Forum Discussion
bakterja_171057
Nimbostratus
Jun 20, 2016Usually if there would be an issue with communication channel you would end with Active-Active state - not a Standby-Standby.
- step 7 - check if network failover checkbox is marked
- verify if your device-group includes both devices (on the left side)
- check /var/log/ltm for high availability status. Look for "Active" and "Standby" messages
You can try to reset trust and setup HA again as per: https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/tmos-implementations-11-5-0/2.html
- Chris_Reid_1643Jun 21, 2016
Nimbostratus
I've looked over this documentation in the past. However, our current setup does't have an external VLAN because the F5 is used for internal purposes only. Additionally, I don't currently have an internal VLAN configured because I will be migrating settings into this F5 implementation. Can I still use this documentation to configure high-availability? - Jankes_162915Jun 21, 2016
Nimbostratus
Sure, you don't need internal and external vlans - these are used to process actual clients and server traffic. For HA you need only single vlan to pass HA traffic. For pure failover you can use management interface/network. However for config-sync you will need didicated vlan. **This indeed looks like vlan failsafe behaviour like Odaah said. You can double check that: https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/tmos-concepts-11-5-0/19.html