151Available commands are listed below.S Enable/disable the Ring Redundant Protocol function.Press "S." The command prompt changes to "Enable or Disable RRP status (E/D)>." Press "E"to enable the function. Press "D" to disable it.C Create a new domain.Press "C." The screen changes to "RRP Domain Creation Menu." For details, refer to the nextsection (4.6.10.a).D Delete a domain.Press "D." The command prompt changes to "Enter RRP Domain Name >." Enter the domainname you wish to delete.M Modify the domain settings.Press "M." The command prompt changes to "Enter RRP Domain Name >." Enter the domainname for which you wish to modify the settings. Then, the screen changes to "RRP DomainModification Menu." For details, refer to the next section (4.6.10.b).H Display the domain information.Press "H." The command prompt changes to "Enter RRP Domain Name >." Enter the domainname whose information you wish to view. Then, the screen changes to "RRP Domain infor-mation Menu." For details, refer to the next section (4.6.10.c).Q Return to the parent menu.Note: The Ring Redundant Protocol function and the Internet Mansion mode can-not be used simultaneously.Note: Disable the Loop detection and blocking function for a port configuring thering protocol. For detailed loop detection and blocking function settings, referto 4.6.11.Node Type Displays the node role.Master Indicates that the Switching Hub controls the ring operation.Each domain has only one master node.Transit Indicates that the Switching Hub is not a master node.