Introduction to Networking for NonStop S-Series Servers

TCP/IP Network Connections
Introduction to Networking for HP NonStop S-Series Servers—520670-005
10-10
NonStop TCP/IPv6 Architecture and Features
NonStop TCP/IPv6 Architecture and Features
NonStop TCP/IPv6 shares the same architecture and features of Parallel Library
TCP/IP and adds IP version 6 (IPv6) functionality. NonStop TCP/IPv6 is available as of
G06.20. Since Parallel Library TCP/IP is now a mature product, any new features that
are added in the future will be added to NonStop TCP/IPv6 rather than to Parallel
Library TCP/IP.
Internet Protocol Version 6 (IPv6), as defined in RFC 2460, is the replacement network
layer protocol for the Internet, designed to replace the current Internet Protocol Version
4 (IPv4). The following list highlights some of the features of IPv6:
•
IPv6 Address
The IPv6 address is 128 bits in length (compared to the 32-bit IPv4 address) and
uses a new text-representation format as follows:
x:x:x:x:x:x:x:x
The x is a hexadecimal value of a 16-bit piece of the address. For example, the
following addresses are IPv6 addresses:
FEDC:BA98:7654:3210:FEDC:BA98:7654:3210
1070:0:0:0:0:800:200C:417B
•
Neighbor Discovery Protocol
IPv6 nodes on the same link employ the neighbor discovery protocol to discover
each other's presence, determine each other's link-local addresses, find routers,
and maintain reachability information about paths to active neighbors and remote
destinations.
•
Stateless address autoconfiguration
Each IPv6-enabled subnet can be configured to auto configure its addresses
based on the information contained in neighbor discovery router advertisement
packets.
NonStop TCP/IPv6 can be run in INET mode; in this mode it is a direct replacement for
Parallel Library TCP/IP and supports only IPv4 communications. The three operating
modes of NonStop TCP/IPv6 are:
Mode Description
INET In INET mode, NonStop TCP/IPv6 supports only IPv4 communications and is
a direct replacement for Parallel Library TCP/IP.
INET6 In INET6 mode, NonStop TCP/IPv6 supports only IPv6 communications.
Changes must be made to Guardian and OSS sockets applications to
support IPv6 communications.
DUAL IN DUAL mode, NonStop TCP/IPv6 supports both IPv4 and IPv6
communications. Changes must be made to Guardian and OSS sockets
applications to support IPv6 communications.