NonStop NS1200 Planning Guide

If a DHCP server is already present on the network to which these components will be connected,
you can use that server. If your network is not equipped with a DHCP server, work with your
account team to identify available options.
Some guidelines for configuring the DHCP server:
• Configure the range of IP addresses to be assigned dynamically by the DHCP server to be
in the same subnet as existing IP addresses on the LAN and any static IP address included
in the dedicated service LAN.
• IP addresses for these components should remain static:
— The four IP addresses reserved for the OSM Low-Level Link and Service Connection
Do not include these address in the pool of addresses the DHCP uses for address
assignment.
— The UPS (recommended but not required)
Static or Dynamic IP Addresses
Various components within the dedicated service LAN can have static or dynamic IP addresses.
This sample shows the address in an example dedicated service LAN, but any combination is
possible:
IP AddressComponent
StaticMaintenance switches*
StaticUPSs (if the system has them)*
StaticTCP/IP process $ZTCP0**
StaticTCP/IP process $ZTCP1**
DynamicVIO enclosures
DynamicSystem consoles
*If a combination of dynamic and static IP addresses are
used in the LAN configuration, HP recommends that the
maintenance switches and UPSs (if the system has them)
be configured with static IP addresses.**You do not need
to reconfigure the IP addresses for the TCP/IP processes.
Ethernet Cables
Ethernet connections for a dedicated service LAN require Category 5 unshielded twisted-pair
(UTP) cables.
SWAN Concentrator Restrictions
• Isolate any ServerNet wide area networks (SWANs) on the system. The system must be
equipped with at least two LANs: one LAN for SWAN concentrators and one for the
dedicated service LAN.
• Most SWAN concentrators are configured redundantly using two or more subnets. Those
subnets also must be isolated from the dedicated service LAN.
• Do not connect SWANs on a subnet containing a DHCP.
System-Up Dedicated Service LAN
When the system is up and the OS running, the ME connects to the NonStop NS1200 system’s
dedicated service LAN using connections from the maintenance switch to ME ENET ports on
each VIO enclosure. To use the OSM Service Connection and OSM Notification Director, you
must have connections from the maintenance switch to Ethernet ports on each VIO enclosure.
Dedicated Service LAN 71