Forum Discussion

Chandru_14793's avatar
Chandru_14793
Icon for Nimbostratus rankNimbostratus
Jan 25, 2011

F5 High Availablity

Hi,     Currently we have F5 unit1 to be in active mode and unit 2 be in standby mode     We have seen when the active unit fails and standby unit becomes active and whenever the active un...
management
monitoring
JRahm's avatar
JRahm
Icon for Admin rankAdmin
Jan 26, 2011
Posted By Chris Miller on 01/26/2011 06:56 AM

 

Posted By Jason Rahm on 01/26/2011 03:58 AM

 

I think he's saying that the active unit comes back online, not back as active. In this case, if the traffic had already been failed over to the other unit and working fine, it shouldn't be an arp problem as the formerly active unit will (should) not be responding to the virtual arp requests. It could be a stp problem, but only if you have the ports the LTM connects to configured as network ports instead of host ports. These should always be host ports unless you're using vlan groups. And if not, no reason to have stp enabled.

 

He's using preferred redundancy state though. If the active unit comes back, the standby unit will return to standby and is not going to answer any requests.

 

ah, missed that part. Carry on. Nothing to see here.