NonStop NS-Series Planning Guide (H06.03+)

Planning for LAN Communications
HP Integrity NonStop NS-Series Planning Guide—529567-004
6-16
Remote Dial-In and Dial-Out Support
same subnet. If a server is configured to receive dial-ins, the server must occupy the
same subnet as the system console receiving the dial-ins.
For best OSM performance, no more than 10 servers should be included within one
subnet.
Because all servers are shipped with the same preconfigured IP addresses for MSP0,
MSP1, $ZTCP0, and $ZTCP1, you must change these IP addresses for the second
and subsequent servers before you can add them to the LAN.
You must change the preconfigured IP addresses of the second and subsequent
system consoles before you can add them to the LAN.
Remote Dial-In and Dial-Out Support
This subsection includes:
If you plan to configure a system for both dial-in and dial-out remote support, HP
recommends that you configure two system consoles and two modems. One system
console and modem is used for dial-in access to the system, and the other system
console and modem is used for dial-out access from the system. Dial-ins and dial-outs
are possible using only one system console and one modem on a system, but this
configuration lacks fault-tolerance.
Dial-Out
Two system consoles (primary and backup) can be designated as primary and backup
dial-out points for each system. If your system has only one system console, this
workstation is the dial-out point. If the dedicated maintenance LAN connects to multiple
servers, HP recommends that the primary and backup system consoles each be
configured to receive incident reports from no more than 10 servers on the LAN.
Dial-In
All system consoles provided by HP include remote operations software for dial-in
capability, and any system console connected to a modem can receive a dial-in. The
workstation must reside on the same subnet as the primary system console. For more
information about dial-in and dial-out, refer to the OSM Notification Director online help.
Topic Page
Dial-Out
6-16
Dial-In 6-16
Note. Remote access and remote notification are not available in countries where the modem
provided by HP is not certified. In these countries, you cannot use the OSM client software to
dial out to or accept dial-in communications from a service provider.
Caution. Removal of hardware that has not failed registers as a failure and causes a dial-out
to a remote support center.