Corrective Action
NOTICE
Service-disruption hazard
A cold reset, reseat, or replacement of a card is service impacting if the card is currently
carrying services. To determine if any services are currently carried over a card, perform
the procedure “Reseating a Card” (p. 3-19).
If
there are services currently carried over the card, it may be best to wait for a
maintenance window before resetting, replacing, or reseating the card.
At the end of each step wait to see if the fault clears. If not, continue with the next step.
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1
Observe the protection information presented in the APSB condition. Note the protection
group information and the cards involved.
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2
Login to the near end NE and perform the procedure “Determining the Far End of a
Service” (p. 3-10) to determine the NE and card that link directly to the (near-end) card
reporting
the APSB alarm.
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3
Open a new window and log into the far-end NE identified in Step 2.
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4
Enter the following commands on both the near-end and far-end NEs to confirm that the
protection group is configured as desired.
CLI config aps group <group_id> detail
1. Ensure that the near-end and far-end interfaces are in the same protection group.
2. Check the directionality of the protection group.
3. Validate that the protection group has a valid working and protection path.
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5
Using the data obtained in Step 1 and Step 4, confirm that the working cards are paired up
and that the protection cards are paired up.
1. Confirm that the topology matches the programmed topology.
CLI show interface topology *
WEBUI Select Connections > Physical Topology.
Trouble-clearing procedures
APSB
APSB (APS protection switching byte failure)
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1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
2-37
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