Информационное Руководство для Cisco Cisco IOS Software Release 12.0(2a)T1
Speed 9600 bits per second
8 databits
0 parity bits
1 stop bit
No Flow Control
Note: If you receive any garbage characters in the hyperterminal session, this means that you have not
set the hyperterminal properties correctly, or the configuration register of the router is set to a
non−standard value for which the console connection speed is higher than 9600 bps. Check the value
of the configuration register using the show version command (shown on the last line) and ensure it is
set to 0x2102 or 0x102. It is necessary to reload the router to take this change into consideration.
Once you are sure the console speed is set to 9600 bps on the router side, you should check that the
hyperterminal properties are set as indicated above. For more information on setting the hyperterminal
properties, refer to Applying Correct Terminal Emulator Settings for Console Connections.
set the hyperterminal properties correctly, or the configuration register of the router is set to a
non−standard value for which the console connection speed is higher than 9600 bps. Check the value
of the configuration register using the show version command (shown on the last line) and ensure it is
set to 0x2102 or 0x102. It is necessary to reload the router to take this change into consideration.
Once you are sure the console speed is set to 9600 bps on the router side, you should check that the
hyperterminal properties are set as indicated above. For more information on setting the hyperterminal
properties, refer to Applying Correct Terminal Emulator Settings for Console Connections.
Booting ProblemsOnce you are connected to the console port of the router, you might notice that
the router is either in ROMmon or Boot mode. These two modes are used for recovery and/or
diagnostic procedures. If you do not see the usual router prompt, use these recommendations in order
to continue with the upgrade procedure installation.
the router is either in ROMmon or Boot mode. These two modes are used for recovery and/or
diagnostic procedures. If you do not see the usual router prompt, use these recommendations in order
to continue with the upgrade procedure installation.
Router boots in rommon mode, and this message appears when you issue the dir flash:
command:
command:
rommon 1 > dir flash:
device does not contain a valid magic number
dir: cannot open device "flash:"
rommon 2 >
When you see this error message, it means the Flash is empty or the filesystem is corrupted.
Refer to Xmodem Console Download Procedure using ROMmon for information on how to
troubleshoot this problem.
Refer to Xmodem Console Download Procedure using ROMmon for information on how to
troubleshoot this problem.
♦
Router boots in boot mode, with these messages on the console:
router(boot)>
device does not contain a valid magic number
boot: cannot open "flash:"
boot: cannot determine first file name on device "flash:"
When you receive these error messages on the console output, it means that the Flash is
empty or the file system is corrupted. Copy a valid image on the Flash by completing the
procedures provided in this document.
empty or the file system is corrupted. Copy a valid image on the Flash by completing the
procedures provided in this document.
♦
Configure the router or access server to boot into Rxboot mode.
On these platforms, the Cisco IOS software image actually runs directly from the Flash memory.
Therefore, you cannot copy the Cisco IOS software image from the TFTP server to the Flash if you
are in user privileged EXEC mode (router#). You can see from this output that the Flash memory is
read only in user priviledged EXEC mode.
Therefore, you cannot copy the Cisco IOS software image from the TFTP server to the Flash if you
are in user privileged EXEC mode (router#). You can see from this output that the Flash memory is
read only in user priviledged EXEC mode.
Router#show flash:
PCMCIA flash directory:
File Length Name/status
1 9615124 c1600−sy−l.122−7b.bin
[9615188 bytes used, 7162024 available, 16777212 total]
16384K bytes of processor board PCMCIA flash (Read ONLY)
3.