Installation and Reference Guide (J3210A, J3212A, J3200A, J3202A, J3204A) 1996-08

5-4
Troubleshooting
Diagnostic Tests
Troubleshooting
Diagnostic Tests
The HP AdvanceStack Assistant and ASCII console provide tests and indica-
tors that can be used to monitor the hub and its network connections.
Testing the Hub Only
If you believe that the hub is not operating correctly, remove and reinsert the
power cord for that hub. This procedures will cause the hub to complete its
power-on self-test. If any error conditions exist in the hub, the LEDs should
display the condition. See the Switching Hubs Reference manual to interpret
the LED display.
Possible Failure of a Redundant Management Module
If the second Management Module takes over because the first one failed,
follow these steps:
■ rediscover the network if you are using HP AdvanceStack Assistant
■ if you only configured bootp for other module, you’ll have to configure
it for the other one now.
■ if you are using IP, and you do not use bootp for the IP addresses, set
the IP addresses for each segment using the ASCII console. If you are
using IPX, no configuration is necessary.
■ if you have an RS-232 cable or modem attached to the management
module, move the cable to the other module’s RS-232 port
The redundant Management Module will automatically take over and config-
ure the stack with no user intervention.
Call your HP-authorized dealer or reseller to service the Management Module.