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S-Series Log Reports OSPF Duplicate Router ID

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TitleS-Series Log Reports OSPF Duplicate Router ID
Symptoms
  • S-Series Log Reports OSPF Duplicate Router ID
  • No apparent malfunction in network traffic
Environment
  • S-Series
  • OSPF
  • Loopback Address Configured
  • Spanning Tree Disabled
Cause
Spanning Tree
Resolution
Traffic was reflected due to loopback cable/device.  Once removed, all duplicate traffic had ceased.
Additional notes

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