Cisco NCS 2000 series Troubleshooting Manual page 321

Alarm Troubleshooting
7.
8.
9.
10.
11.
12. If the alarm does not clear, complete the
DETAILED STEPS
Step 1 Check for any upstream equipment failures that could cause the ESCON LOS alarm in this node.
Step 2
If there is no cause upstream, verify cabling continuity from the transmitting port to the receiving port reporting this
LOS. To verify cable continuity, follow site practices.
Always use the supplied electrostatic discharge wristband when working with a powered NCS system. Plug
Caution
the wristband cable into the ESD jack located on the lower-right edge of the shelf assembly.
Step 3 If the continuity is good, clean the fiber according to site practice. If none exists, complete the fiber-cleaning procedure
in the Maintain the Node chapter in the Configuration guide.
Step 4 Ensure that the PPM (SFP) is correctly configured for this payload:
a) In node view (single-shelf mode) or shelf view (multishelf mode), double-click the card to open the card view.
b) Click the Provisioning > Pluggable Port Modules tabs.
c) Check the Pluggable Port Modules area for the PPM (SFP) associated with the port.
d) In the Pluggable Ports area, ensure that the rate for the errored PPM (SFP) is ESCON.
Note
Step 5 If the physical cabling and PPM (SFP) are good but the alarm does not clear, verify that the correct port is actually in
service:
a) Confirm that the LED is correctly lit on the physical TXP card.
A green ACT/SBY LED indicates an active card. An amber ACT/SBY LED indicates a standby card.
b) To determine whether the port is in service, double-click the card in CTC to open the card view.
c) Click the Provisioning > Line tabs.
d) Verify that the Admin State column lists the port as IS, or (Unlocked).
e) If the Admin State column lists the port as OOS,MT (or Locked,maintenance) or OOS,DSBLD (or Locked,disabled),
click the column and choose IS or Unlocked. Click Apply.
Step 6
If the correct port is in service but the alarm has not cleared, use an optical test set to confirm that a valid signal exists
on the line. For specific procedures to use the test set equipment, consult the manufacturer. Test the line as close to the
receiving card as possible.
If the signal is valid, ensure that the transmit and receive outputs from the patch panel to your equipment
are properly connected. For more information about fiber connections and terminations, refer to the
Turn Up a Node chapter in the Configuration guide.
If a valid signal exists but the alarm does not clear, replace the cable connector on the NCS system.
Repeat Steps Step 2, on page 275
the LOS (ESCON).
If the alarm does not clear, the cabling could still be faulty despite correct attachments. Use the test set
to locate the bad cable and replace it using the procedures in the Configuration guide.
If the alarm does not clear, look for any card-level alarm that could cause this port alarm.
reporting card.
For information about provisioning PPMs (SFPs), refer to the Turn Up a Node chapter in the Configuration
guide. PPM (SFP) specifications are listed in the the
Modules in Cisco ONS PlatformsInstalling the GBIC, SFP, SFP+, QSFP, XFP, CXP, CFP and CPAK
Optical Modules in Cisco NCS Platforms
through Step 6, on page 275
Physically Replace a Card, on page 453
Installing the GBIC, SFP, SFP+, and XFP Optical
document.
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
Clear the LOS (ESCON) Alarm
for any other port on the card that reports
procedure for the
275