**To modify an IPAM pool** The following ``modify-ipam-pool`` example modifies an IPAM pool. (Linux):: aws ec2 modify-ipam-pool \ --ipam-pool-id ipam-pool-0533048da7d823723 \ --add-allocation-resource-tags "Key=Owner,Value=Build Team" \ --clear-allocation-default-netmask-length \ --allocation-min-netmask-length 14 (Windows):: aws ec2 modify-ipam-pool ^ --ipam-pool-id ipam-pool-0533048da7d823723 ^ --add-allocation-resource-tags "Key=Owner,Value=Build Team" ^ --clear-allocation-default-netmask-length ^ --allocation-min-netmask-length 14 Output:: { "IpamPool": { "OwnerId": "123456789012", "IpamPoolId": "ipam-pool-0533048da7d823723", "IpamPoolArn": "arn:aws:ec2::123456789012:ipam-pool/ipam-pool-0533048da7d823723", "IpamScopeArn": "arn:aws:ec2::123456789012:ipam-scope/ipam-scope-02fc38cd4c48e7d38", "IpamScopeType": "private", "IpamArn": "arn:aws:ec2::123456789012:ipam/ipam-08440e7a3acde3908", "IpamRegion": "us-east-1", "Locale": "None", "PoolDepth": 1, "State": "modify-complete", "AutoImport": true, "AddressFamily": "ipv4", "AllocationMinNetmaskLength": 14, "AllocationMaxNetmaskLength": 26, "AllocationResourceTags": [ { "Key": "Environment", "Value": "Preprod" }, { "Key": "Owner", "Value": "Build Team" } ] } } For more information, see `Edit a pool <https://docs.aws.amazon.com/vpc/latest/ipam/mod-pool-ipam.html>`__ in the *Amazon VPC IPAM User Guide*.