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New Member

ASA in transparent mode with 2 different VLANs but 1 subnet

Hi,

I have a question about ASA in transparent mode. Would it be possible to deploy ASA in transparent mode with 2 different VLANs but only 1 subnet as attached file? I would like to deploy like this because there are 2 core switches and also 2 server farm switches which is full mesh connected. So, it might be better if it is possible to use just 2 ASA instead of 4.

Please let me know if I misunderstood anything.

Thanks,

Nitass

2 REPLIES
Hall of Fame Super Blue

Re: ASA in transparent mode with 2 different VLANs but 1 subnet

Nitass

"Would it be possible to deploy ASA in transparent mode with 2 different VLANs but only 1 subnet as attached file?"

Yes, in fact that is the recommended way to deploy a transparent firewall. You need the same IP subnet because it is a L2 firewall not L3. But you have to use 2 vlans to avoid STP issues ie. if you only used 1 vlan you would get a L2 loop.

Jon

New Member

Re: ASA in transparent mode with 2 different VLANs but 1 subnet

Jon,

Thank you very much but I am so sorry I could not catch you. Have you had a look my diagram? Would you mind explaining me a little bit more?

Thanks,

Nitass

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