Goal

 To address the case seen where an enclosure switch inserted into a interconnect slot on a c700 enclosure does not power up but the switch powers up in a different slot.

Solution

In this Document

A prior switch in the bay 3 was determined to be defective and replaced. However when the replacement switch was inserted it did not power up. The replacement switch powered up fine in a separate interconnect slot.

On examining the "show all" output from the active OA we saw the following error associated with the slot.

"E-fuse blown on Interconnect 3. Device cannot be powered on"

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We have consulted with HP and we have a recommendation which we have also tested in our lab.
HP indicated that the steps I'm about to provide will not affect the servers during the procedure. The servers that are up and running will stay up and running and will not be affected by this procedure.
We tested this in our lab and there was indeed no effect on the servers.

The idea behind the steps is that the error seen is related to the switch but since the switch was replaced and it was confirmed that the new switch was able to power up in a different slot then this may be old data in the internals of the system that needs to be cleared out.

Although we do not expect any affect on the servers we would still recommend that the below steps be done in a maintenance window for a production site.

Here are the steps:

As part of the steps you can monitor alarms on the DSR node before and after the steps. No new alarms are expected.

Step 1. Physically remove the standby OA server from its slot

Step 2. Physically remove the active OA server from its slot.

Note: This will of course cause a loss of connectivity to the OA. You will also see some flashing warning orange lights and hear some alarm sounds. This is as expected.

Step 3. Pull the OA Sleeve out partially (Pull the OA Sleeve, its directly below the OAs, halfway out. It only needs to be pulled out enough to break the connection with the backplane. It does not need to be remove completed.)

Step 4. Let both OAs and the Sleeve stay out for 10 minutes.

Step 5. After 10 minutes, replace the OA Sleeve, then the Active OA then the Standby OA.
(At this point the flashing lights and alarm sounds should stop.)

Step 6. Wait 2 minutes then log back in to the OA to ensure connectivity is restored.

At this point you can attempt to place the switch back into interconnect bay 3 and determine if it is able to power up.

Created from <SR 3-15558198851>

Applies to:

Oracle Communications Diameter Signaling Router (DSR) - Version DSR 5.1 and later
1-914CU

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