Transport Optional Upgrade Release (TOUR) 2.0 Release Notes (April 2004)

Transport Optional Upgrade Release (TOUR) 2.0 Release Notes
What Is in This Version
8
IP6-in-IP tunnel configuration allows transmission of IPv6 packets encapsulated in
an IPv4 header. IP6-in-IP represents the tunneling scenario where isolated IPv6
domains are communicating across IPv4 networks. IP6-in-IP tunneling is not new in
TOUR 2.0, it is supported in base (default) HP-UX 11i v2.
— Automatic Tunneling using IPv4-compatible addresses is no longer
supported: Automatic Tunneling using the special IPv6 address type known as
“IPv4-compatible address”, is no longer supported with TOUR 2.0. The IETF is in the
process of deprecating this mechanism in favor of the generic automatic tunneling
mechanism known as “6to4.”
HP-UX Point-to-Point Protocol (PPP) Enhancements (PPPoE and
PPPv6)
This section provides a brief summary of the PPPoE and PPPv6 features included in TOUR
2.0.
PPPoE Features
The key features of PPPoE are as follows:
• Supported over a cost-effective LAN technology, such as Ethernet.
• Conforms to RFC 2516, “A Method for Transmitting PPP Over Ethernet (PPPoE).”
In TOUR 2.0, these PPPoE features are supported on both HP-UX 11i v1 and HP-UX 11i v2.
In TOUR 1.0, they were only supported on HP-UX 11i v1.
PPPv6 Features
The key features of PPPv6 are as follows:
• PPPv6 Features: The key features of PPPv6 are as follows:
— Conformance to RFC 2472: RFC 2472, “IP Version 6 over PPP,” which defines how to
transmit IPv6 packets over PPP links.
It also describes how to form IPv6 link-local addresses on PPP links and to negotiate
the type compression protocol to be used for compressing or decompressing IPv6
headers transmitted over serial lines.
— Command-line options have been added to the existing pppd daemon.
In TOUR 2.0, these PPPv6 features are supported on both HP-UX 11i v1 and HP-UX 11i v2.
In TOUR 1.0, they were only supported on HP-UX 11i v1.