Hello Community,
I am currently managing a Cisco FTD firewall in transparent mode via FMC, and I'm encountering a configuration challenge. Here are the details of my setup:
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Firewall: Cisco FTD in transparent mode, managed through FMC.
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Subnets in VLAN 1:
- 10.31.0.0/20
- 10.32.0.0/20
- 102.0.0.0/8
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Switch A: Connected to the firewall with servers that have NICs assigned to all three networks.
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Switches B and C: Connected devices that send data to the servers. Each device has its own individual network.
Problem: I want the data from Switches B and C to pass through the firewall. However, I can only assign one IP to the BVI on the firewall, which allows traffic from only one network to pass and blocks the other two networks.
Question: Is there a way to assign multiple IPs to a single BVI on the Cisco FTD firewall in transparent mode? If not, what would be the best practice to enable traffic from all three networks through the firewall?
Also I cannot change the VLAN ID as the switches B,C as they are in remote locations
Any insights or alternative configuration suggestions would be greatly appreciated.
Thank you!
