System information
Troubleshooting Hardware and Booting Problems 3-49
Booting: Timeouts and Out-of-Order Packets Prevent Netbooting
Table 3-14 Booting: Router Cannot Netboot from Another Router
Booting: Timeouts and Out-of-Order Packets Prevent Netbooting
Symptom: Timeouts or out-of-order packets prevent successful netbooting. The number of timeouts
and out-of-order packets indicated on the router’s console display might vary.
The following example shows a netbooting session that contains excessive timeouts and out-of-order
packets:
Booting gs3-bfx from 131.108.1.123: !O.O!.O..O!!!OOO.O!!.O.O.....
The client router might boot in this situation. However, when excessive timeouts and out-of-order
packets occur, there is probably a network problem, and netbooting (as well as network service
availability) might be inconsistent.
Possible Problem Solution
Missing or incorrect
tftp-server global
configuration command
Step 1 Use the show running-config privileged exec command to determine whether
the tftp-server system global configuration command is missing or
incorrectly specified.
Step 2 Add or modify the tftp-server system global configuration command as
necessary on the router acting as the TFTP server. Specify the name of a file in
Flash memory.
Incomplete image in Flash
memory
Use the show flash exec command to determine whether the image is incomplete. This
display might show that the image is deleted and indicate the reason.
Following is an example of show flash output indicating that the image is deleted:
babar# show flash
2048K bytes of flash memory sized on embedded flash.
File name/status
0 xx-k.914-0.16
1 xx3-confg
2 xx-k.91-4.2 [deleted] [invalid cksum]
[0/2097152 bytes free/total]
Incorrect image in Flash
memory
Step 1 A “wrong system software” message is displayed when a router attempts to
boot an incorrect image. In this case, the router is being booted from the ROM
monitor.
Following is an example of the ROM monitor output after an attempt to boot
an incorrect image:
> b gs3-klingon 131.108.9.40
Booting gs3-klingon from 131.108.9.40:!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!O!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![OK -
2056792/3394950 bytes]
F3: 2011628+45132+192972 at 0x1000
Wrong system software for this hardware
Step 2
Obtain the correct image. If necessary, contact your technical support
representative to determine which image is correct.
Step 3 When you identify the correct image, use the copy tftp flash privileged exec
command to retrieve the image.