NonStop NS1000 Planning Guide (H06.08+)

Whether or not the new system will receive dynamic IP addresses from a Dynamic Host
Configuration Protocol (DHCP) server, it is recommended that the IP addresses be reconfigured
as either:
• “Static IP Addresses” (page 116)
• “Dynamically Assigned IP Addresses” (page 116)
NOTE: Be aware of possible conflicts with existing operations LANs. This guide cannot
predict all possible configurations of existing LANs. If the site where you install the
maintenance switch has network administrators and specialists, consult them for information
about their current Dynamic Host Configuration Protocol (DHCP) configuration.
Static IP Addresses
Static IP addresses must be configured manually for each component using values defined for
the site. If a DHCP server already exists on the dedicated service LAN, you must configure the
static IP addresses to be in the same subnet as the dynamic IP addresses assigned by that server.
Dynamically Assigned IP Addresses
Dynamically assigned IP addresses are provided by a DHCP server that assigns an IP address
whenever a component is added or moved.
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
116 Control, Configuration, and Maintenance Tools