FlexWan module

Unanswered Question

I have noticed the following on a cisco 6509E

Switch02#dir ?

/all List all files

/recursive List files recursively

all-filesystems List files on all filesystems

bootflash: Directory or file name

const_nvram: Directory or file name

cwan1/0-disk0: Directory or file name

cwan1/1-disk0: Directory or file name

disk0: Directory or file name

disk1: Directory or file name

null: Directory or file name

nvram: Directory or file name

sup-bootflash: Directory or file name

sup-image: Directory or file name

sup-microcode: Directory or file name

system: Directory or file name

Switch02#dir cwan1/0-disk0:

Directory of cwan1/0-disk0:/

1 -rw- 56829 Apr 16 2008 17:06:10 +00:00 running-config

128167936 bytes total (128110592 bytes free)

Switch02#dir cwan1/1-disk0:

Directory of cwan1/1-disk0:/

No files in directory

128167936 bytes total (128167936 bytes free)

My doubts are

1. whether these cwan1/0-disk0: and cwan1/1-disk0: are builtin

flash modules on Flexwan module or memory modules (SDRAM)?

2. if so can i upload my IOS in those modules becoz, my current flash size

will not support my new IOS

3. If #2 is okay, is it a best practise?

Thanks/ Sony

I have this problem too.
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Giuseppe Larosa Wed, 10/14/2009 - 22:34

Hello Sony,

you haven't specified the type of supervisor you have, I guess you have a sup 720.

if so you can get a compact flash to put on the supervisor.


For sup2 you can get a PCMCIA external card.

Also the internal bootflash can be upgraded as explained here: (for sup720)


if those filesystems are on the flexwan module it is probably not possible to boot from them.

It depends from the boot order: if an IOS image needs to be started before linecards are initialized the flexwan flash can be not accessible at boot time.

Even if it would be possible is not recommended.

Hope to help



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