# Why does my NDI connection stay active once the source is offline? NDI as a protocol is designed for easy and seamless connections. However, as NDI is also designed to be used across a wide variety of user-implemented networks, the video stream may go offline for to a number of reasons i.e. a pulled cord, lost power, user-caused 'stop' on the device, etc. When a connection is suddenly lost, NDI will handle that as being 'improperly closed'. The receiving end will attempt to keep the sending NDI IP and port number open and available for a number of minutes in case the issue is resolved, so the user won't need to re-discover the NDI source. By default, it's a 75 minute timeout. If there's been no re-advertisement to renew the time to live, it'll be removed after 75 minutes. Due to this, NDI is designed to hold onto the last frame that was sent as a still within the receiver's buffer and no other image or video signal can use that same IP and Port. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.ndi.video/all/faq/ndi-tools/why-does-my-ndi-connection-stay-active-once-the-source-is-offline.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.