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Forum Discussion

Ajit's avatar
Ajit
Icon for Altostratus rankAltostratus
Mar 10, 2015

VIP not functioning on port 8083

I have a firewall sitting in our network before the F5 loadbalancer. We have natted a public IP to a private IP (137.x.x.x - 192.168.162.31). The private IP is then used on the F5 as a VIP address li...
application delivery
LTM
TMOS
TMSH
StephanManthey's avatar
StephanManthey
Icon for Nacreous rankNacreous
Mar 10, 2015

Hi Ajit,

did you configure SNAT AutoMap for your virtual server? Asymmetric traffic flow is a typical reason for failing communication.

A tcpdump to track incoming traffic including serverside traffic would look like this: 

tcpdump -nnni 0.0:nnnp -s 0 -e -c 1000 host 


-nnn
= no name/protocol resolution, 
-i 0.0
= dump on the internal interface, 
:nnnp
= dump the internal ethernet trailer data and peer traffic (serverside traffic), 
-s 0
= dump full packet including the ethernet trailer data, 
-c 1000
= limit the dump to 1.000 packets, 
host
= one of many possible filters,

Thanks, Stephan