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W Commands
The commands in this chapter apply to the Cisco MDS 9000 Family of multilayer directors and fabric switches. All commands are shown here in alphabetical order regardless of command mode. Please see the Command Mode section to determine the appropriate mode for each command. For more information, see the Cisco MDS 9000 Family Configuration Guide.
write erase
To clear a startup configuration, enter the write erase command from the EXEC mode prompt.
write erase [boot | debug]
Syntax Description
Defaults
None.
Command Modes
EXEC mode.
Command History
This command was introduced in Cisco MDS SAN-OS Release 1.0(2).
Usage Guidelines
Once this command is issued, the switch's startup configuration reverts to factory defaults. The running configuration is not affected. The write erase command erases the entire startup configuration with the exception of any configuration that affects the loader functionality.
The write erase boot command only erases the configuration that affects the loader functionality. The loader functionaility configuration includes the boot variables and the mgmt0 IP configuration information (IP address, netmask and default gateway).
Examples
The following example clears the existing startup configuration completely.
switch# write eraseThe following example clears the loader functionality configuration.
switch# write erase bootThis command will erase the boot variables and the ip configuration of interface mgmt 0wwn secondary-mac
To allocate secondary MAC addresses, use the wwn secondary-mac command.
www secondary-mac wwn-id range address-range
Syntax Description
secondary-mac wwn-id
The secondary MAC address with the format hh:hh:hh:hh:hh:hh.
range address-range
The range for the specified WWN (64).
Command Modes
EXEC
Command History
This command was introduced in Cisco MDS SAN-OS Release 1.0(2).
Usage Guidelines
This command cannot be undone.
Changes to the worldwide names are only performed as required. They should not be changed on a daily basis. These changes should be made by an administrator or individual who is completely familiar with switch operations.
For more information, refer to the Cisco MDS 9000 Family Configuration Guide.
Examples
switch(config)# wwnm secondary-mac 00:99:55:77:55:55 range 64This command CANNOT be undone.Please enter the BASE MAC ADDRESS again: 00:99:55:77:55:55Please enter the mac address RANGE again: 64From now on WWN allocation would be based on new MACs.Are you sure? (yes/no) noYou entered: no. Secondary MAC NOT programmed
