tunnel Router (TTR) is used for mobile-IP, with the mobile node
creating two-way tunnels to one or more nearby TTRs. Ivip enables a
subset of IPv4 and IPv6 address space to be portable (used via any
ISP which has an ETR) and to be suitable for multihoming (connection
to the Net via two or more ISPs) - without involving BGP and without
requiring any changes to host operating systems or applications.
This is a form of "locator-ID separation" and is based on some
principles derived from LISP (Locator/ID Separation Protocol). IP
addresses in the subset of address space which is subject to being
tunneled by ITRs are known as Destination Identifiers (DIDs). ITRs
and ETRs are located on ordinary BGP Reachable IP (BRIP) addresses.
The databases and ITRs map DID addresses to an ETR's BRIP address
with a granularity of a single IPv4 address or a /64 prefix for IPv6.
These two granularities are 256 and 64k times finer than is typically
possible with BGP. This proposal is intended to resolve many of the
problems discussed in the October 2006 Amsterdam IAB Routing and
Addressing Workshop (RAWS). Ivip's primary goals include the more
efficient utilisation of IPv4 space and enabling millions of end-
users to achieve portability and multihoming without involving BGP,
without fuelling the growth of the global BGP routing table, and
without requiring these end users to have ASNs or to acquire
conventional prefixes of PI (Provider Independent) BGP reachable
address space.
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