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What is the VPC subnet route priority when two targets have the same default 0.0.0.0/0 route as the destination?

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If a public subnet has an attached route table with the following routes:

DestinationTarget
0.0.0.0/0nat-gateway-id
0.0.0.0/0igw-gateway-id

Which entry will take priority?. Is order considered in such case?

asked 2 years ago125 views
1 Answer
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Accepted Answer

In a VPC route table, you cannot have two targets with static routes for the same destination network. For example, the subnet route table already has a default route 0.0.0.0/0 pointing to <igw-gateway-id> and if you try to add another default route 0.0.0.0/0 pointing to <nat-gateway-id> in the same route table, will result in the error message: "The route identified by 0.0.0.0/0 already exists."

answered 2 years ago

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