Guest

Preview Tool

Cisco Bug: CSCvt60814 - PTP Sync packets dropped from IPN

Last Modified

Oct 03, 2020

Products (24)

  • Cisco Nexus 9000 Series Switches
  • Cisco Nexus 9516 Switch
  • Cisco Nexus 93108TC-FX Switch
  • Cisco Nexus 9396TX Switch
  • Cisco Nexus 9396PX Switch
  • Cisco Nexus 93120TX Switch
  • Cisco Nexus 93240YC-FX2 Switch
  • Cisco Nexus 9372TX-E Switch
  • Cisco Nexus 9332C Switch
  • Cisco Nexus 93108TC-EX Switch
View all products in Bug Search Tool Login Required

Known Affected Releases

14.2(3l)

Description (partial)

Symptom:
A port-facing interpod network gets the "Uncalibrated" status, and PTP packets are not seen as received on the spine switch.

Conditions:
This issue occurs under the following conditions:

- Multipod latency feature with PTP GM enabled in the interpod network. 
- GM running on IPN and spine switches that are connected to the interpod network BC expecting to negotiate PTP port state as Slave.
- PTP packets not seeing as received.
- PTP packets marked with DSCP 59.
- Interpod network devices that are acting as BC might set dscp 59 by default for PTP.
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.