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

Control, Configuration, and Maintenance Tools
HP Integrity NonStop NS-Series Planning Guide—529567-004
5-8
Dedicated Maintenance LAN
Dedicated Maintenance LAN
A dedicated maintenance LAN provides connectivity between the OSM console
running in a PC and the maintenance firmware in the system hardware. This
maintenance LAN uses a ProCurve 2524 Ethernet switch for connectivity between the
Integrity NonStop NS-series hardware elements (such as the p-switches in ServerNet
switch boards for each IAOM) and the system console. For more information on the
maintenance LAN, see Dedicated Maintenance LAN on page 6-1.
System-Down OSM Low-Level Link
In Integrity NonStop NS-series systems, the maintenance entity (ME) in the p-switches
provides dedicated maintenance LAN services via the OSM Low-Level Link for both
OS coldload, system management, and hardware configuration when hardware is
powered up but the OS is not running. LAN connections are direct from the
maintenance PIC in slot 1 of the p-switch to the maintenance switch that is installed in
the Integrity NonStop NS-series cabinet. This illustration shows the LAN connections
for the OSM Low-Level Link:
System-Up Dedicated Maintenance LAN
When the system is up and the OS running, the ME connects to the NonStop
NS-series system’s dedicated maintenance LAN using one of the PIFs on each of two
G4SAs. This connection enables OSM Service Connection and OSM Notification
VST344.vsd
Maintenance Switch
Processor
Switch
X ServerNet
Maintenance PIC - ENet
(Slot 1, Port 3)
11 1310 12
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
1234567
89
Processor
Switch
Y ServerNet
11 1310 12
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
123456789