For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

rmd1023's avatar
rmd1023
Icon for Nimbostratus rankNimbostratus
Mar 10, 2012

Monitoring traffic vs forwarding virtual server

So, I've got a pair of HA LTMs running in layer 3 mode. Most of my virtual servers are using SNAT so that the virtual server traffic flows through the LTM but the LTM isn't the default gateway for th...
management
monitoring
rmd1023's avatar
rmd1023
Icon for Nimbostratus rankNimbostratus
Mar 13, 2012
I have not, since I don't want it to proxy arp. But I wouldn't think it's a matter of responding to ARPs - it's a layer 3 device and routing is working happily, so things upstream are routing the packets to the outside IP of the LTM, and the LTM is picking up the packets.

 

 

If I ping the address from the LTM itself, it responds. If I ping the address from a host on that network, I see a reply. But if I ping the interface from a remote box upstream, I see the packets hitting the LTM's outside interface when I do a (non-promiscuous) tcpdump, but I never see a reply on any interface.