HP-UX IPv6 Transport Administrator Guide HP-UX 11i v3 (5992-6426, May 2013)
Table Of Contents
- HP-UX IPv6 Transport Administrator Guide
- Contents
- About This Document
- 1 Features Overview
- IPv6 Transport
- New IPv6 Transport Features
- Support for RFC 3542 (Advanced Sockets API for IPv6)
- Configurable Policy Table Support
- Anycast Address Support
- Support for RFC 4291 (IP Version 6 Addressing Architecture)
- Support for RFC 4213 (Basic Transition Mechanisms for IPv6 Hosts and Routers)
- Support for RFC 3484 (Default Address Selection for Internet Protocol version 6 (IPv6))
- Support for RFC 3493 (Basic Socket Interface Extensions for IPv6)
- Support for RFC 4584 (Extension to Sockets API for Mobile IPv6)
- Support for RFC 4193 (Unique Local IPv6 Unicast Addresses)
- Support for RFC 4443 (Internet Control Message Protocol for IPv6 (ICMPv6))
- Support for IPv6 over VLAN
- Ability to Disable Autoconfiguration Based on Router Advertisements
- Support for RFC 3810 (Multicast Listener Discovery Version 2 (MLDv2))
- Support for RFC 3376 (Internet Group Management Protocol Version 3 (IGMPv3))
- Support for RFC 3678 (Socket Extension to Multicast Source Filter API)
- Support for RFC 4941 (Privacy Extensions for Stateless Address Autoconfiguration in IPv6)
- New ndd Tunables
- IPv6 Transport Features Available in the Core HP-UX 11i v3 Operating System
- Limitations
- IPv6 Transport
- 2 Configuration
- Configuring IPv6 Interfaces and Addresses
- Stateless Autoconfiguration
- Manual Configuration
- Configurable Policy Table for Default Address Selection for IPv6
- Host Names and IPv6 Addresses
- 3 Troubleshooting
- 4 IPv6 Addressing and Concepts
- 5 IPv6 Software and Interface Technology
- 6 Utilities
- A IPv6 ndd Tunable Parameters
- Index
The IPv6 Neighbor Discovery Protocol (ndp) uses ICMPv6. An IPv6-only utility, ndp and
the Neighbor Discovery Protocol encompass the functionality of the IPv4 Address
Resolution Protocol (ARP) and the arp utility. ndp also provides some of the
address-configuration functionality found in protocols BOOTP and DHCP.
A network device connecting to a network for the first time can learn all parameters
necessary to function, solely through Neighbor Discovery information. Both IPv6 hosts
and routers advertise their presence using neighbor advertisements and route
advertisements, respectively. When an IPv6 host first comes up, it advertises its link-layer
address, and solicits neighbor and router information.
For more information, see the ndp(1m) and ndp(7p) man pages and RFC 2461,
“Neighbor Discovery for IP Version 6 (IPv6).”
Stateless Address Autoconfiguration
Stateless address autoconfiguration requires no manual configuration of hosts, minimal
configuration of routers, and no additional servers. The primary interface (lanX:0) is
automatically assigned a link-local address by the system when the interface is configured.
This allows each IPv6 interface to have at least one source address that can be used by
Neighbor Discovery. Therefore, it is not advisable to assign other addresses to the primary
interface besides the link-local address. See RFC 4291 “IP Version 6 Addressing
Architecture” for details.
NOTE: You can use the ip6_nd_autoconf variable to enable or disable stateless
address autoconfiguration.
Link-Local Address Assigned Automatically
A link-local address is formed by prepending the well-known link-local prefix FE80::/10
to the interface identifier which is typically 64 bits long and based on EUI-64 identifiers.
Link-local addresses are sufficient for allowing communication among IPv6 hosts attached
to the same link.
Figure 9 shows the Primary Interface Autoconfiguration steps performed after using the
ifconfig command, which is as follows:
ifconfig lan0 inet6 up
48 IPv6 Addressing and Concepts