How to see the flow of particular traffic coming to vlan or selfIP?

Hi Guys,

 

I was configuring Ipsec VPN between F5 BigIP(LTM/AFM) and a third party device.Configured a forwarding virtual server (0.0.0.0/0.0.0.0) and enabled it on an internal vlan. default route is ISP pool.configuredIKE peer, IPsec Policy and traffic selecter.we failed to establish the connection. I can't see any hit in forwarding virtual server. there is no any connection details in traffic selecter.I can see icmp traffic is coming to internal vlan(interface) when doing tcp dump. How can I see what is happening for that traffic after that? any commands to capture traffic flow?

 

Nelgin.