![Compaq Storageworks SAN Switch 8 Installation And Hardware Manual Download Page 35](http://html1.mh-extra.com/html/compaq-storageworks/san-switch-8/san-switch-8_installation-and-hardware-manual_2646671035.webp)
Compaq Confidential – Need to Know Required
Writer: Hilary Stead Project: Compaq StorageWorks SAN Switch 8 Installation and Hardware Guide Comments:
Part Number: EK-BCP24-IA / 161355-001 File Name: E-CH4 DIAGNOSTICS.DOC Last Saved On: 9/30/99 10:27 AM
Chapter
4
Diagnostics
This chapter discusses diagnostic testing using Telnet commands. See
Chapter 5, “Error Messages,” for information about the error messages
generated by diagnostic tests.
Diagnostic Overview
The Compaq StorageWorks SAN Switch 8 is designed for maintenance-free
operation. The switch’s self-diagnostic capabilities aid in isolating equipment
or fabric failures. You can perform diagnostics when using a Telnet session.
Isolating a System Fault
Various loopback paths are built in to the switch hardware for diagnostic
purposes. A loopback path test within the switch verifies the proper internal
Fibre Channel port logic functions and the paths between interfaces and
central memory. The switch diagnostics also support external loops, which
include the motherboard and GBIC modules in cross-port configurations.
These port-to-port diagnostics let you check for installed fiber cables and
isolate port faults.