TCP/IPv6 Configuration and Management Manual (G06.29+, H06.03+, J06.03+)

Overview of NonStop TCP/IPv6
HP NonStop TCP/IPv6 Configuration and Management Manual—524523-012
2-10
Ethernet Failover, NonStop Operations
restrict itself to specific interfaces, has direct access (with no inter-process, message-
system hop) to the network adapter.
The loopback SUBNET is assigned logically to the default LNP, but each LNP can be
viewed as having its own copy of the loopback interface. Applications on an LNP use
the loopback interface to communicate with other applications on the same LNP
without using the local area network as is done in the current product. The IPv4
loopback address "127.0.0.1" and the IPv6 loopback address "::1" can be used by
applications on any LNP to communicate with other applications on the same LNP.
Normally, IP addresses assigned to an interface within one LNP cannot be assigned to
another interface in a different LNP, but the loopback addresses are treated differently.
For specific guidelines for managing LNP, see Managing LNPs on page 6-23.
Ethernet Failover, NonStop Operations
NonStop TCP/IPv6 provides fault tolerance at the adapter level by using a feature
called Ethernet failover. With Ethernet failover, you can configure your network to
continue running if an adapter fails or during maintenance and replacement of an
adapter. Ethernet failover allows TCP and UDP sessions to continue operating if
cabling or adapter failures occur. With Ethernet failover, network traffic automatically
migrates from the faulty LIF to the working LIF. For more information about this feature,
see Fault-Tolerant Operations, Ethernet Failover Guidelines on page 6-3.
NonStop TCP/IPv6 Components
The product modules for NonStop TCP/IPv6 on a NonStop S-series server consist of:
The product modules for NonStop TCP/IPv6 on an Integrity NonStop server consist of:
Table 2-2. NonStop TCP/IPv6 Components and Product Numbers for NonStop
S-Series Servers
Product Module Object Code Name Product Number
TCP/IPv6 Manager Process TCP6MAN T1266G06
TCP/IPv6 Monitor Process TCP6MON T1265G06
TCP/IPv6 Shared Resource Library ZTCP6REL/ZTCP6SRL T1265G06
TCP/IPv6 Socket Provider Process TCP6SAM T1265G06
TCP/IPv6 Ptrace Product Module ZTC6PTR T1267G06
TCP/IPv6 SCF Product Module ZTC6SCF T1268G06
TCP/IPv6 Neighbor Discovery Process ND6HOSTD T2701G06
Native Socket Library T0372G08
Socket Library T9550G08