Cause: The unit’s pairing list is full (max 8 devices for Top models).
Fix: Perform a factory reset by pressing the recessed button near the serial number label for 10 seconds. The LED will flash blue three times.
Without specific details about what "3555 top" refers to (a product, a model, a specific issue), here are a few possible interpretations:
In a multi-device CDP stack, role assignment is everything. Here’s why the "Top" unit with serial 3555 demands special attention: cdp bt serial number 3555 top
| Feature | Top Unit (Serial 3555) | Bottom/Slave Units | | :--- | :--- | :--- | | Configuration Authority | Stores master config file | Syncs from Top unit | | Firmware Update Priority | Updated first | Updated via Top unit | | Alarm Reporting | Aggregates all alarms | Reports to Top unit | | Replacement Complexity | High (requires full reprogramming) | Low (auto-configured by Top) | | Serial Number Visibility | Visible in network scans | Hidden behind Top unit |
Key takeaway: If you have a "cdp bt serial number 3555 top" device failure, your entire network segment may go offline. Slave units can sometimes be repurposed as a temporary Top, but serial 3555 is factory-calibrated for this role. Cause: The unit’s pairing list is full (max
If you’re on a Linux system with network inventory data and want to find the top process/device by CPU with serial 3555:
top -b -n 1 | grep 3555 | head -n 1
Or for a device log:
grep -r "serial.*3555" /var/log/ | head -n 1
If you must replace a failed "cdp bt serial number 3555 top" with a different used unit (e.g., a bottom unit or a different serial), follow this migration:
If you’re on a Cisco switch/router and want to locate a directly connected Cisco device with a specific serial number: Or for a device log: grep -r "serial
Not all CDP BT units are created equal. The "3555 Top" models are distinguished by: