NonStop S-Series Planning and Configuration Guide (G06.26+)
HP NonStop S-Series Planning and Configuration Guide—523303-017
11-1
11
Planning for LAN Communications
This section describes requirements and considerations for configuring local area 
networks (LANs) for NonStop S-series servers. 
Except for the disk drives and tape drives connected to SCSI ports on PMF CRUs and 
IOMF CRUs, peripheral devices connect to a server through a local area network 
(LAN). 
Dedicated LANs
NonStop S-series servers require a dedicated LAN for each of these sets of 
components:
•
Components related to OSM or TSM
•
Components related to SWAN concentrators
A dedicated LAN can connect only to components specified by HP. No other access to 
the LAN is permitted.
Dedicated Service LAN for OSM or TSM
The dedicated service LAN for use by OSM or TSM can connect only to system 
consoles, the Ethernet ports on the PMF CRUs in group 01, Ethernet switches or hubs, 
and maintenance switches provided by HP. 
Dedicated LANs 11-1
Dedicated Service LAN for OSM or TSM 11-1
Dedicated LAN for SWAN Concentrators 11-2
Public LANs 11-2
Multiple IP Addresses Needed 11-4
Planning for a Dedicated Service LAN 11-5
Initial Dedicated Service LAN Configuration 11-5
Operating Configurations of Dedicated Service LANs 11-6
Planning for Remote Dial-In and Dial-Out Support 11-13
Note. System consoles can also be connected to a public LAN. However, the dedicated LAN 
is required for installation and use of the complete set of OSM or TSM client applications (the 
Low-Level Link and Notification Director applications cannot be used on a system console 
connected to a public LAN). See Public LANs
 on page 11-2.










