Cisco 7000 Series Hardware Installation And Maintenance Manual page 173

the RP.) The system uses the default filename for netbooting. However, if the configuration file
contains any boot instructions, the system uses those boot instructions instead of the filename it
computed from the jumper settings.
Table 5-1 Default Boot Filenames—Boot Field Jumpers
Action/Filename Bit 3
bootstrap mode 0
ROM software 0
cisco2-rp1 0
cisco3-rp1 0
cisco4-rp1 0
cisco5-rp1 0
cisco6-rp1 0
cisco7-rp1 0
cisco10-rp1 1
cisco11-rp1 1
cisco12-rp1 1
cisco13-rp1 1
cisco14-rp1 1
cisco15-rp1 1
cisco16-rp1 1
cisco17-rp1 1
The four bits after the boot field (bits 4 through 7) in the configuration register are not used
Note
and must be left cleared (0).
Bit 8 in the configuration register controls the console Break key. Setting bit 8 to 1 (the factory
default) causes the processor to ignore the console Break key. Clearing bit 8 to 0 causes the processor
to interpret Break as a command to force the system into the bootstrap monitor, thereby suspending
normal operation.
Bit 9 in the configuration register is not used.
Bit 10 in the configuration register controls the host portion of the Internet broadcast address. Setting
bit 10 causes the processor to use all zeros; clearing bit 10 (the factory default) causes the processor
to use all ones. Bit 10 interacts with bit 14, which controls the network and subnet portions of the
broadcast address. Table 5-2 shows the combined effect of bits 10 and 14.
Table 5-2 Configuration Register Settings for Broadcast Address Destination
Bit 14 Bit 10 Address (<net><host>)
out out <ones><ones>
out in <zeros><zeros>
Bit 2 Bit 1 Bit 0
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
Installing and Configuring Processor Modules
Maintenance 5-15