Cisco ONS 15454 Troubleshooting Manual page 295
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Also See for ONS 15454:
- Procedure manual (850 pages) ,
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- Software feature and configuration manual (232 pages)
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Chapter 2
Alarm Troubleshooting
The Fiber Channel Distance Extension Function Not Established condition occurs when the Fiber
Channel client setup or distance extension configuration is incorrect.
Clear the FC-DE-NES Alarm
Ensure that the FC client setup and distance extension configuration is correct.
Step 1
Step 2
If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call Cisco TAC (1 800 553-2447).
2.7.110 FC-NO-CREDITS
The Fibre Channel Distance Extension Credit Starvation alarm occurs on storage access networking
(SAN) Fibre Channel/Fiber Connectivity (FICON) FC_MR-4 cards when the congestion prevents the
generic framing procedure (GFP) transmitter from sending frames to the FC_MR-4 card port. For
example, the alarm can be raised when an operator configures a card to autodetect framing credits but
the card is not connected to an interoperable FC-SW-standards-based Fibre Channel/FICON port.
FC-NO-CREDITS is raised only if transmission is completely prevented. (If traffic is slowed but still
passing, this alarm is not raised.) The alarm is raised in conjunction with the GFP-NO-BUFFERS alarm.
For example, if the FC-NO-CREDITS alarm is generated at an FC_MR-4 data port, a
GFP-NO-BUFFERS alarm could be raised at the upstream remote FC_MR-4 data port.
Clear the FC-NO-CREDITS Alarm
If the port is connected to a Fibre Channel/FICON switch, make sure it is configured for interoperation
Step 1
mode using the manufacturer's instructions.
If the port is not connected to a switch, turn off Autodetect Credits:
Step 2
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
November 2009
Default Severity: Major (MJ), Service-Affecting (SA)
SONET Logical Object: FCMR
DWDM Logical Objects: FC, TRUNK
Double-click the FC_MR-4 card.
Click Provisioning > Port > General.
Under Admin State, click the cell and choose OOS,MT.
Click Apply.
Click the Provisioning > Port > Distance Extension tabs.
Uncheck the Autodetect Credits column check box.
Click Apply.
Click Provisioning > Port > General.
Under Admin State, click the cell and choose IS.
Click Apply.
Cisco ONS 15454 Troubleshooting Guide, R8.5
2.7.110 FC-NO-CREDITS
2-101
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