**To describe linked EC2-Classic instances** This example lists all of your linked EC2-Classic instances. Command:: aws ec2 describe-classic-link-instances Output:: { "Instances": [ { "InstanceId": "i-1234567890abcdef0", "VpcId": "vpc-88888888", "Groups": [ { "GroupId": "sg-11122233" } ], "Tags": [ { "Value": "ClassicInstance", "Key": "Name" } ] }, { "InstanceId": "i-0598c7d356eba48d7", "VpcId": "vpc-12312312", "Groups": [ { "GroupId": "sg-aabbccdd" } ], "Tags": [ { "Value": "ClassicInstance2", "Key": "Name" } ] } ] } This example lists all of your linked EC2-Classic instances, and filters the response to include only instances that are linked to VPC vpc-88888888. Command:: aws ec2 describe-classic-link-instances --filter "Name=vpc-id,Values=vpc-88888888" Output:: { "Instances": [ { "InstanceId": "i-1234567890abcdef0", "VpcId": "vpc-88888888", "Groups": [ { "GroupId": "sg-11122233" } ], "Tags": [ { "Value": "ClassicInstance", "Key": "Name" } ] } ] }