HP-UX PPP Enhancements - PPPoE and PPPv6 for TOUR 1.0

hp-ux ppp enhancements – pppoe and pppv6 white paper
August 2003
executive
summary
This white paper presents a macro view of PPP enhancements supported on
HP-UX 11i v1 operating system.
It provides information about the marketing opportunities that PPP
enhancements provide. In addition, the document limns the technology
strategy, HP’s offering, software availability, and so forth.
In the subsequent sections, this white paper introduces PPPoE and PPPv6,
illustrates the product architecture, etcetera.
problem
statement
PPP on HPUX has been enhanced to provide some additional features, such as
the following:
 Point-to-Point Protocol over Ethernet (PPPoE) - enables establishment of
PPP connections over Ethernet.
 IPv6 support for PPP (PPPv6) - supports IPv6 Network control protocol
(IPv6CP) on PPP links.
technology
strategy
HP envisions its PPP enhancements as being a profound and welcome change
in the way multi-protocol packets are transmitted over networks, and is
committed to ongoing research and development in this area.
pppoe/v6
description
Point-to-Point Protocol over Ethernet
With the advent of broadband access services, such as digital subscriber line
(DSL), benefits of high-speed Internet access are now available to the home
and SOHO users at reasonable prices. PPP over Ethernet (PPPoE) is a new
standard that allows PPP sessions to be carried over Ethernet networks. Point-to-
Point Protocol over Ethernet enables multiple hosts on a shared, Ethernet to
start PPP sessions to multiple destinations via one or more bridging modems.
PPPoE provides the ability to connect multiple hosts at a remote site in a
manner similar to dial-up services using PPP. Each host utilizes its own PPP stack
and the user is presented with a familiar "dial-up networking" user interface.
Access control, billing, and type of service can be controlled on a per-user,
rather than a per-site basis. This prevents them from using permanent
connections and over-subscribing their IP address pool. By combining the most
cost-effective LAN technology, Ethernet, with the demonstrated scalability and
administrative controls of PPP, ISPs, and carriers are presented with a new
approach to speed deployment of high-speed Internet services with proven
and familiar technologies.
Point-to-Point Protocol for IPv6
IPv6, also called IPng, has achieved the maturity up to deployment. IPv6 has
moved from Labs and Universities to ISPs and other service providers. As a result
of which, link layer technologies should now carry IPv6 as well as IPv4
datagram. PPP is one of the important link layer technologies that transmit
TCP/IP packets over serial link. Therefore, PPP on HP-UX has been enhanced to
support the IPv6 Network control protocol.
IPV6CP is a network control protocol for establishing and configuring Internet
Protocol Version 6 over PPP. It specifies a mechanism for forming the link local
address of the PPP peers. IPV6CP uses the same packet exchange mechanism
as the Link Control Protocol (LCP). IPV6CP packets may not be exchanged until
PPP has reached the Network-Layer Protocol phase. IPV6CP negotiates the IPv6
interface identifier while NCP becomes functional.
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