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merikatori_9296's avatar
merikatori_9296
Icon for Nimbostratus rankNimbostratus
Nov 01, 2011

[Newbie] Question about HA pair in real word

Hi all!     I am going to deploy F5 Big IP systems including 2 LTMs (v10) in real world. Everything is fine with LTM VE on VMware when using active/standby with network failover method and VLAN ...
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virtualization
Laudec_55181's avatar
Laudec_55181
Icon for Altostratus rankAltostratus
Nov 19, 2011
Hi,

 

 

It is always recommended to deploy the failover cable, with network failover, and have VLAN fail-safe as a trigger for failover. If the two devices are going to be physically further than 50ft apart, then you cannot use the failover cable, then you only use network failover, for failover.

 

 

When you configure VLAN fail-safe, the active device will listen for traffic coming from the configured VLANs. If no traffic is coming from those VLANs, it will generate traffic..if it still has no response, it will initiate fail-over.

 

 

The serial cable is a voltage check only. Nothing elses runs over it. Same as with network failover, it is a network pulse only.

 

 

Regards,