NonStop S-Series Planning and Configuration Guide (G06.29+)

Planning for LAN Communications
HP NonStop S-Series Planning and Configuration Guide—523303-021
11-9
Operating Configurations of Dedicated Service LANs
Multiple System Consoles Managing One System
This subsection contains three variations of this configuration:
•
Primary and Backup System Consoles Managing One System (Recommended
Operating Configuration) on page 11-9
•
Multiple System Consoles Managing One System on page 11-10
•
Cascading Ethernet Switch or Hub Configuration on page 11-11
Primary and Backup System Consoles Managing One System
(Recommended Operating Configuration)
This configuration is the recommended operating configuration.
This configuration is similar to the setup configuration but includes a second Ethernet
switch or hub and a backup system console with a modem for fault tolerance. The
Ethernet switches or hubs provide a dedicated LAN in which all nodes use the same
subnet. A reversing switch allows a cable to link the two Ethernet switches or hubs.
You must change the preconfigured IP address of the backup system console before
you add it to the LAN.
Note. A subnet is a network division within the TCP/IP model. Within a given network, each
subnet is treated as a separate network. Outside that network, the subnets appear as part of a
single network. The terms subnet and subnetwork are used interchangeably.
VST998.vsd
Backup
System Console
Dial-In
Modem
Remote Service
Provider (GCSC)
Server
Primary
System Console
Dial-Out
Modem
Remote Service
Provider (GCSC)
Ethernet
Switch or
Hub 1
Ethernet
Switch or
Hub 2