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Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
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Chapter 2 Alarm Troubleshooting
Frequently Used Alarm Troubleshooting Procedures
Clear an External Switching Command on a Path Protection Span
Note If the ports terminating a span are configured as revertive, clearing a Force or Manual switch to protect
moves traffic back to the working port. If ports are not configured as nonrevertive, clearing a Force
switch to protect does not move traffic back.
Step 1 Log into a node on the network. If you are already logged in, continue with Step 2.
Step 2 Right-click a network span and choose Circuits.
The Circuits on Span dialog box shows the SNCP circuits, including circuit names, locations, and a color
code showing which circuits are active on the span.
Step 3 Initiate a Force switch for all circuits on the span:
a. Click the Perform Path Protection span switching field.
b. Choose Clear from the drop-down list.
c. Click Apply.
d. In the Confirm Path Protection Switch dialog box, click Yes .
e. In the Protection Switch Result dialog box, click OK.
In the Circuits on Span dialog box, the switch state for all circuits is Clear. Unprotected circuits do
not switch.
2.9.2 CTC Card Resetting and Switching
Caution Avoid soft resetting more than one ONS 15310-MA SDH card at a time. Instead, issue a soft reset
command for a single card, then wait until CTC shows the card is back up. You can then issue a soft reset
on another card if needed. Completing soft resets in sequence helps to avoid unexpected traffic hits.
Soft- or Hard-Reset an Ethernet or Electrical Card in CTC
Note The hard-reset option is enabled on CE-100T-8 and ML-100T-8 cards only when the card is placed in
the locked-enabledlocked-enabled service state.
Note Hard-resetting a traffic card causes a traffic hit in the ONS 15310-MA SDH. To preserve traffic flow,
perform a traffic switch in the “2.9.1 Protection Switching, Lock Initiation, and Clearing” section on
page 2-146 as appropriate.
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