2V0-41.24 Question 144
Select 2An organization has deployed VMware NSX to manage its networking infrastructure. The network is designed with multiple tiers: a web tier, an application tier, and a database tier. When a packet is sent from a web server in the web tier to a database server in the database tier, how does NSX handle the multitier routing process?
- A
The packet is routed locally within the same Tier-0 gateway if all tiers are in the same logical router instance.
- B
The packet is routed from the web tier's Segment to the application tier's Segment via the Tier-1 gateway and then to the database tier via the same Tier-1 gateway.
- C
East-west traffic between the tiers is processed by the Tier-0 gateway, which performs inter-segment routing.
- D
If the tiers are connected to different Tier-1 gateways, the packet will traverse through the Tier-0 gateway to route between the Tier-1 gateways.
- E
North-south traffic between the tiers requires the use of an external physical router configured outside the NSX environment.
Show answer and explanation
Correct answers: B, D
Explanation
In a multitier routing setup within NSX, east-west traffic between segments in the same Tier-1 gateway is handled locally by the Tier-1 gateway itself. However, if the tiers use different Tier-1 gateways, the traffic needs to traverse the Tier-0 gateway to facilitate inter-Tier-1 routing. This process ensures efficient routing within virtualized environments, avoiding unnecessary reliance on external physical routers.
- A. Incorrect.
Incorrect: Tier-0 gateways are typically used for north-south routing (traffic to and from external networks), not for local east-west traffic within segments of the same logical router instance.
- B. Correct.
Correct: If all tiers are connected to the same Tier-1 gateway, routing between segments happens within the Tier-1 gateway without involving the Tier-0 gateway.
- C. Incorrect.
Incorrect: East-west traffic between tiers does not require the Tier-0 gateway unless the tiers are connected to different Tier-1 gateways.
- D. Correct.
Correct: When different Tier-1 gateways are used for the tiers, the packet must traverse through the Tier-0 gateway to facilitate routing between the Tier-1 gateways.
- E. Incorrect.
Incorrect: North-south routing might involve an external physical router, but east-west traffic between tiers within the NSX environment does not require external routing.