2V0-41.24 Question 450
Single answerA network administrator is troubleshooting a connectivity issue between two VMs in different subnets within an NSX-T Data Center environment. The administrator notices that the VMs are connected to different Tier-1 gateways, which are in turn connected to the same Tier-0 gateway. Upon further investigation, the administrator finds that the Tier-0 gateway is advertising routes to the physical router, but the Tier-1 gateways are not exchanging routes with each other. What is the most likely cause of this issue?
- A
The Tier-1 gateways do not have route redistribution configured.
- B
The Tier-0 gateway is not configured in Active-Active high availability mode.
- C
The Edge Transport Nodes are not part of the same Edge Cluster.
- D
The physical router is not configured to accept routes from the Tier-0 gateway.
Show answer and explanation
Correct answer: A
Explanation
The issue arises because the Tier-1 gateways are not configured to redistribute their routes to the Tier-0 gateway, which is required for communication between subnets managed by different Tier-1 gateways. Configuring route redistribution on the Tier-1 gateways ensures that their routes are advertised to the Tier-0 gateway and made available to other Tier-1 gateways, resolving the connectivity issue.
- A. Correct.
Route redistribution must be configured on the Tier-1 gateways to allow them to exchange routes with each other through the Tier-0 gateway. Without this configuration, the connectivity issue between the VMs will persist.
- B. Incorrect.
The Tier-0 gateway's high availability mode (Active-Active or Active-Standby) does not directly influence the exchange of routes between Tier-1 gateways.
- C. Incorrect.
The Edge Transport Nodes being part of the same Edge Cluster is necessary for high availability and other features, but it does not affect route exchange between Tier-1 gateways.
- D. Incorrect.
If the physical router were not accepting routes from the Tier-0 gateway, external connectivity would be affected, but it would not prevent communication between VMs in different subnets within the NSX environment.