Implementing Cisco Application Centric Infrastructure (DCACI) — Question 344
A network engineer implements an L3Out inside the Cisco ACI fabric. The engineer plans to connect a Cisco ACI leaf switch to a switch outside of the Cisco ACI fabric to exchange routes via a routing protocol. The external switch interface is configured with IP address 192.168.15.1/30. The ACI engineer wants to use a routing protocol that uses a hierarchical network design. The Cisco ACI fabric should use the L3Out to access the Internet. Which set of steps must be taken to meet these requirements?
Answer options
- A. Set up the BGP Protocol policy with the appropriate Autonomous System number. Create the Routed Outside object and Node profile, selecting BGP as the routing protocol. Build the Interface profile, selecting SVI and the appropriate VPC. Configure the 0.0.0.0/32 network as part of the External Network object.
- B. Set up the EIGRP Protocol policy with the selected Autonomous System number. Set up the Routed External Network object and Node profile, selecting EIGRP. Create the Switch profile, selecting VPC and the appropriate interfaces. Create the default network and associate it with the Routed Outside object.
- C. Set up the EIGRP Protocol policy with the selected Autonomous System number. Configure an Interface policy and an External Bridged Domain. Create an External Bridged Network using the configured VLAN pool. Build the Leaf profile, selecting Routed Sub-Interface and the appropriate VLAN.
- D. Configure the OSPF Protocol policy with an area of 0. Create the Routed Outside object and Node profile, selecting OSPF as the routing protocol. Build the Interface profiles, selecting Routed Interface and the appropriate interface. Set up the External Network object with a network of 0.0.0.0/0.
Correct answer: D
Explanation
The correct answer is D because OSPF is a hierarchical routing protocol that fits the requirements for the ACI fabric's connection to the Internet. The other options suggest using BGP or EIGRP, which do not align with the need for OSPF in this scenario. Additionally, option D correctly includes creating the External Network object with the default route of 0.0.0.0/0, essential for Internet access.