Preview Tool

Cisco Bug: CSCvt00941 - [CUPS]Port flapping occurred continuously on SF node

Last Modified

Sep 17, 2020

Products (2)

  • Cisco ASR 5000 Series
  • Cisco ASR 5500

Known Affected Releases

21.12.16 21.16.4 21.16.6 21.16.c7.74145 21.17.9 21.19.5 21.19.n3 21.20.0 21.20.2

Description (partial)

Repeated occurrences of following npumgr error log:
2020-Dec-23+14:45:15.291 [npumgr-port 166001 error] [5/0/10702 <npumgr:50> _vnpu_handler.c:1510]  [software internal system syslog] Ignoring iftask request 0x800d (present 1).

Repeated occurrences of following log on affected card's console:
2019-Dec-23+14:51:44.790 card 5-cpu0: IFTASK ipc thread congestion

Repeated occurrences of following log in iftask logs (single digit expiration counts are not an indication):
Tue May 26 09:04:00 2020 PID:7498 APP: Utility timerfd read returned 21 expirations.

Repeated occurrences of following log in host node dmesg:
Dec 22 13:19:20 tysCSsv01104-cp01 kernel: i40e 0000:5e:00.0: Unable to send the message to VF 15 aq_err 12

Problem occurs on VPC-DI/SI systems configured with XL710 NICs.
Trigger condition(s) are unknown.
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.