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Cisco Bug: CSCut18520 - Send Locally Known MAC Traffic on port with 'switchport block unicast'

Last Modified

May 18, 2016

Products (10)

  • Cisco Nexus 6000 Series Switches
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 6004 Switch
  • Cisco Nexus 5672UP Switch
  • Cisco Nexus 6001 Switch
  • Cisco Nexus 5696Q Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 56128P Switch
  • Cisco Nexus 5596T Switch

Known Affected Releases

7.0(3)N1(1)

Description (partial)

Symptom:
Traffic blackholed to port with locally known MAC address.

Conditions:
- Ingress FabricPath device does not have destination MAC address entry
- Egress FabricPath device has destination MAC address entry
- Egress CE port configured with 'switchport block unicast'
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
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