Guest

Preview Tool

Cisco Bug: CSCus56036 - BGP tracebacks or FD read errors along with session flaps

Last Modified

May 23, 2018

Products (1)

  • Cisco MDS 9000 NX-OS and SAN-OS Software

Known Affected Releases

6.2(10)E3 6.2(2) 7.0(3)I2(1)

Description (partial)

Symptom:
BGP session would continuosly flap with FD read error syslogs. fd Read error is the signature of this defect with varying error no :-

Switch %BGP-5-ADJCHANGE:  bgp-65111 [5639] (default) neighbor 10.x.x.x Down - fd read error

or

bgp 65111 [5639]: [5717]: (default) EVT: Read error from peer 10.x.x.x: No buffer space available

BGP tracebacks can be seen as well  but not necessary

Conditions:
Reload of chassis 

or

SSO 

or

Module Reload  

or

Interface flap
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.