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3.2.2 Checking the Master XSCF


3.2.2 Checking the Master XSCF
For the SPARC M12-1/M12-2/M10-1/M10-4, and the SPARC M12-2S/M10-4S in a single-unit configuration, the XSCF of that chassis is the master XSCF. For the SPARC M12-2S or the SPARC M10-4S in a building block configuration, only the master XSCF or standby XSCF is accessible to users. Configure the XSCF from the master XSCF. In principle, the master XSCF in a building block configuration is the XSCF mounted in the SPARC M12/M10 whose ID (BB-ID) is 0 or 1, or in the chassis of crossbar box 80 or 81. The standby XSCF is also the XSCF mounted in chassis with the same numbers.

If the master XSCF and the standby XSCF are switched while the system is in operation, the master XSCF changes from the unit in the chassis with a BB-ID of 0 to the unit in the ID 1 chassis. Likewise, the standby XSCF changes from the unit in the chassis with a BB-ID of 1 to the unit in the ID 0 chassis.

The master XSCF and standby XSCF in a system with multiple XSCFs has the following component mounting numbers:
  1. SPARC M12-2S or SPARC M10-4S system (no crossbar box)
    - Master XSCF: BB#00; Standby XSCF: BB#01

    Alternatively,
    - Master XSCF: BB#01; Standby XSCF: BB#00
  2. SPARC M12-2S or SPARC M10-4S system (with crossbar boxes)
    - Master XSCF: XBBOX#80; Standby XSCF: XBBOX#81

    Alternatively,
    - Master XSCF: XBBOX#81; Standby XSCF: XBBOX#80
The method of checking and connecting the master XSCF in a system with multiple XSCFs is as follows.
  1. Checking the MASTER LED and establishing a serial connection
    With power supplied to the SPARC M12-2S or SPARC M10-4S or crossbar boxes, the completion of master XSCF initialization turns on the MASTER LED on the rear panel of the XSCF unit. By connecting a PC to the serial port on the same panel, you can log in to the master XSCF. 
  1. Specifying the takeover IP address or master XSCF IP address to establish a connection
    The master XSCF and standby XSCF have the XSCF LAN#0 and LAN#1 ports, respectively. LAN#0 and LAN#1 are duplicated as they are connected to each other through the same subnet.
    To connect to the master XSCF, specify the LAN#0 takeover IP address or LAN#1 takeover IP address. Even when the master and standby XSCFs have been switched, you can connect to the master XSCF by specifying the same takeover IP address.
    An alternative method of connecting to the master XSCF is to specify the master XSCF LAN#0 or LAN#1 IP address. This method of connecting can be used when the system has only one XSCF, or when, due to maintenance operations, the standby XSCF cannot be accessed.
    After connecting and successfully logging in to the master XSCF at the specified IP address, execute the showhardconf command. You can check which chassis of the SPARC M12-2S, SPARC M10-4S, or crossbar box has the master XSCF.
The following example shows that BB-ID 0 is the master XSCF.
XSCF> showhardconf
SPARC M10-4S;
     + Serial: 2081208013; Operator_Panel_Switch:Locked;

:
     BB#00 Status:Normal; Role:Master Ver: 0101h; Serial:7867000297;

         + FRU-Part-Number: CA20393-B50X A2 ;

:
     BB#01 Status:Normal; Role:Standby Ver:0101h; Serial:7867000297;

         + FRU-Part-Number: CA20393-B50X A2 ;

:
The following example shows that crossbar box 80 is the master XSCF.
XSCF> showhardconf
SPARC M10-4S;
     + Serial:PAxxxxxxxx; Operator_Panel_Switch:Locked;
:
     XBBOX#80 Status:Normal; Role:Master Ver:0101h; Serial:7867000297;
          + FRU-Part-Number:CA20393-B50X A2 ;
:
     XBBOX#81 Status:Normal; Role:Standby Ver:0101h; Serial:7867000297;
          + FRU-Part-Number:CA20393-B50X A2 ;
:
Note - The settings made on the master XSCF are reflected by the standby XSCF.