Guest

Preview Tool

Cisco Bug: CSCuw55425 - EPG sclass incorrect when previously static on L3Out

Last Modified

Nov 27, 2018

Products (11)

  • Cisco Nexus 9000 Series Switches
  • Cisco Nexus 9516 Switch
  • Cisco Nexus 9396PX Switch
  • Cisco Nexus 9396TX Switch
  • Cisco Nexus 9504 Switch
  • Cisco Nexus 9332PQ Switch
  • Cisco Nexus 9508 Switch
  • Cisco Nexus 93128TX Switch
  • Cisco Nexus 9372PX Switch
  • Cisco Nexus 9336PQ ACI Spine Switch
View all products in Bug Search Tool Login Required

Known Affected Releases

11.1(1r)

Description (partial)

Symptom:
Traffic destined to an endpoint is incorrectly classified with an external EPG sclass.  As a result, the traffic does not match the expected filters and may be policy dropped.

Conditions:
If an endpoint is learned in a subnet that has a matching /32 external prefix configured in an external EPG, then the pctag (sclass) used for policy enforcement will be reassigned to the external EPG.  If the external prefix is then deleted, and the fabric host is active, hardware will continue to assign the fabric host the sclass of the external EPG.  
This is a misconfiguration.  /32 prefixes on external L3out's should not overlap with other subnets in the same VRF within the fabric.
Bug details contain sensitive information and therefore require a Cisco.com 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.