Expand Configuration and Management Manual (H06.21+, J06.10+)

Configuring Expand-Over-IP Lines
Expand Configuration and Management Manual — 529522-013
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NonStop TCP/IP Process
NonStop TCP/IP Process
The Expand-over-IP line-handler process uses the services of a NonStop TCP/IP
process to provide TCP/IP connectivity. The NonStop TCP/IP process and SUBNET
associated with the Expand-over-IP line-handler process must be defined and started
before the Expand-over-IP line-handler process can be started. It must be configured
in the same processor pair as the Expand-over-IP line-handler process.
For more information on configuring and managing NonStop TCP/IP processes, see
the TCP/IP Configuration and Management Manual.
NonStop TCP/IPv6 Process
NonStop TCP/IPv6 can also provide TCP/IP connectivity for the Expand-over-IP line-
handler process. NonStop TCP/IPv6 can optionally provide support for IP version 6
communications and has a feature called logical network partitioning (LNP) that allows
you to configure the line-handler process such that it only has access to a configured
set of IP addresses. (In NonStop TCP/IPv6 without LNP, the Expand line-handler
process has access to all the IP addresses in the subsystem.) TCP/IPv6 provides
performance enhancements and eliminates the need to configure the line-handler
processes in the same CPU pair as the TCP/IP processes. In addition, NonStop
TCP/IPv6 provides Ethernet failover capabilities. (NonStop TCP/IPv6 only supports
LAN adapters.)
The line handler supports the 128-bit addressing scheme used in IPv6 communications
in addition to the 32-bit addresses used by IPv4.
CIP Process
Cluster I/O Protocols (CIP) can also provide TCP/IP connectivity for the Expand-over-
IP line-handler process. CIP can optionally provide support for IPv6 communications
and has a feature similar to the NonStop TCP/IPv6 feature of logical network
partitioning (LNP) that allows you to configure the line-handler process such that it only
has access to a configured set of IP addresses. This feature is provided through the
PROVIDER SCF object. CIP provides performance enhancements and eliminates the
need to configure the line-handler processes in the same CPU pair as the TCP/IP
processes. In addition, CIP provides Ethernet failover capabilities. (CIP only supports
Ethernet adapters.)
The line handler supports the 128-bit addressing scheme used in IPv6 communications
in addition to the 32-bit addresses used by IPv4.
Redundancy in Ethernet Adapters
Redundancy in Ethernet adapters (or CLIMs) and IP network routes can be applied by
multi-line Expand-over-IP paths and multi-CPU paths, where the member paths are
Expand-over-IP. These configurations offer multiple, parallel connections between a
NonStop system and one of its neighbors. Use these configurations to get potentially