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Exam 300-620 topic 1 question 87 discussion

Actual exam question from Cisco's 300-620
Question #: 87
Topic #: 1
[All 300-620 Questions]

A network engineer must design a method to allow the Cisco ACI to redirect traffic to the firewalls. Only traffic that matches specific L4-L7 policy rules should be redirected. The load must be distributed across multiple firewalls to scale the performance horizontally. Which action must be taken to meet these requirements?

  • A. Configure ACI Service Graph with Unidirectional PBR.
  • B. Implement ACI Service Graph with GIPo.
  • C. Implement ACI Service Graph Two Nodes with GIPo.
  • D. Configure ACI Service Graph with Symmetric PBR.
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Suggested Answer: D 🗳️
by Mr_Certifiable at May 25, 2023, 3:09 p.m.

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marceaubueno
10 months ago
D. Because L4-L7 devices perform connection tracking (stateful firewall), they must see both directions of a flow. Therefore, you need to make sure that incoming and return traffic are redirected to the same PBR node.
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S_1292_A
1 year, 4 months ago
Selected Answer: D
D is correct
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Mr_Certifiable
1 year, 5 months ago
One of the main features of the service graph is Policy-Based Redirect (PBR). With PBR, the Cisco ACI fabric can redirect traffic between security zones to L4-L7 devices, such as a firewall, Intrusion-Prevention System (IPS), or load balancer, without the need for the L4-L7 device to be the default gateway for the servers or the need to perform traditional networking configuration such as Virtual Routing and Forwarding (VRF) sandwiching or VLAN stitching https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/white-paper-c11-739971.html
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