CoreXL and Loopback

[Robert_Pierce]

Hi There,

For lab test I should assign a Loopback interface into the only one CPU using CoreXL. I've created loopback interface loop00 and I have 4 CPU. I've enabled all 4 CPU using cpconfig and coreXL, but when i trying to assign CPU 3 to loopback interface I'm getting the error "Interface is invalid. Check that the interface loop00 is active physical interface". I've run the following CLI   "fw ctl affinity -s -i loop00 CPU_ID 3". What's wrong I do or I can only assign CPU for a physical interface? 

[PhoneBoy]

Pretty sure you cannot assign a core to a loopback interface, only physical ones.

[Robert_Pierce]

Logical you correct but I didn't find any clear documentation or line that it says only for physical interfaces. Maybe somebody can send me a link?

[PhoneBoy]

The error message pretty clearly says only active, physical interfaces are supported.
A loopback interface is NOT a physical interface.
The Secure Network Distributor only handles traffic entering network interface cards (NICs), as noted in the ATRG: https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solut...

It still begs the question: why you want to assign a core to a loopback interface?