name : update-flow-source.rst **To update the source of an existing flow** The following ``update-flow-source`` example updates the source of an existing flow. :: aws mediaconnect update-flow-source \ --flow-arn arn:aws:mediaconnect:us-east-1:111122223333:flow:1-23aBC45dEF67hiJ8-12AbC34DE5fG:AwardsShow \ --source-arn arn:aws:mediaconnect:us-east-1:111122223333:source:3-4aBC56dEF78hiJ90-4de5fG6Hi78Jk:ShowSource \ --description 'Friday night show' \ --ingest-port 3344 \ --protocol rtp-fec \ --whitelist-cidr 10.24.34.0/23 Output:: { "FlowArn": "arn:aws:mediaconnect:us-east-1:111122223333:flow:1-23aBC45dEF67hiJ8-12AbC34DE5fG:AwardsShow", "Source": { "IngestIp": "34.210.136.56", "WhitelistCidr": "10.24.34.0/23", "Transport": { "Protocol": "rtp-fec" }, "IngestPort": 3344, "Name": "ShowSource", "Description": "Friday night show", "SourceArn": "arn:aws:mediaconnect:us-east-1:111122223333:source:3-4aBC56dEF78hiJ90-4de5fG6Hi78Jk:ShowSource" } } For more information, see `Updating the Source of a Flow <https://docs.aws.amazon.com/mediaconnect/latest/ug/source-update.html>`__ in the *AWS Elemental MediaConnect User Guide*.