22 Chapter 2
Configuration management
Teststation
Teststation
The teststation is used for configuring, monitoring, testing, and error
logging. It is not required for normal operation of a node.
The teststation communicates with the JTAG interface in the nodes. The
JTAG port remains idle if no teststation is connected to it. It receives
communications packets, interprets requests, and generates responses to
them. The hardware on the node can read board information, system
configuration, device revisions, and environmental conditions. When a
teststation is present, all of these parameters are read or written by the
configuration management tools.
The configuration management daemon, ccmd, initiates communications
between the teststation and the nodes.
