NonStop NS1000 Planning Guide (H06.06+)

Control, Configuration, and Maintenance Tools
HP Integrity NonStop NS1000 Planning Guide—542527-002
B-5
System Console Configurations
The dedicated service LAN is normally connected to the operations LAN using a single
connection. If both sides of the dedicated service LAN connect directly to the
operations LAN, you must:
•
Enable Spanning Tree Protocol (STP) in switches or routers that are part of the
operations LAN.
•
Change the preconfigured IP address of the backup system console before you
add it to the LAN
Multiple System Consoles Managing One System
Two maintenance switches provide fault tolerance and extra ports for adding system
consoles. You must change the preconfigured IP addresses of the second and
subsequent system consoles before you can add them to the LAN.
Cascading Ethernet Switch or Hub Configuration
Additional Ethernet switches or hubs can be connected (cascaded) to the maintenance
switches already installed. Primary and backup system consoles and the server must
be on the same subnet.
You must change the preconfigured IP addresses of the second and subsequent
system consoles before you can add them to the LAN.
Caution. Networks with more than one path between any two nodes can cause loops that
result in message duplication and broadcast storms that can bring down the network. If a
second connection is used, refer to the documentation for the ProCurve 2524 maintenance
switch and enable STP in the maintenance switches. STP ensures only one active path at any
given moment between two nodes on the network. In networks with two or more physical paths
between two nodes, STP ensures only one active path between them and blocks all other
redundant paths.