AWS - VPC Fundamentals
Which AWS component must be modified to enable routing of traffic between two VPCs connected via a peering connection?
Which AWS component must be modified to enable routing of traffic between two VPCs connected via a peering connection?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify the routing mechanism
Traffic between peered VPCs is routed via route tables, not security groups or NACLs.Step 2: Update route tables
To allow communication, add routes in each VPC's route table pointing to the peered VPC's CIDR block via the peering connection.Final Answer:
Route tables associated with the subnets in each VPC -> Option DQuick Check:
Routing requires route table updates [OK]
Quick Trick: Update route tables to route traffic via peering connection [OK]
Common Mistakes:
MISTAKES- Assuming security groups alone allow cross-VPC traffic
- Forgetting to add routes in both VPCs
- Trying to use Internet Gateway for peered VPC traffic
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