Prefix the host name (and, if required, the server name) to indicate which host (or server name) you are issuing the command to. Examples:
Show the XML configuration from the host master:
/host=master:read-config-as-xmlShow the IP address of the public interface for the
server-oneserver running on the hostmaster:/host=master/server=server-one/interface=public:read-attribute(name=resolved-address)