Which feature is supported by IRB on Cisco FTD devices?
Which feature is supported by IRB on Cisco FTD devices?
The feature supported by IRB (Integrated Routing and Bridging) on Cisco FTD (Firepower Threat Defense) devices is the redundant interface. Integrated Routing and Bridging enables devices to perform both routing and bridging functions simultaneously. While dynamic routing protocols involve routing and network topology calculations, they are separate from the core functionality of IRB, which focuses on integrating bridging and routing capabilities. Therefore, the option that directly aligns with IRB on Cisco FTD devices is the redundant interface.
Correct A https://www.cisco.com/c/en/us/td/docs/security/firepower/70/configuration/guide/fpmc-config-guide-v70/transparent_or_routed_firewall_mode_for_firepower_threat_defense.html#id_40010
people are believing too much in the chat-gpt
IRB is not the same as dynamic routing protocols. The first thing in cisco whitepaper regarding routed/transparent firewall and IRB is unsupported feautures, and the unsupported is etherchannel, Dynamic routing protocols.. so only A si the right one
A is correct. https://www.cisco.com/c/en/us/td/docs/security/firepower/640/configuration/guide/fpmc-config-guide-v64/transparent_or_routed_firewall_mode_for_firepower_threat_defense.html
There is another question: "What is a limitation to consider when running a dynamic routing protocol on a Cisco FTD device in IRB mode? " - Only nonbridge interfaces are supported. So I think, it means Dynamic routing protocol is supported in IRB but with limitatiion.
IRB stands for Integrated Routing and Bridging and is a feature that enables bridging between two or more VLANs and routing between these VLANs as well. Therefore, the feature supported by IRB on Cisco FTD devices is: C. dynamic routing protocol IRB is a layer 3 feature and supports dynamic routing protocols such as OSPF, BGP, and RIP. It allows a device to route between VLANs while still maintaining layer 2 connectivity within the VLAN. Redundant interfaces, high-availability clusters, and EtherChannel interfaces are not directly related to IRB.
IRB (Integrated Routing and Bridging) is a feature that allows a router to perform both routing and bridging functions on the same interface. On Cisco FTD (Firepower Threat Defense) devices, IRB is supported, and it allows the device to perform layer 2 bridging and layer 3 routing simultaneously. With IRB, the FTD device can bridge traffic between interfaces on the same VLAN or subnet while also routing traffic between different VLANs or subnets. This is useful in scenarios where both bridging and routing are required, such as in a firewall deployment where the FTD device needs to perform both functions to enforce security policies.