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A "%DBUS-3-DBUSINTERRSWSET" error message appears in the log
The issue is caused by a Versatile Interface Processor (VIP) crash. The processor is reset and is not used until the next Online Insertion and Removal (OIR) event or microcode download. It is retested at that time.
If a parity error is indicated and the card recovers, a primary cache or Processor Memory Parity Error (PMPE) can be a transient error. If this is the first instance of a PMPE, you can usually safely ignore it. However, if the same VIP experiences a second PMPE, replace the VIP.
At times, replacing the DRAM can also resolve the issue.
If the error occurs again, or the VIP document indicates a separate hardware issue, replace the VIP.
When hardware replacement is indicated, choose from one of these options:
If you have a hardware support contract directly with Cisco for this part, use the Service Order Submit Tool to request a replacement part directly.
For warranty service, contact the Cisco Technical Assistance Center (TAC) directly at 1-800-553-2447, or online by using the TAC Service Request Tool.
If your product is not covered by contract or warranty, contact your Cisco partner or reseller to request a replacement part for the hardware component that is causing the issue.