Self-IP and VS is not pingable

10.60.252.4 is LTM's self IP. 10.60.252.6 is a server on the same VLAN. So it looks like you're trying to ping from LTM to the server IP address. The server is ARPing for the LTM self IP addresses MAC address, but it's coming in an unexpected VLAN. LTM won't have much control over which VLANs traffic comes into it on. I'm not even sure how you could set up the server interfaces to broadcast on a different interface than the destination IP address is on when the source host has an IP address on that interface. I'd check the lower layers on the server.

 

 

I noticed that the F5 Self IP and Floating IP Addresses never respond to ICMP when our monitoring team attempted to use these as F5 Health Checks.

 

 

This is a security "feature":

 

 

SOL3475: It is not possible to ping a BIG-IP self IP address from a separate VLAN

 

https://support.f5.com/kb/en-us/solutions/public/3000/400/sol3475.html

 

 

SOL7171: The standby BIG-IP system is unable to ping the floating self IP address

 

https://support.f5.com/kb/en-us/solutions/public/7000/100/sol7171.html

 

In BIG-IP versions 9.0 through 9.3.1, the standby BIG-IP system cannot ping the floating self IP addresses; this is the expected behavior.

 

 

Aaron