Re: Bootproblem CAT 6509 SUP720B

slemberg · ‎06-01-2005

Good morning,

I've got a boot issue with my Catalysts 6509, SUP720B.

After powering up, the switches enter ROMMON :

Autoboot: failed, BOOT string is empty

rommon 1 > set

PS1=rommon ! >

LOG_PREFIX_VERSION=1

SLOTCACHE=cards;

RET_2_RTS=13:01:46 UTC Fri May 27 2005

?=0

BSI=0

RET_2_RCALTS=

ACL_DENY=0

PF_REDUN_CRASH_COUNT=0

BOOT=

OK, the switch is right, the bootstring is empty. So I add the necessary information :

rommon 2 > BOOT=bootflash:

rommon 3 > sync

rommon 4 > set

PS1=rommon ! >

LOG_PREFIX_VERSION=1

SLOTCACHE=cards;

RET_2_RTS=13:01:46 UTC Fri May 27 2005

BSI=0

RET_2_RCALTS=

ACL_DENY=0

PF_REDUN_CRASH_COUNT=0

BOOT=bootflash:

?=0

rommon 5 > i

This time the switch loads its image and works fine. Then I power down the switch and powe up : it works fine. I power down and power up : it works fine.

Then I power down and power up => Oooops, following happens :

System Bootstrap, Version 8.1(3)

Cat6k-Sup720/SP processor with 524288 Kbytes of main memory

Autoboot: failed, BOOT string is empty

rommon 1 >

Why does the switch forget this setting sporadically ? Please help me !

Regards

Sascha

amit-singh · ‎06-02-2005

Hi Sascha,

Please check the following " Autoboot: failed, BOOT string is empty " and

rommon 2 > BOOT=bootflash:,

The switch tried to autoboot and was looking for the bootstring and as it was empty so it went down.

Please specify the correct boot path and I hope it will clear out the problem. use following command

boot system flash bootflash:

If you are in rommon use the following :

BOOT=bootflash:

sync

reset.

HTH,

-amit singh

slemberg · ‎06-02-2005

Hi Amit,

please read the issue again. I already did so. But the switch forgets the boot variable sometimes. This is my problem.

regards

Sascha

amit-singh · ‎06-02-2005

Sorry for the confusion, I thought that you didnt mention the filename after the bootflash:.

Could you please paste the show version from the switch.

regards,

-amit singh

glen.grant · ‎06-02-2005

Make sure config register is 0x2102 . The boot statement should read "boot system flash sup-bootflash: . Write memory . Also if you have a card in disk0: make sure the image is on the disk and add a 2nd boot statement pointing to disk0: .

slemberg · ‎06-02-2005

Good evening,

thanks for your answer.

The boot system command is part of my configuration. But the rommon's variables are processed up a long time before the startup config takes over, isn't it? I wonder, why rommon looses the Boot variable. NVRAM works fine and it is not affected by the known Cisco bug, it got a much higher serial number.

So if anybody can help me, please post it.

regards

Sascha

Prashanth Krishnappa · ‎06-02-2005

The bootvaraible configuration from NVRAM gets written to ROMMON. So can you boot up the switch and paste the bootvariable, config-register setting and the contents of bootflash?

sameerkhurana · ‎06-02-2005

Hi Sasha,

I faced the same problem on my 6509 yesterday and luckily I had saved the image on the disk0 so if you have also done that then copy from the disk0 to the sup-bootflash... command is "rommon 1 > boot disk0:[file name]". Hope it helps!

Here is the doc which I refered which might help you as well... http://www.ciscopress.com/articles/article.asp?p=102093&seqNum=5&rl=1

All the Best!

Regards,

Sameer