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Forum Discussion

Wangzixuan_3147's avatar
Wangzixuan_3147
Icon for Nimbostratus rankNimbostratus
Feb 28, 2019

Ping the server on f5

Hello everyone, I would like to ask a question: the customer has a server with a route to the F5 management port address, but F5 does not have a route to the server, but can ping the f5 on the server...
application delivery
BIG-IP
Andy_McGrath's avatar
Andy_McGrath
Icon for Cumulonimbus rankCumulonimbus
Feb 28, 2019

Yes, the F5 has a feature named 

Auto Last Hop
where the F5 will send return traffic back to the MAC address it received a request on.

If this happens to be an gateway on the network that can route back to the server, guessing it is, then taffic will be returned.

You can disable 

Auto Last Hop
on each VLAN and/or device wide under 
System  ››  Configuration : Local Traffic : General

Each VLANs 

Auto Last Hop
by default is set to take the device wide configuration but can always override it so check each VLAN if you want it disabled.