Preview Tool

Cisco Bug: CSCtf19467 - Traffic drop during reload of a different VDC

Last Modified

Feb 23, 2018

Products (12)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco MDS 9124 Multilayer Fabric Switch
  • Cisco MDS 9222i Multiservice Modular Switch
  • Cisco MDS 9216i Multilayer Fabric Switch
  • Cisco MDS 9509 Multilayer Director
  • Cisco MDS 9134 Multilayer Fabric Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco MDS 9506 Multilayer Director
  • Cisco MDS IBM Blade Switch
View all products in Bug Search Tool Login Required

Known Affected Releases


Description (partial)


During a reload of VDC 2,  VDC 3 stops forwarding traffic for about a second (one packet lost on the ping) while the reload starts and VDC 2 comes online. Ping goes through the nexus.

Issue happens if the VDCs share ports on the same R2D2 asic. 
Issue does not happen if the VDs do not share port on the R2D2 asic.

Related Community Discussions

VDC interface allocation for N7K-M148GS-11
I need to allocate two interfaces for a new VDC. According to a few documentations, including BRKDCT-2121 from this year's Networkers, there's no restriction in terms of having to reserve all ports in same port group, but it's highly recommended to reserve the entire block of 12 ports on N7K-M148GS-11. "*Note – The M1 48 port line cards have 4 port groups of 12 ports. Recommendation is to have all members of a port group in the same VDC" Can someone please tell me why it's recommended that way? What ...
Latest activity: Jul 30, 2012
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.