Technical References

Network Registrar
CLI Reference Guide
Using the nrcmd Program in Scripts
You can use the nrcmd command to interactively configure and control a Cisco Network Registrar
cluster, or you can use it as a programming interface for another program or script.
Connecting to Network Registrar
When you use the nrcmd command ,you connect to a Network Registrar cluster to read and write
configuration data, read state data, and perform control operations.
A Network Registrar cluster consists of:
● The data manager, the MCD server, which controls access to persistent datastores that contain
configuration and state information for the DNS, DHCP, and TFTP servers.
● The server agent, AIC Server Agent, which starts and stops the protocol servers, and provides
a standard control interface to them.
● The DNS, DHCP, and TFTP protocol servers.
Performing Authentication
When you log in to a cluster you are authenticated with a name and a password. The authentication
protocol uses one-way hashes so that a password does not travel across the wire. In interactive mode,
the nrcmd command prompts for a valid username and password. You can also provide the username
or password on the command line, in the environment, or in the Windows Registry. (On Solaris, the
Windows Registry is emulated by files in the product configuration directories.)
Because you may not want to embed the administrator password in a command script, the
environment variables and registry entries provide alternate locations with different visibility levels. The
environment variables AIC_CLUSTER, AIC_NAME, and AIC_PASSWORD specify the cluster,
administrator name and administrator password values, respectively. These are similar to the same
registry keys in the directory HKEY_CURRENT_USER\Software\American Internet\Network Registrar
\2.0.
Choosing Scripting Techniques