Redlink (also known as Link Server) is the mechanism used by LPCXpresso to provide a debug connection down to a target MCU. It provides the means to connect to single MCUs or to multiple CPUs within the same MCU via a single debug probe.
Redlink consists of a number of layers which you may see referenced in various places within LPCXpresso when making debug connections. These include:
The debug driver utility that acts as the target aware layer underneath the debugger.
redlink server or link server
Server application running on the host computer that allows multiple connections through the debug probe down to single target MCU.
Note: From LPCXpresso IDE v8.1 Redlink/Linkserver is also the primary scheme used for connection to the LPC-Link and Red Probe+ debug probes.
Note that we have no plans to support debugging of ARM7/9 based parts with any 'redlink' connections (including CMSIS-DAP). To debug such parts, you will need to continue to use Red Probe+ or LPC-Link1 and connect via compatable debug drivers. LPCXpresso IDE will automatically select the correct mechinsm for such parts.