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Forum Discussion

jessej1111_1443's avatar
jessej1111_1443
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Apr 16, 2014

all ip's in a subnet behind my F5 respond to ping even though I only have 4 devices active

Hello Everyone,   I was wondering if you could point out a likely configuration mistake. Currently I have an F5 that has a subnet behind it for virtual servers. The virtual servers that are curren...
Cory_50405's avatar
Cory_50405
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Apr 16, 2014

Can you elaborate a bit more about your environment and how clients reach assets in the subnet behind your BIG-IP? And more in general, how routing works in your environment? You mention being able to SSH to the devices behind the F5. Do these communications go through a virtual server on the BIG-IP?

 

Cory_50405's avatar
Cory_50405
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Apr 16, 2014
For the IP addresses in your real server range that are responding to ping despite there not being a real server with that IP address, what is the MAC address being seen in the pinging machine's ARP table for that address? Is the BIG-IP responding to the ARP requests, or is something else?