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Angelo_Turetta1's avatar
Angelo_Turetta1
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Mar 02, 2015

Subnet as Virtual Server destination

I'd like to distribute connections to a virtual server among two adjacent IP addresses. If I try using destination 172.18.119.42:80 mask 255.255.255.254 The virtual server doesn't reply nei...
application delivery
LTM
management
TMOS
Angelo_Turetta1's avatar
Angelo_Turetta1
Icon for Nimbostratus rankNimbostratus
Mar 02, 2015

Version is 11.5.1HF7

 

The state is green, and it correctly show 172.18.119.42/31 as destination, but it doesn't reply to TCP SYN

 

I also added static routing from the router to the floating SELF_IP for those two IPs, just in case it was not answering ARP.

 

No difference.

 

Angelo_Turetta1's avatar
Angelo_Turetta1
Icon for Nimbostratus rankNimbostratus
Mar 02, 2015
it's physical. BTW, in the meantime I solved my problem. I learned some things. IPs used as a destination of type 'network' (so, non /32) are not reachable by ARP. You have to use L3 routing to reach your F5. My problem was the docs where I got my cluster's floating IP: it was wrong, so I was essentially routing my virtual server's IPs to a black-hole :-) After a few useful tcpdump(1) sessions, I corrected my static route and everything started working... I also fixed the docs ;-) Thanks anyway for your answers, Angelo.