For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

Verizon_75165's avatar
Verizon_75165
Icon for Nimbostratus rankNimbostratus
Jun 16, 2014

F5 LTM Interface flapping

The LTM interface keeps flapping.   This caused the LB to keep failover between active and standby status.   Unable to find the reason. Any suggestions or advise plz ?  
application delivery
availability
LTM
management
PeteWhite's avatar
PeteWhite
Icon for Employee rankEmployee
Jun 17, 2014

Are you using network failover or serial cable?

 

If network then you should check the network cable and change it preferably. It is best practise to use two physical interfaces directly cabled between the two devices, in an LACP trunk. Use a single self-IP, configured for Default Port Lockdown. If you can, upgrade the software to at least 10.2.4. Bear in mind that serial failover does not work after v11.