FCoE

FCoE

QLA - 

http://www.qlogic.com/OEMPartnerships/Dell/Documents/ds_QLE8152.pdf

Host Connectivity

• On QLogic CNAs, set the Link Down Timeout to 60 seconds (the default is 30 seconds) in the Advanced HBA Parameters. This is necessary to ensure proper recovery or failover if a link fails or becomes unresponsive.
  
  Switch Configuration
  
  
  fka-adv-period

  
  

  VFC down due to FIP keepalive misses

  The VFC goes down due to FIP keepalive misses.

  Possible Cause

  When FIP keepalives (FKA) are missed for a period of approximately 22 seconds, this means that approximately three FKAs are not continuously received from the host. Missed FKAs can occur for many reasons, including congestion or link issues.

  FKA timeout : 2.5 * FKA_adv_period.

  The FKA_adv_period is exchanged and agreed upon with the host as in the FIP advertisement when responding to a solicitation.

  Observe the output from the following commands to confirm FKA misses:

  •  show platform software fcoe_mgr info interface vfc <id>
  •  show platform software fcoe_mgr event-history errors
  •  show platform software fcoe_mgr event-history lock
  •  show platform software fcoe_mgr event-history msgs
  •  show platform fwm info pif ethernet <bound-ethernet-interface-id>

  Solution

  Sometimes when congestion is relieved, the VFC comes back up. If the symptom persists, then additional analysis is required. The possible considerations are:

  • The host stopped sending the FKA.
  • The switch dropped the FKA that was received.