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Cisco Bug: CSCut67131 - ACL_Deny misprogrammed on F1 when creating a new VDC

Last Modified

Apr 11, 2018

Products (7)

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

Known Affected Releases


Description (partial)

On a switch with multiple VDCs having VPC domains, during the bringup of peer-link on an alternate VDC,  if any the VPC legs of the local VDC consist of the first ports of F1 modules, broadcast packets may loop across VPC peers via this VPC port.

Only seen on a Nexus 7000 switch using F1 Linecards running 6.2.x. The switch must consist of multiple VDCs with VPC configured. The first ports of the F1 modules should be members of the VPC legs of 1 VDC. The alternate VDC's VPCs should have VPC with member ports distributed across other F1 modules and the affected F1 module.
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