Traffic from a county VPC to a remote VPC fails even though a transit gateway attachment exists. Traceroutes show packets never leave the local subnet toward the transit hop. What is most likely missing?
Select an answer to reveal the explanation.
Short Explanation
The transit bridge can be standing there, but if the local route table never points at it, traffic stays on the driveway. Add a route for the remote CIDR that targets the transit attachment.
Full Explanation
Attachments alone do not forward traffic; route tables must send destination prefixes to the transit gateway or similar attachment as the next hop. Missing routes leave packets without a path to the remote VPC. Instance size of the managed transit service, public DNS names, and disabling encryption do not substitute for correct routing.