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07-26-2013 08:02 AM
I am very new to the PANOS world so I will apologize in advance if this is obvious, however my search of documentation and knowledebase did not yield anything. I have been looking for a way to administratively shut down sub interfaces. Is this possible? While it's easy enough to shutdown a physical interface by assigning it's link-state we're not seeing a way to do the same for an individual sub-interface.
07-26-2013 08:15 AM
Hi Scourge,
We do not have an option of shutting down a sub interface as its logical in nature. We could however, select "none" zone for the sub-interface or "none" virtual router or both, if you do not want traffic to ingress/egress via this sub interface.
Hope this helps
BR,
Karthik
07-26-2013 08:29 AM
It's a very useful feature when you are replacing existing equipment for example. The ability to disable a subinteterface would allow you to assign and commit an ip address that would potentially conflict with an existing piece of equipment. When you're ready to cut over you can just disable the interfaces on the old equipment and enable them on the PA firewall. This is why there's a concept of administrative shutdown in the cisco world for example.
07-26-2013 09:22 AM
You have a valid point, but we do not have that feature as of today on the box. You can contact your Sales Engineer for this enhancement request and he can apply one for you on your behalf. Till then you have to work around it with the steps that I mentioned before.
BR,
Karthik
07-26-2013 11:39 AM
Thanks. I appreciate your feedback!
03-17-2021 11:55 PM
Has there been any advance on this?
Last message was 2013.
Moreover if I use the work around and set my subinterface into Zone = None, change the VR:
Will the interface still respond to packets?
E.g. ARP, ping etc?
I am replacing old FW with new Palo and I need to be sure even with above measures taken that there will be no effect of duplicating the existing live interface
Thanks for any reply
11-04-2021 04:07 AM
I'm facing the same situation right now. I want to replace the old FWs with the new Palo Alto FWs. So, I need to disable an exiting sub-interface on the old FWs and enable it on the new FWs. Select "none" for the sub-interface zone or "none" for the virtual router, or both it will take time for me. So, shutdown sub interfaces would make it easy.
11-04-2021 10:13 AM - edited 11-04-2021 10:15 AM
Same here - I was going to hot-cut a 3-tier infrastructure into one cluster but I just got told yesterday I need to do it one tier at a time. I guess the zone workaround is about the same amount of but I don't feel comfortable with the zone option. I guess I'm old school, lol.
Edit: What about duplicate IP addresses? Does the zone workaround completely take it out of routing & ARP'ing? Since I'm moving multiple VLANs' gateways from one firewall to another there's the potential for IP address conflicts.
11-27-2021 06:21 PM
FYI, I mentioned this to a support engineer and he said just remove the IP address and leave the zone & VR alone.
07-25-2022 05:03 AM
I have found the only simple option to remove the VLAN assignment from the trunk on the switch side.
09-07-2023 09:25 AM
Neither solutions work for me on Panorama 10.2.4-h4 & PA-460 with Pan-OS 10.2.3 -0 the FW doesn't accept the sub0interface without IP, VR or Zone...
we told the customer to @kprakash 's idea - waiting on results
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