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Cisco Bug: CSCvv50753 - Data traffic is detecting as "L2 on L3 ingress unknown protocol" and dropping

Last Modified

Sep 17, 2020

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases


Description (partial)

All data traffic detecting as "L2 on L3 ingress unknown protocol". and dropping

It's a corner case, and very difficult to repro

Repro steps   
  -  P2MP setup
  -  Have a clean/no macsec and make sure ping working
  -  Bring up Macses session and will see the issue
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Bug Details Include

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  • Status
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  • Known Fixed Releases
  • Related Community Discussions
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