NonStop NS1000 Planning Guide (H06.08+)

• Connect one Ethernet port in each VIO enclosure to each maintenance switch.
• Connect one maintenance switch to an HP extension bar that is powered by the UPS. HP
extension bars are installed in place of a PDU on the rear right side of the modular cabinet.
CAUTION: To avoid possible conflicts on the LAN:
If the configuration includes two maintenance switches, install and configure one switch
completely, including assigning its IP address, before you install the other.
Only one connection between the maintenance switches is permitted. More than one
connection overloads network traffic, rendering the dedicated service LAN unusable.
If VIO enclosures will have static IP addresses, configure one completely, including assigning
the IP address, before you configure the other.
This illustration shows a fault-tolerant LAN configuration with two maintenance switches:
114 Control, Configuration, and Maintenance Tools