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Cisco Bug: CSCut14236 - VxLAN: Approx 30s delay in VLAN going from suspended to active state

Last Modified

Mar 01, 2017

Products (7)

  • Cisco Nexus 3000 Series Switches
  • Cisco Nexus 3064 Switch
  • Cisco Nexus 3016 Switch
  • Cisco Nexus 3064-T Switch
  • Cisco Nexus 3048 Switch
  • Cisco Nexus 3132Q Switch
  • Cisco Nexus 3172 Switch

Known Affected Releases


Description (partial)

When configuring additional VLAN-VNI mappings on N3172 in VxLAN with VPC enviornment, for those VLANs which already running across VPC link, mapping those VLANs to the VN-segment will cause those VLANs being suspended from the VPC peers for about 50s, then those VLANs will join back to the VPC in active mode. This is significant delay comparing with Nexus 9396 in similar setup.

This is happening when adding existing VLANs on VPC (between leaf switch and downstream access switch) to the VLAN-VNI mapping:
N3172-1(config-vlan)# vlan 1600
N3172-1(config-vlan)#   vn-segment 11600
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