300-710 · Question #407
Which feature sets up multiple interfaces on a Cisco Secure Firewall Threat Defense to be on the same subnet?
The correct answer is C. BVI. A Bridge Virtual Interface (BVI) is used in transparent (Layer 2) firewall mode to logically group multiple physical interfaces into a single bridge group, allowing them to reside on the same IP subnet. The BVI acts as the management interface for the bridge group and is…
Question
Which feature sets up multiple interfaces on a Cisco Secure Firewall Threat Defense to be on the same subnet?
Options
- AEtherChannel
- BSVI
- CBVI
- Dsecurity levels
How the community answered
(32 responses)- A3% (1)
- C91% (29)
- D6% (2)
Explanation
A Bridge Virtual Interface (BVI) is used in transparent (Layer 2) firewall mode to logically group multiple physical interfaces into a single bridge group, allowing them to reside on the same IP subnet. The BVI acts as the management interface for the bridge group and is assigned the IP address that represents the bridge group on the network. EtherChannel (A) bundles links for redundancy/bandwidth but doesn't place interfaces on the same subnet at Layer 3. SVIs (B) are Switch Virtual Interfaces used on Layer 3 switches for inter-VLAN routing. Security levels (D) are an ASA/FTD concept for defining interface trust levels, not for subnet grouping.
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