Loopback Configuration Requirements - HP 9000 Installation And Configuration Manual

NOTE
Chapter 2

Loopback Configuration Requirements

The ACC product provides a loopback protocol module (PORTTEST)
which is included in the download file. This can be used to run a loopback
test which exercises the ACC multiplexer card, any attached multiplexer
interchange panel or cable, and the specified multiplexer port. The
loopback test is run using the loopback test feature (the lb command of
the zmntr utility. (See the ACC Utilities Reference Guide.)
The test requires the following:
• At least one ACC Mux card must be installed into the system, and it
must have a multiplexer interchange panel attached.
• The ACC product must be installed and the system must have been
rebuilt and rebooted.
• The external loopback test, which can be used to test a specific port,
requires that a loopback hood be attached to that port. (If a loopback
hood is not available, an internal loopback test can be run which just
exercises the interface card.)
• For dual interface configurations, only one ACC multiplexer card
should be attached to the multiplexer panel at a time.
The 938-channel PCI ACC cards do not require any configuration to
perform the ZMNTR "LB" loopback test, with the exception that a
loopback hood must be connected to a port in order to run an "External"
loop test. This section of the manual does not apply for these card types.
Software Installation and Verification
Installation Verification
39