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Cisco Bug: CSCun25245 - NLB mutlicast mac unicast IP duplicated by the CPU

Last Modified

Jun 04, 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(2a) 6.2(6)

Description (partial)

Packets with Unicast IP and Multicast MAC are being duplicated on the destination interface. which can cause performance issues to the application.

on using MS NLB Option 2: Static ARP + MAC-based L2 Multicast Lookups + Static Joins + IP Multicast MAC
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Bug Details Include

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