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Cisco Bug: CSCuo62938 - fabricpath: LID for l3 control mcast packets uses 0x10e5 instead 0xffff

Last Modified

Feb 14, 2018

Products (8)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7700 6-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7700 18-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch
  • Cisco Nexus 7700 10-Slot Switch

Known Affected Releases

6.2(6a)

Description (partial)

Symptom:
Networks with N7k gateway devices running software versions between 6.2.2 and 6.2.8 using F1 M1 with Fabricpath may have other N7k nodes notice persistent mac moves. 
The continuous mac moves further cause high CPU usage which lead to other problems for the control and data plane.
The gateway macs will change their association between the gateway device's local switchID.0.SUP Lid and gateway device's local switchID.0.ffff

Conditions:
To be affected by this issue:
[1] N7k Gateway devices must be using F1 M1 with Fabricpath
[2] N7k leaf devices must be using F1 or F1 with M1
[3] Gateway devices must be running s/w versions between 6.2.2 and 6.2.8
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Bug Details Include

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