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Daniel_55334's avatar
Daniel_55334
Icon for Altostratus rankAltostratus
Apr 08, 2008

LTM network failover

From the manual I got that LTM can use network to determine if the active unit is working fine if network failover is enabled. And for synchronization it is recommended that a separate segment is used...
config
design
johns's avatar
johns
Icon for Employee rankEmployee
Apr 09, 2008
VLAN Failsafe and the failover between the units are 2 separate events. VLAN Failsafe causes the failover to take place by creating the condition which failover is initiated. VLAN failsafe in itself does not include a feature to "tell" the standby unit to become active.

 

 

1. VLAN Failsafe kicks in due to lack of traffic.

 

2. VLAN failsafe causes reboot/restart/failover (This is where VLAN Failsafe is done)

 

3. heartbeat message being sent on TCP 1028 from the Active unit stops due to action No. 2 above

 

4. Standby unit becomes active.