
4–12 HSG80 User’s Guide
Figure 4–1 Troubleshooting: Host Cannot Access Unit
Controller
loop up?
Host adapter
loop up?
Port topology
offline
Y
Y
Y
N
N
Check
host adapter
display
Y
Y
Host booted
before units
were online?
Go to
A
N
Go to
B
N
N
• Check cables
• Re-seat GLM
• Restart controller
• Restart host
• Go to Start
• Set to Loop_soft/
Loop_hard
• Restart controller
• Restart host
• Go to Start
Refer to Hub User's
Guide for information
on how to determine
this.
CLI: SHOW this
• Restart host
• Go to Start
CXO6498A
Start
This reading is
adapter-specific; see
adapter user's guide
for further details.
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