Forum Discussion
Marta_19201
Nimbostratus
NimbostratusSetting up a redudant pair without changing ip network
Hi everyone!
I am newbie here. I hope somebody can help me because I am getting crazy ;-)
We have a DMZ in our company which we cannot change the ip network when we set the LTM up to balance our traffic. After following the steps we found in the chapter 4 in the LTM:implementations manual, it works prefectly. But our problem starts when we also try to set a redundant pair of LTM in our system. We have several problems with the high availity, and although we can synchronize the two units, they do not work properly when we turn off the active unit of them (the traffic in the clients stops and the health monitors do not work)
Any idea??
- The_BhattmanGood Question. Can you describe how your physically hooking up the Active and Standby LTM's with the switches. Also how are the switche ports configured between the Active and Standby LTM's. Are they LACP or Port Channelled or simply configured on the same VLAN?
thanks
CB 
Marta_19201We are trying to reproduce the figure 4.2 in the Local Traffic Manager Implementations Manual :
https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/ltm_sol_guide_943/sol_vlans.html1062182
but with a redundant pair instead of just one LTM, although we are not sure how to configured the High Avaliabity because we have not seen any explample of this. The ports on the switches are simply configured in the same VLAN.- The_BhattmanOn the standby unit does the health monitors show green like the active unit? When you shut the active unit down does the health monitor go red?
- Marta_19201No, that's why I think we are not setting up the redudant pair right. There is not problem with the health monitors in the Active Unit but in the Standby one it turns into green or red without any reason although the nodes are up :-|
we have not tried yet to shut down the active unit, but when we switch it to standby, the health monitors turn red for a while, and again it turns sometimes into green and sometimes into red.
what is the reason of all of this?? - The_BhattmanSounds like there is a dozen different things that could be causing this (bug, configuration issue, etc) I would call F5 support.
CB
