![background image](http://html2.mh-extra.com/html/ibm/netfinity-series/netfinity-series_hardware-maintenance-manual_3998349020.webp)
3. Check the Device Active (green) LEDs on the Fibre
Channel Hub ports.
Active On
Green LEDs on Top Row
LED On
This indicates that a GBIC is present
and functioning properly.
LED Off
This indicates a fault condition.
Examples of a fault condition include: a
GBIC transmitter fault, an improperly
seated GBIC, an absent GBIC, or
another failed device. The port will be
in the bypass state, which precludes the
port from participating in the FC-AL.
This is the normal status of operation
for Fibre Channel Hub ports in which
GBICs are not installed.
Note
FC-AL compatible nodes must perform loop
initialization procedures at power-on to function
properly on the loop. The Fibre Channel driver
software on FC-AL nodes performs the loop
initialization or re-initialization depending on its
prior state of operation.
4. Check the Port Bypass (amber) LEDs.
Bypass
Amber LEDs on Bottom Row
LED On
If the Active (green) LED of the port is
off, the port is nonoperational and the
Bypass (amber) LED for the port is on.
If a properly functioning port (the Active
green LED is on) with a GBIC present
also has the Bypass LED on, either the
loss of signal or poor signal integrity
has caused the port to go into the
bypass state. When the port is in this
state, it cannot participate in the FC-AL.
The bypass state is also the normal
status condition when no GBIC is
present in the port, a GBIC is present
but not attached to a FC-AL node, or a
GBIC is attached to a cable assembly
with nothing attached at the opposite
end. Replacing such a port (or
removing and reinserting the GBIC into
the same port twice) is considered to be
a loop configuration change which
invokes the Loop Initialization
Procedure.
10
IBM Netfinity Fibre Channel HMM
Summary of Contents for Netfinity Series
Page 2: ......
Page 8: ...vi IBM Netfinity Fibre Channel HMM...
Page 10: ...viii IBM Netfinity Fibre Channel HMM...
Page 12: ...2 IBM Netfinity Fibre Channel HMM...
Page 28: ...Parts Listing Type 3523 Fibre Channel Hub GBIC 1 2 3 4 18 IBM Netfinity Fibre Channel HMM...
Page 30: ...20 IBM Netfinity Fibre Channel HMM...
Page 40: ...30 IBM Netfinity Fibre Channel HMM...
Page 70: ...Notice n 1 60 IBM Netfinity Fibre Channel HMM...
Page 74: ...Declaraci n 1 64 IBM Netfinity Fibre Channel HMM...
Page 84: ...IBM Part Number 10L9845 Printed in U S A S1 L 9845...