Why do working equipped MX2820 Access Modules display as blank or unknown when existing service is up and working.
This is a backplane communications bus issue that doesn’t affect working service. This a known condition that typically manifests itself when the last two mated slots are equipped with Access Modules
- Slots 6 & 7 in a 19 inch chassis
- Slots 8 & 9 in a 23 inch chassis
The resolution is to update the SCU Module’s software to F05. We also recommend updating the Access Module’s software to the latest released software as well.
- M13 Mux Module software F05.
- STS-1 Mux Module software C03.
If software update doesn’t resolve the issue, it’s possible one or more Access Modules are causing the condition aka “Killer Unit”.