Forum Discussion

N_67263's avatar
N_67263
Icon for Nimbostratus rankNimbostratus
Jan 05, 2014

F5 failover related suggestions/best practices.

Folks,   I came across a setup with 2 core switches and F5 boxes connected to each of these core switch in a active/standby mode. i.e. Active F5 connected to Core-01 and Standby F5 connected to Co...
management
nitass_89166's avatar
nitass_89166
Icon for Noctilucent rankNoctilucent

Recently this setup came across an outage where Core-01 switch went down and this was hosting the active F5 box.

 

The standby F5 did not take over during this scenario. I seen that in this setup the Active and Standby F5 were connected to each other with and HA link directly connected and this could be the reason. Is my understanding correct?

 

if you want f5 to failover when interface is down or vlan has no traffic, you have to configure ha group or vlan failsafe.

 

ha group

 

http://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/tmos-concepts-11-1-0/tmos_high_avail.html

 

sol13297: Overview of VLAN failsafe (10.x - 11.x)

 

http://support.f5.com/kb/en-us/solutions/public/13000/200/sol13297.html

 

N_67263's avatar
N_67263
Icon for Nimbostratus rankNimbostratus
Jan 06, 2014
Hi Nitass, one of my F5 pair has this option configured but it still did not failover. This is interesting, is there any reason we can think of? Regards, Nik