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

Planning for LAN Communications
HP Integrity NonStop NS-Series Planning Guide—529567-004
6-2
Dedicated Maintenance LAN
•
Processor switch on the X fabric for OSM Low-Level Link to a down system
•
Processor switch on the Y fabric for OSM Low-Level Link to a down system
•
IOAM module 2 ServerNet board for OSM control of the I/O hardware
•
IOAM module 3 ServerNet board for OSM control of the I/O hardware
•
UPS (optional) for power-fail monitoring
•
T1200 Fibre Channel to SCSI converter (optional) for Fibre Channel tape
•
Connections to both X and Y fabrics (for fault-tolerance) for OSM system-up
maintenance (any one of these connections is valid as long as there are at least
two connections total):
°
Gigabit 4-port ServerNet adapters (G4SAs) installed in an IOAM enclosure
°
Ethernet 4-port ServerNet adapters (E4SAs), Fast Ethernet ServerNet
adapters (FESAs), or Gigabit Ethernet ServerNet adapters (GESA) installed in
a NonStop S-series I/O enclosure with IOMF 2 CRUs
You can configure the dedicated maintenance LAN as described in the OSM Migration
Guide. HP recommends that you use a fault-tolerant LAN configuration.
A fault-tolerant configuration includes these connections to two maintenance switches:
•
A system console to each maintenance switch.
•
Processor switch on the X fabric to first maintenance switch
•
Processor switch on the Y fabric to second maintenance switch
•
G4SA, E4SA, FESA, or GESA on the X fabric to first maintenance switch
•
G4SA, E4SA, FESA, or GESA on the X fabric to second maintenance switch
To avoid possible conflicts on the LAN when using two maintenance switches, install
and configure one switch completely, including assigning its IP address, before
installing the other. If processor switches or IOAM ServerNet switch boards will have
static IP addresses, configure one completely, including assigning the IP address,
before configuring the other. See NonStop NS-Series Hardware Installation Manual.
Only one connection between the maintenance switches is permitted. More than one
connection will overload network traffic and prevent all use of the maintenance LAN.