topic Re: FTD Transparent Mode (TRUNK) in Network Security

FTD Transparent Mode (TRUNK)

MarkNode17 — Tue, 12 Dec 2023 22:44:33 GMT

Scenario....

I have 2 switches (Switch A and Switch B), they are connected together via a TRUNK allowing vlan 10 and 20 to traverse between them. I want to insert an FTD between the switches in transparent mode. I'm having a heck of a time finding documentation or an example of how to do this when the switches are connected via a trunk. Doing this with a routed link between routers is easy and its also easy if the link between the switches was an access port with a single vlan, then I'd use a BVI. I've messed around with the configuration in FMC for hours and haven't been able to come up with anything that works. Anyone have any experience with this?

Any help would be greatly appreciated.

Thanks,

Mark

Re: FTD Transparent Mode (TRUNK)

MHM Cisco World — Wed, 13 Dec 2023 06:34:11 GMT

I will start one by one but It can work or it can not there is some limitations

But anyway let try

1-Device-> device management

Click edit (for your FTD)

Interface page will appear

There is switchport columns

Make slider enable.

2-the interface we make it switchport click edit

In edit physical interface

In general config your native and allow vlan

3- add vlan interface

4-config bridge group inlcude vlan interface

Hope this help you

Good luck

MHM

Re: FTD Transparent Mode (TRUNK)

M02@rt37 — Wed, 13 Dec 2023 07:34:04 GMT

Hello @MarkNode17

Check here:

https://rayka-co.com/lesson/cisco-ftd-transparent-mode/

Re: FTD Transparent Mode (TRUNK)

MarkNode17 — Fri, 05 Jan 2024 00:16:21 GMT

MHM, Thank you for your help. With you help I was able to get my issue resolved. Appreciate your help. 🙂

Re: FTD Transparent Mode (TRUNK)

MHM Cisco World — Sun, 07 Jan 2024 14:34:44 GMT

you are so welcome
MHM