SWAN Concentrator and WAN Subsystem Troubleshooting Guide
Troubleshooting Tips for the SWAN Concentrator 
and the WAN Subsystem
SWAN Concentrator and WAN Subsystem Troubleshooting Guide—426992-008
6-12
TCP/IP, Parallel Library TCP/IP, and NonStop
TCP/IPv6
TCP/IP, Parallel Library TCP/IP, and NonStop 
TCP/IPv6
Parallel Library TCP/IP is an HP product that provides increased performance and 
scalability (the previous TCP/IP product is referred to as conventional TCP/IP). 
NonStop TCP/IPv6 provides the same functionality as Parallel Library TCP/IP with the 
optional support of IPv6 addresses. NonStop TCP/IPv6 also provides the additional 
feature of logical network partitioning (LNP). 
Parallel Library TCP/IP or NonStop TCP/IPv6 can coexist with conventional TCP/IP on 
Integrity NonStop NS-series or NonStop S-series servers. The SWAN concentrator 
supports conventional TCP/IP, Parallel Library TCP/IP, and NonStop TCP/IPv6 (only 
IPv4 addresses).
When using Parallel Library TCP/IP or NonStop TCP/IPv6, you can run IOPs in any 
processor configured with Parallel Library TCP/IP or NonStop TCP/IPv6 (that is, any 
processor containing a monitor object. Monitor objects are TCPMON or TCP6MON). 
The advantage of Parallel Library TCP/IP or NonStop TCP/IPv6 is that all processors 
have direct access to the SWAN concentrator. Hence, an IOP in any processor can 
directly access the concentrator without having to access another processor containing 
the TCP/IP process which owns the SUBNET.
If you have configured a SWAN concentrator by using conventional TCP/IP, you will 
notice some changes in the SCF commands to support the Parallel Library TCP/IP or 
NonStop TCP/IPv6 configuration. 
For information about configuring conventional TCP/IP, see the TCP/IP Configuration 
and Management Manual. For information about configuring Parallel Library TCP/IP, 
see the TCP/IP (Parallel Library) Configuration and Management Manual. For 
information about configuring NonStop TCP/IPv6, see the TCP/IPv6 Configuration and 
Management Manual.
Note. As of the G06.22 RVU, the WAN subsystem only supports IPv4 addresses.










