topic Re: Firepower 4140 Chassis Port Channel help in Network Security

Firepower 4140 Chassis Port Channel help

ChristopherCraddock66504 — Thu, 28 Jan 2021 16:54:16 GMT

Dear Community,

I am attempting to create a couple of port channels on my 4140 appliances. I tried to do this through the FMC but it appears I may need to do it via the Chassis Manager? I am trying to create the port channels via the Chassis Manager, it gives me the option to create the port channel but I am unable to add any interfaces to the port channel. The section where to select the interfaces to put into the port channel simply does not provide any options, its blank. I have attached a screen shot. Any ideas?

Thank you.

Re: Firepower 4140 Chassis Port Channel help

ChristopherCraddock66504 — Thu, 28 Jan 2021 17:01:03 GMT

Dear Community,

I answered my own question. I had already assigned the physical interfaces to the logical device. I went ahead and unassigned the interfaces from the logical device and the Chassis Manager then presented the interfaces as an option.

Thank you.

Re: Firepower 4140 Chassis Port Channel help

Marvin Rhoads — Thu, 28 Jan 2021 17:33:05 GMT

Correct.

For future seekers, here is the relevant section of the configuration guide:

https://www.cisco.com/c/en/us/td/docs/security/firepower/fxos/fxos291/web-guide/b_GUI_FXOS_ConfigGuide_291/interface_management.html#task_DF7E8BE1B9EC4876AC65D09461E0C747

Re: Firepower 4140 Chassis Port Channel help

ChristopherCraddock66504 — Fri, 29 Jan 2021 17:21:20 GMT

Thank you Marvin. I did have one quick questions about the port channeling. I went ahead and disassociated the individual interfaces from the Logical device and then created the port channels (Eth1/1 and Eth1/2 -> PO15, Eth1/3 and Eth1/4 -> PO20). I then associated the PC's to the logical device. When I look at the CLI and the "show interface" command, I do see the PC's are assigned but the individual interfaces show saying "(not associated with Supervisor)". Is this normal? I attached a screenshot for reference.

Thank you.

Re: Firepower 4140 Chassis Port Channel help

Marvin Rhoads — Fri, 29 Jan 2021 18:35:32 GMT

Yes that's normal. It's a bit counter-intuitive but it's an artifact of how the Firepower Chassis Manager does things on 4100 and 9300 series.

Re: Firepower 4140 Chassis Port Channel help

ChristopherCraddock66504 — Fri, 29 Jan 2021 18:44:49 GMT

Thanks so much Marvin! As always, youre super helpful!