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Istruzioni per l'uso HP, Modello HP Integrity NonStop Service Procedures

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About DHCP, TFTP, and DNS Services for NonStop Systems
The purpose of this document is to help you understand:

The importance of DHCP, TFTP, and DNS services for HP Integrity NonStop BladeSystems,
NonStop NS2200 series systems, and any HP Integrity NonStop NS-series systems with CLuster
I/O Modules (CLIMs) attached.

The “Rules for DHCP, TFTP, and DNS Services” (page 4) on a dedicated service LAN (also
called a maintenance LAN).

“How to Migrate DHCP, TFTP, and DNS Services” (page 5) between NonStop system consoles
and CLIMs.

How to locate, check the status of, or troubleshoot the DHCP, TFTP, and DNS services for a
dedicated service LAN “On a NonStop System Console” (page 6) or “On CLIMs” (page 10).
NonStop systems require Internet protocol (IP) addresses for the components that are connected
to the dedicated service LAN. Each component must have a unique IP address that does not conflict
with the IP addresses of other components on the LAN. The dedicated service LAN is set up and
configured by your service provider during system installation, as described in the hardware
installation manual for your NonStop system type and in the NonStop Dedicated Service LAN
Installation and Configuration Guide
.
It is important to understand the purpose of DHCP, TFTP, and DNS services on the dedicated service
LAN, why they are especially crucial for NonStop BladeSystems and NonStop NS2200 series
systems, and the “Rules for DHCP, TFTP, and DNS Services” (page 4).
The purpose of DHCP, TFTP, and DNS services on the LAN include:

DHCP provides the dynamic IP addresses to DHCP-enabled devices in the dedicated service
LAN, such as onboard administrators (OAs) and CLIM Integrated Lights Out (iLO) services.

TFTP is used by DHCP to download the Halted State Services (HSS) files to the blade server
processors in NonStop BladeSystems and NonStop NS2200 series systems.

DNS services are required for addressing a number of devices on the dedicated service LAN
that acquire their IP addresses dynamically from DHCP. DNS provides the service to assign
a name to the dynamically assigned IP addresses for these devices and provides the service
that allows other entities on the network to resolve device names to their assigned IP address.
Rules for DHCP, TFTP, and DNS Services
Because of the critical nature of these services to NonStop BladeSystems and NonStop NS2200
series systems – they must have access to the services in order to start the processors – the following
rules apply for all LANs containing either of those systems; they are strongly recommended but,
except where noted, are not required for all other NonStop NS-series systems. Also, the same rules
(or recommendations) apply whether a NonStop system is configured on a dedicated service LAN
of its own or is connected to a service LAN servicing up to eight NonStop systems.

Two NonStop system consoles, a primary and a backup, to manage the dedicated service
LAN.

Two and only two sources DHCP, TFTP, and DNS services on the dedicated service LAN. They
may be located on either the NonStop system consoles or on two CLuster I/O Modules (CLIMs)
attached to a system connected to the LAN. All other sources of these services on the LAN
should be disabled. Note: while having a second source of these services is recommended
rather than required for NonStop NS-series systems, having no more than two is a requirement
for NonStop NS-series systems, in order to avoid duplicate/conflicting IP addresses.

For NonStop BladeSystems and NonStop NS2200 series systems, the same two consoles or
CLIMs also provide the Halted State Services (HSS) file required to start the processors. It is
important to keep those file versions consistent in both places. The NonStop System Console
Installer Guide
describes how to download the latest version from the NonStop System Console
4
About DHCP, TFTP, and DNS Services for NonStop Systems


...

Questo manuale è adatto anche per i modelli :
Computer - HP Integrity NonStop Troubleshooting Tips (594.01 kb)

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