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MX2820 an explanation for why access modules are showing up as blank or unknown when service is working

MX2820 an explanation for why access modules are showing up as blank or unknown when service is working

Question:

Why do working equipped MX2820 Access Modules display as blank or unknown when existing service is up and working.

Answer:

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”.

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Revision #:
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Last update:
‎08-29-2019 10:30 AM
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