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300-710 · Question #267

When a Cisco FTD device is configured in transparent firewall mode, on which two interface types can an IP address be configured? (Choose two.)

The correct answer is A. Diagnostic C. BVI. In Cisco FTD transparent firewall mode, IP addresses can be configured on the Diagnostic interface for out-of-band management and on the Bridge Virtual Interface (BVI) for Layer 3 processing within a bridge group.

Configuration

Question

When a Cisco FTD device is configured in transparent firewall mode, on which two interface types can an IP address be configured? (Choose two.)

Options

  • ADiagnostic
  • BEtherChannel
  • CBVI
  • DPhysical
  • ESubinterface

How the community answered

(35 responses)
  • A
    89% (31)
  • B
    3% (1)
  • D
    3% (1)
  • E
    6% (2)

Why each option

In Cisco FTD transparent firewall mode, IP addresses can be configured on the Diagnostic interface for out-of-band management and on the Bridge Virtual Interface (BVI) for Layer 3 processing within a bridge group.

ADiagnosticCorrect

The Diagnostic interface always operates as a Layer 3 routed interface regardless of the FTD's operating mode, making it suitable for out-of-band management and requiring an IP address even in transparent mode.

BEtherChannel

EtherChannel interfaces, when part of a bridge group in transparent mode, operate at Layer 2 and do not directly have IP addresses assigned.

CBVICorrect

The Bridge Virtual Interface (BVI) is a logical Layer 3 interface associated with a bridge group in transparent mode, requiring an IP address for management access to the device and for Layer 3 operations for traffic within the bridged segments.

DPhysical

Physical interfaces, when assigned to a bridge group in transparent mode, operate at Layer 2 and do not directly receive an IP address.

ESubinterface

Subinterfaces on physical interfaces, when operating in transparent mode, are also typically assigned to bridge groups at Layer 2 without direct IP addresses.

Concept tested: Cisco FTD transparent mode interface IP addressing

Source: https://www.cisco.com/c/en/us/td/docs/security/firepower/70/configuration/guide/fpmc-config-guide-70/configure_interface_settings.html

Topics

#FTD Transparent Mode#Interface Configuration#BVI#Diagnostic Interface

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