2V0-41.24 Question 145
Single answerAn organization has deployed NSX-T Data Center with multiple Tier-1 and Tier-0 routers. A virtual machine in a web tier (connected to a Tier-1 router) needs to communicate with a database tier virtual machine connected to another Tier-1 router. How does the datapath flow in this multitier routing scenario?
- A
The traffic is routed locally within the Tier-1 routers without involving the Tier-0 router.
- B
The traffic is sent from the source Tier-1 router to the Tier-0 router and then forwarded to the destination Tier-1 router.
- C
The traffic is sent from the source Tier-1 router directly to the destination Tier-1 router.
- D
The traffic is encapsulated and sent to the physical network before being routed back to the destination Tier-1 router.
Show answer and explanation
Correct answer: B
Explanation
In NSX-T Data Center, multitier routing involves Tier-1 and Tier-0 routers. Tier-1 routers are responsible for routing traffic within their connected segments and forwarding traffic to the Tier-0 router for inter-tier communication. When traffic flows between two Tier-1 routers, it must traverse the Tier-0 router, which performs the necessary routing to forward the traffic to the destination Tier-1 router. This design ensures scalability and maintains logical separation across tiers.
- A. Incorrect.
Incorrect. Tier-1 routers cannot directly route traffic between themselves without involving a Tier-0 router in a multitier routing setup.
- B. Correct.
Correct. In NSX-T multitier routing, traffic between two Tier-1 routers must traverse the Tier-0 router, which acts as the central routing entity.
- C. Incorrect.
Incorrect. Tier-1 routers are not designed to directly communicate with each other; they rely on the Tier-0 router for cross-Tier-1 traffic.
- D. Incorrect.
Incorrect. Traffic between Tier-1 routers does not need to leave the NSX-T environment or be sent to the physical network for routing.