I have One-arm configuration.
I can see bi-directional flows on CSS but client PC not receive anything, as I verified capturing packets.
When client PC request directly from the servers it receive content.
Also client PC receives ping reply from CSS and also stablishes telnet with CSS. Also when no servers are active, client PC receives tcp RST,ACK from CSS, so no Layer 3 problems exist.
I have attached "show run" and "show flows" outputs, plus "tcp SYN" packets that client PC sends to CSS.
Client IP address: 10.130.244.16
the flow is created with the first SYN.
We set the reverse flow anticipating the response.
That does not mean the CSS received it.
The problem is that your configured vlan is :
ip address 10.130.193.10 255.255.255.0
And your vip is x.x.192.x.
This is ok, but it means there is a router between the CSS and the servers.
So when the server responds to the client, the router will bypass the CSS.
You can keep the same vip, but you have to change your group config
add destination service SERVER1
add destination service SERVER2
vip address 10.130.193.70
Replace the x.x.192.x with a x.x.193.x